Patent Publication Number: US-10309618-B2

Title: Illuminating device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application is based upon and claims the benefit of priority of Japanese Patent Application No. 2016-017398, filed on Feb. 1, 2016, the entire contents of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The present disclosure relates to illuminating devices. 
     BACKGROUND ART 
     In the past, there has been proposed an illuminating device suitable including a light source including light emitting diodes (LEDs) (e.g., see JP 2005-259653 A (hereinafter referred to as “Document 1”)). The illuminating device disclosed in Document 1 includes a casing with a box shape, a light source, a collimator lens part, and a fly eye lens, for example. The casing includes a top plate having a circular window hole, a pair of side plates protruding upright from opposite ends of the top plates, and a bottom plate which interconnects the pair of side plates and is positioned parallel to the top plate. The bottom plates has transmitting holes which have diameters smaller than a diameter of the window hole and are arranged in a matrix manner. The light source includes a circuit board with a rectangular plate shape, and bullet LEDs mounted on the circuit board. Tops of the bullet LEDs are inserted into the transmitting holes of the bottom plate, individually. 
     The illuminating device disclosed in Document 1 is configured to convert rays of light emitted from the light source into collimated rays of light by the collimator lens part and guide the collimated rays of light to the fly eye lens. 
     Recently, surface mounted LEDs and COB (Chip On Board) LEDs are the mainstream of LEDs for illumination. However, in a case where such surface mounted LEDs and COB LEDs are used as a light source, it may be difficult for the configuration disclosed in Document 1 to improve the usage efficiency of light emitted from LEDs and additionally improve the uniformity ratio of illumination light. 
     SUMMARY 
     An object of the present disclosure would be to propose an illuminating device capable of improving the usage efficiency of light emitted from LEDs and additionally improving the uniformity ratio of illumination light. 
     The illuminating device according to one aspect of the present disclosure includes light emitting diodes, a first lens array, a second lens array, and a light control member. The first lens array includes first lenses individually corresponding to the light emitting diodes. The light control member includes light transmission channels individually corresponding to the first lenses and a light blocker surrounding the light transmission channels. The second lens array includes second lenses individually corresponding to the light transmission channels. Each of the first lenses includes a light concentrator for producing concentrated light by concentrating a part of light emitted from a corresponding light emitting diode of the light emitting diodes, and a reflector surrounding the light concentrator to produce reflected light by reflecting another part of the light emitted from the corresponding light emitting diode in a direction across the concentrated light and being configured to output illumination light including the concentrated light and the reflected light. Each of the light transmission channels is for transmitting the illumination light output from a corresponding first lens of the first lenses. The light blocker is for preventing transmission of the illumination light emitted from each of the first lenses. Each of the second lenses is for refracting the illumination light transmitted by a corresponding light transmission channel of the light transmission channels. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The figures depict one or more implementation in accordance with the present teaching, by way of example only, not by way of limitations. In the figures, like reference numerals refer to the same or similar elements. 
         FIG. 1  is an exploded perspective view of an illuminating device according to Embodiment 1 of the present disclosure. 
         FIG. 2  is a front view of the illuminating device of the above. 
         FIG. 3  is a plan view of the illuminating device of the above. 
         FIG. 4  is a left side view of the illuminating device of the above. 
         FIG. 5  is a section of the illuminating device of the above. 
         FIG. 6  is a section of a primary part of the illuminating device of the above. 
         FIG. 7  is a perspective view of a modification of the illuminating device of the above. 
         FIG. 8  is a section of the modification of the illuminating device of the above. 
         FIG. 9A  is a front view of an illuminating fixture including the illuminating device of the above. 
         FIG. 9B  is a side view of the illuminating fixture including the illuminating device of the above. 
         FIG. 10  is a perspective view of an illuminating unit in the above illuminating fixture. 
         FIG. 11  is an exploded perspective view of an illuminating device according to Embodiment 2 of the present disclosure. 
         FIG. 12  is a perspective view of the illuminating device according to Embodiment 2 of the present disclosure. 
         FIG. 13  is a plan view of the illuminating device according to Embodiment 2 of the present disclosure, wherein a top plate thereof is omitted. 
         FIG. 14  is a plan view of the illuminating device according to Embodiment 2 of the present disclosure, wherein the top plate and a handle thereof are omitted. 
     
    
    
     DETAILED DESCRIPTION 
     The following embodiments relate to illuminating devices and particularly to an illuminating device including one or more light emitting diodes (LEDs). Note that, the configurations described in the following embodiments are examples according to the present disclosure. The present disclosure is not limited to the following embodiments, and the following embodiments can be modified in consideration of design or the like as long as they belong to the same technical concept derived from the present disclosure. 
     Embodiment 1 
     As shown in  FIG. 1  to  FIG. 5 , the illuminating device X 1  according to Embodiment 1 includes an LED module  10 , a first lens array  11 , a light control member  12 , and a second lens array  13 . Additionally, the illuminating device X 1  may preferably include a supporting member  14 . Note that, in the following description, unless otherwise noted, the forward, rearward, left, right, upward and downward directions of the illuminating device X 1  correspond to those shown in  FIG. 1 . 
     The LED module  10  includes a printed wiring board  101  with a rectangular plate shape, and LEDs (in the illustrated example, twenty-two LEDs)  100  (see  FIG. 1 ). Note that, the number of LEDs  100  is not limited to  22 . There are circular through holes  1010  formed individually in four corners of the printed wiring board  101 . Note that, a periphery of the through hole  1010  positioned in an upper left corner of the printed wiring board  101  is partially cut out. Each LED  100  includes an LED chip for emitting blue light, a surface-mounted package for accommodating the LED chip, and a resin part  1000  protruding from a surface of the package (see  FIG. 5 ). The resin part  1000  is made of transparent synthetic resin such as silicone resin, and is formed into a hemispherical shape. Additionally, the resin part  1000  contains phosphor for converting blue light into yellow light. Thus, some of rays of blue light emitted from the LED chip are converted into yellow light by the phosphor. Accordingly, each LED  100  mixes blue light and yellow light and therefore emits white light. These twenty-two LEDs  100  are soldered to pads formed on a front face of the printed wiring board  101  and thereby mounted on the front face (hereinafter referred to as “mounting surface”) of the printed wiring board  101 . Further, it is preferable that there be two receptacle connectors  102  mounted on the mounting surface of the printed wiring board  101  (see  FIG. 1 ). These two receptacle connectors  102  are individually and electrically connected to series circuits of eleven LEDs  100  through printed wires (conductors) formed on the mounting surface of the printed wiring board  101 . 
     The first lens array  11  includes first lenses  110  the number of which is equal to the number of LEDs  100  (that is, 22), and a first support  113  (see  FIG. 1 ). The first support  113  supports the first lenses  110 . These twenty-two first lenses  110  each include a light concentrator  111  and a reflector  112  (see  FIG. 5 ). In each of the first lenses  110 , the light concentrator  111  and the reflector  112  are formed integrally. The light concentrator  111  may include preferably a collimator lens. The reflector  112  may preferably be formed into a hollow cylindrical shape so as to surround a light entrance surface  111   a  of the light concentrator  111 . In short, the reflector  112  surrounds a light entrance surface  111   a  of the light concentrator  111 . The reflector  112  may preferably be configured to cause internal total reflection of received light. The first lenses  110  and the first support  113  may be formed integrally of transparent synthetic resin such as acrylic resin. 
     The second lens array  13  includes second lenses  130  the number of which is equal to the number of LEDs  100  (that is, 22), and a second support  131  (see  FIG. 1 ). The second support  131  supports the second lenses  130 . These twenty-two second lenses  130  each may preferably include a plane-convex lens (see  FIG. 3  to  FIG. 5 ). The second lenses  130  and the second support  131  may be formed integrally of transparent synthetic resin such as acrylic resin. 
     The light control member  12  may preferably include at least a first light control member  120  and a second light control member  121  (see  FIG. 1 , and  FIG. 3  to  FIG. 5 ). The first light control member  120  includes a first light blocker  1200  and first light transmission channels  1201  the number of which is equal to the number of first lenses  110  (that is,  22 ). The first light control member  120  may further preferably include first hollow cylindrical parts  1202  the number of which is equal to the number of first light transmission channels  1201  (that is, 22). The first light blocker  1200  may be preferably formed into a flat plate shape of material which does not transmit light emitted from LEDs  100  (e.g., opaque synthetic resin). The first light transmission channels  1201  each may preferably a circular hole penetrating the first light blocker  1200  in a thickness direction of the first light blocker  1200  (see  FIG. 5 ). The first hollow cylindrical parts  1202  may preferably protrude forward from peripheries of the first light transmission channels  1201  of a front face of the first light blocker  1200 . Further, the first hollow cylindrical parts  1202  each may preferably have a circular tube shape, and have its diameter which becomes gradually smaller toward its front end (see  FIG. 5 ). In other words, each of the first hollow cylindrical parts  1202  has a diameter which becomes smaller as a distance from the first light blocker  1200  increases. Moreover, the first light control member  120  may preferably include three first bosses  1203  (see  FIG. 1 ). These three first bosses  1203  each have a hollow circular cylindrical shape, and protrude forward from the front face of the first light blocker  1200 . Note that, the first light blocker  1200 , the first hollow cylindrical parts  1202  and the three first bosses  1203  may be preferably formed integrally of synthetic resin. Further, inner peripheral surfaces of the first light transmission channels  1201  and the first hollow cylindrical parts  1202  may preferably be subjected to surface texturing or provided with fine protrusions and recesses so as to diffuse light. 
     The second light control member  121  includes a second light blocker  1210  and second light transmission channels  1211  the number of which is equal to the number of first light transmission channels  1201  (that is,  22 ). The second light control member  121  may further preferably include second hollow cylindrical parts  1212  the number of which is equal to the number of second light transmission channels  1211  (that is, 22). The second light blocker  1210  may be preferably formed into a flat plate shape of material which does not transmit light emitted from LEDs  100  (e.g., opaque synthetic resin). The second light transmission channels  1211  each may preferably a circular hole penetrating the second light blocker  1210  in a thickness direction of the second light blocker  1210  (see  FIG. 1  and  FIG. 5 ). The second hollow cylindrical parts  1212  may preferably protrude rearward from peripheries of the second light transmission channels  1211  of a rear face of the second light blocker  1210  (see  FIG. 5 ). Further, the second hollow cylindrical parts  1212  each may preferably have a circular tube shape, and have its diameter which becomes gradually smaller toward its rear end (see  FIG. 5 ). In other words, each of the second hollow cylindrical parts  1212  has a diameter which becomes smaller as a distance from the second light blocker  1210  increases. Moreover, the second light control member  121  may preferably include three second bosses  1213  (see  FIG. 1 ). These three second bosses  1213  each have a half hollow circular cylindrical shape, and protrude rearward from the rear face of the second light blocker  1210 . Note that, the second light blocker  1210 , the second hollow cylindrical parts  1212  and the three second bosses  1213  may be preferably formed integrally of synthetic resin. Further, inner peripheral surfaces of the second light transmission channels  1211  and the second hollow cylindrical parts  1212  may preferably be subjected to surface texturing or provided with fine protrusions and recesses so as to diffuse light. 
     The supporting member  14  includes a base part  140  and pillars (in the illustrated example, five pillars)  141  (see  FIG. 1 ). Note that, the base part  140  and the five pillars  141  may be formed as a single die-cast aluminum product. The base part  140  is formed into a rectangular plate shape. The base part  140  includes circular through holes  142  the number of which is equal to the number of first lenses  110  (that is, 22) (see  FIG. 1 ). Further, the base part  140  includes four stepped parts  143  (see  FIG. 1 ). These four stepped parts  143  are formed integrally with four corners of the base part  140  so as to be set back from the base part  140 . Further, the base part  140  includes two bosses. One of the bosses protrudes rearward from an upper left corner of a rear face of the base part  140  and the other protrudes rearward from a rear face of a protrusion piece  145  with a rectangular plate shape. Note that, the protrusion piece  145  protrudes downward from a center of a lower end of the base part  140  in the left and right direction. These two bosses includes bolt insertion holes  144  penetrating therethrough in the forward and rearward direction. The five pillars  141  protrude forward from the four corners of the base part  140  and the almost center of the base part  140 . These five pillars  141  each include at its end (front end) a female screw (screw hole)  1410  (see  FIG. 1 ). 
     As shown in  FIG. 2  to  FIG. 5 , the aforementioned LED module  10 , first lens array  11 , light control member  12  and second lens array  13  are screwed to the supporting member  14 . The LED module  10  is supported on a rear side of the base part  140  of the supporting member  14 . Two bolts  146  are inserted into the two bolt insertion holes  144  of the base part  140  from their front sides. These two bolts  146  are inserted into two holes  1011  provided to the printed wiring board  101 , and are engaged with and tightened to nuts on a rear surface (a non-mounting surface) side of the printed wiring board  101 . Accordingly, the printed wiring board  101  of the LED module  10  is screwed (or bolted) to the base part  140  using two sets of the bolt  146  and the nut (see  FIG. 2 ). Note that, in a front view, each of the LEDs  100  of the LED module  10  is positioned in an almost center of a corresponding one of the through holes  142  of the base part  140 . 
     The first lens array  11  is supported on a front side of the base part  140  of the supporting member  14 . Note that, the first lenses  110  of the first lens array  11  are individually inserted into the through holes  142  of the base part  140  (see  FIG. 5 ). Three screws are inserted into three holes  1130  provided to the first support  113  of the first lens array  11  (see  FIG. 1 ). These three screws are engaged with and tightened to three female screws  1400  (see  FIG. 1 ) provided to the base part  140 . Thus, the first lens array  11  is screwed (or bolted) to the base part  140  using the three screws (see  FIG. 3  to  FIG. 5 ). Note that, in a front view, centers of the first lenses  110  almost overlap with centers of the resin parts  1000  of the LEDs  100 . 
     The first light control member  120  is supported on the base part  140  of the supporting member  14  so as to be in front of the first lens array  11 . Four screws are inserted into four holes provided to the first light blocker  1200  of the first light control member  120 , individually. These four screws are inserted into four holes  1131  provided to the first support  113  of the first lens array  11 , individually. Further, these four screws are engaged with and tightened to four female screws  1401  (see  FIG. 1 ) provided to the base part  140 , individually. Accordingly, the first light control member  120  is screwed or bolted to the base part  140  using the four screws with the first lens array  11  in-between (see  FIG. 3  to  FIG. 5 ). Note that, in a front view, centers of the first light transmission channels  1201  almost overlap with centers of the first lenses  110 . 
     The second light control member  121  is supported on the five pillars  141  of the supporting member  14  and the three first bosses  1203  of the first light control member  120  so as to be in front of the first light control member  120  (see  FIG. 3  to  FIG. 5 ). The three second bosses  1213  of the second light control member  121  are bolted to the three first bosses  1203  of the first light control member  120 . Further, five screws  1215  are individually inserted into five holes  1214  provided to the second light blockers  1210  of the second light control member  121 . These five screws  1215  are individually inserted into the five holes  1214  provided to the second light blockers  1210 . Further, these five screws  1215  are individually engaged with and tightened to the female screws  1410  provided to the ends of the five pillars  141 . Note that, the pillars  141  protruding from a center of the base part  140  is inserted into both a hole  1132  provided to a center of the first support  113  of the first lens array  11  and a hole  1204  provided to a center of the first light blocker  1200  of the first light control member  120 . Note that, in a front view, centers of the second light transmission channels  1211  almost overlap with centers of the first lenses  110 . 
     The second lens array  13  is supported on the five pillars  141  of the supporting member  14  so as to be in front of the second light control member  121  (see  FIG. 2  to  FIG. 5 ). The five screws  1215  are individually inserted into five holes  132  (see  FIG. 1 ) provided to four corners and a center of the second support  131  of the second lens array  13 . Accordingly, the second lens array  13  is screwed (or bolted) to the five pillars  141  using the five screws  1215  together with the second light control member  121  (see  FIG. 2 ). Note that, in a front view, centers of the second lenses  130  almost overlap with centers of the first lenses  110 . 
     As shown in  FIG. 6 , with regard to rays L 1  to L 3  of emitted light emitted from the LED  100 , the ray L 1  of the emitted light strikes the light concentrator  111  of the first lens  110  and is concentrated by the light concentrator  111  and then emerges outside from the first lens  110 . With regard to the rays L 1  to L 3  of the emitted light emitted from the LED  100 , the rays L 2  and L 3  of the emitted light are not concentrated, but reflected by the reflector  112  (in a manner of total internal reflection) and then emerge outside from the first lens  110 . Inside the first light transmission channel  1201 , these rays L 2  and L 3  of the emitted light (reflected light) cross a ray of light (concentrated light) which emerges outside the first lens  110  after concentrated by the light concentrator  111  (see  FIG. 6 ). Note that, rays of the reflected light which emerge outside from the first lens  110  after reflected by the reflector  112  but are not transmitted by (do not pass through) the first light transmission channel  1201  and the second light transmission channel  1211  will be blocked by any of the first light blocker  1200 , the first hollow cylindrical part  1202 , the second light blocker  1210 , and the second hollow cylindrical part  1212 . In contrast, rays of light (the concentrated light and the reflected light) which are transmitted by (pass through) the first light transmission channel  1201  and the second light transmission channel  1211  strike the second lens  130 . The rays of light (the concentrated light and the reflected light) which strike the second lens  130  are refracted when emerging outside from the second lens  130  (see  FIG. 6 ). Thus, unnecessary rays of light (peripheral light) are excluded from rays of light which emerge outside from the second lens  130  by the light control member  12 , and therefore ununiformity of luminance at peripheries (edges) can be suppressed. Moreover, distribution of rays of light emitted from the second lens  130  is controlled by the second lens  130 . 
     Accordingly, rays of emitted light which are not concentrated by the light concentrator  111  of the first lens  110  are reflected by the reflector  112 , and therefore the illuminating device X 1  can improve the usage efficiency of light emitted from the LED  100 . Additionally, the illuminating device X 1  can block unnecessary rays of the reflected light reflected by the reflector  112 , by use of the first light blocker  1200  and the second light blocker  1210 . Therefore, the illuminating device X 1  can improve the uniformity ratio (degree of uniformity of illuminance on an illuminated plane (the uniformity ratio of illuminance)) of light (illumination light) emerging outside from the second lenses  130 . In addition, the illuminating device X 1  includes two light control members (the first light control member  120  and the second light control member  121 ) and therefore can block, by use of the two light control members (the first light control member  120  and the second light control member  121 ), unnecessary rays of light which cannot be blocked by one light control member (the first light control member  120 ). As a result, the illuminating device X 1  can further improve the uniformity ratio of illumination light compared with a case where the illuminating device X 1  includes a single light control member. Further, the illuminating device X 1  can block rays of reflected light which are transmitted by the first light transmission channel  1201  but travel toward other second light transmission channels  1211  adjacent to the corresponding second light transmission channel  1211 , by use of the first hollow cylindrical part  1202  and the second hollow cylindrical part  1212 . Consequently, the illuminating device X 1  can further improve the uniformity ratio of illumination light (the uniformity ratio of illuminance) compared with a case where the illuminating device X 1  does not include the first hollow cylindrical parts  1202  and the second hollow cylindrical parts  1212 . Moreover, the illuminating device X 1  can suppress unnecessary light from striking the second light transmission channels  1211 , and therefore can suppress halation. 
     As described above, the illuminating device X 1  includes the LEDs  100 , the first lens array  11 , the second lens array  13 , and the light control member  12 . The first lens array  11  includes the first lenses  110  individually corresponding to the LEDs  100 . The light control member  12  includes the light transmission channels (the first light transmission channels  1201 ) individually corresponding to the first lenses  110 , and the light blocker (the first light blocker  1200 ) surrounding the first light transmission channels  1201 . The second lens array  13  includes the second lenses  130  individually corresponding to the first light transmission channels  1201 . Each of the first lenses  110  includes the light concentrator  111  for producing concentrated light by concentrating a part of light emitted from a corresponding LED  100  of the LEDs  100 . Each of the first lenses  110  includes the reflector  112  surrounds the light concentrator  111  to produce reflected light by reflecting another part of the light emitted from the corresponding LED  100  in a direction across the concentrated light. Each of the first lenses  110  is configured to output illumination light including the concentrated light and the reflected light. Each of the light transmission channels (the first light transmission channels  1201 ) is for transmitting the illumination light output from a corresponding first lens  110  of the first lenses  110 . The light blocker (the first light blocker  1200 ) is for preventing transmission of the illumination light emitted from each of the first lenses  110 . Each of the second lenses  130  is for refracting the illumination light transmitted by a corresponding light transmission channel (the first light transmission channel  1201 ) of the light transmission channels (the first light transmission channels  1201 ). 
     The illuminating device X 1  is configured as described above, and therefore rays of emitted light which are not concentrated by the light concentrators  111  of the first lenses  110  are reflected by the reflectors  112  and thus the usage efficiency of light emitted from the LEDs  100  can be improved. Further, unnecessary rays of reflected light reflected by the reflectors  112  can be blocked by the first light blockers  1200  and the second light blockers  1210 , and the illuminating device X 1  can improve the uniformity ratio of illumination light emerging outside from the second lenses  130 . 
     Preferably, in the illuminating device X 1 , each of the light transmission channels may include the first light transmission channels  1201  and the second light transmission channels  1211 . The first light transmission channel  1201  may preferably face the first lens array  11  to transmit the illumination light output from a corresponding first lens  110  of the first lenses  110 . The second light transmission channels  1211  may preferably face the second lens array  13  to transmit the illumination light transmitted by the first light transmission channel  1201 . The light blocker may preferably include the first light blocker  1200  which faces the first lens array  11  and surrounds the first light transmission channel  1201  of each of the light transmission channels, and the second light blocker  1210  which faces the second lens array  13  and surrounds the second light transmission channel  1211  of each of the light transmission channels. 
     When the illuminating device X 1  configured as above, it can block, by use of the two light blockers (the first light blocker  1200  and the second light blockers  1210 ), unnecessary rays of light which cannot be blocked by one light blocking member. As a result, the illuminating device X 1  can further improve the uniformity ratio of illumination light compared with a case where the illuminating device X 1  includes a single light blocking member. 
     Additionally, in the illuminating device X 1 , the light control member (the first light control member  120 ) may preferably include the first hollow cylindrical parts  1202  individually surrounding the first light transmission channels  1201 . The light control member (the second light control member  121 ) may preferably include the second hollow cylindrical parts  1212  individually surrounding the second light transmission channels  1211 . The first hollow cylindrical parts  1202  may preferably protrude from the first light blocker  1200  toward the second light control member  121 . Moreover, the second hollow cylindrical parts  1212  may preferably protrude from the second light blockers  1210  toward the first light control member  120 . 
     When the illuminating device X 1  is configured as above, it can block rays of reflected light which are transmitted by the first light transmission channel  1201  but travel toward other second light transmission channels  1211  adjacent to the corresponding second light transmission channel  1211 , by use of the first hollow cylindrical part  1202  and the second hollow cylindrical part  1212 . Consequently, the illuminating device X 1  can further improve the uniformity ratio of illumination light compared with a case where the illuminating device X 1  does not include the first hollow cylindrical parts  1202  and the second hollow cylindrical parts  1212 . 
     Note that, the second hollow cylindrical parts  1212  are individually separated, by a predetermined distance d1, from the first hollow cylindrical parts  1202  in the forward and rearward direction (see  FIG. 3 ). However, as shown in  FIG. 7  and  FIG. 8 , the second hollow cylindrical parts  1212  may not be separated from and may be in contact with the first hollow cylindrical parts  1202 . In other words, the first hollow cylindrical parts  1202  and the second hollow cylindrical parts  1212  face each other and are in contact.  FIG. 7  and  FIG. 8  show an illuminating device X 2  according to a modification of Embodiment 1, in which the first hollow cylindrical parts  1202  have front ends in contact with rear end of the second hollow cylindrical parts  1212  individually. The illuminating device X 2  according to the modification can block rays of reflected light which are transmitted by the first light transmission channel  1201  but travel toward other second light transmission channels  1211  adjacent to the corresponding second light transmission channel  1211 , by use of the first hollow cylindrical part  1202  and the second hollow cylindrical part  1212 , in a similar manner to the illuminating device X 1  according to Embodiment 1. 
     However, when the illuminating device X 2  according to the modification is used outdoor, sunlight may be concentrated by the second lenses  130  and thus may cause great increases in temperatures at the front end parts of the first hollow cylindrical parts  1202  and the rear end parts of the second hollow cylindrical parts  1212 . When the first hollow cylindrical parts  1202  and the second hollow cylindrical parts  1212  are made of thermoplastic resin (e.g., polybutylene terephthalate resin), temperature increase may cause deformation of the first hollow cylindrical parts  1202  and the second hollow cylindrical parts  1212 . In particular, to suppress reflection of light, the second hollow cylindrical parts  1212  are colored with a color which absorbs light (sunlight) well (e.g., black). Hence, temperature may be considered to easily increase. 
     To address this problem, the second hollow cylindrical parts  1212  are individually separated from the first hollow cylindrical parts  1202  by the predetermined distance d1, and thereby the illuminating device X 1  according to Embodiment 1 can suppress increases in temperatures of the rear end parts of the second hollow cylindrical parts  1212 . Additionally, in the illuminating device X 1  according to Embodiment 1, the first light control member  120  including the first hollow cylindrical parts  1202  may preferably be colored with a color (e.g., white) which absorbs less sunlight than black. When the first hollow cylindrical parts  1202  have their surfaces whited, the illuminating device X 1  can suppress increases in temperatures of the front end parts of the first hollow cylindrical parts  1202 . Note that, the first light control member  120  may be made of synthetic resin which has low transmissivity and high reflectivity for sunlight. 
     As described above, in the illuminating device X 1 , the first hollow cylindrical parts  1202  and the second hollow cylindrical parts  1212  may preferably face each other and be separated by the predetermined distance d1. 
     When the illuminating device X 1  is configured as above, it can suppress an increase in temperature of the second hollow cylindrical parts  1212  even if sunlight enters the illuminating device X 1  through the second lenses  130 . 
     Further, in the illuminating device X 1 , each of the first hollow cylindrical parts  1202  may have a surface having a color which absorbs less sunlight than black. 
     When the illuminating device X 1  is configured as above, it can suppress an increase in temperature of the first hollow cylindrical parts  1202  even if sunlight enters the illuminating device X 1  through the second lenses  130 . 
     Note that, the first light transmission channels  1201  and the second light transmission channels  1211  are not necessarily circular holes. At least one of the first light transmission channels  1201  and the second light transmission channels  1211  may be formed into a shape other than a circular shape, such as a semicircular shape, a polygonal shape, and a star shape. In other words, at least one of the first light transmission channel  1201  and the second light transmission channel  1211  of each of the light transmission channels includes a non-circular through-hole. For example, when the first light transmission channels  1201  are formed into a semicircular shape, the shape of the illuminating light (which means a shape of an area illuminated by the illuminating light) emitted through the second lenses  130  also becomes a semicircular shape. 
     As described above, in the illuminating device X 1 , at least ones of the first light transmission channels  1201  and the second light transmission channels  1211  may preferably be formed in a shape configured to partially block the illumination light. 
     When the illuminating device X 1  is configured as above, a shape of the illuminating light emitted through the second lenses  130  can be easily changed by changing in shapes of the first light transmission channels  1201  and the second light transmission channels  1211 . 
     Note that, as shown in  FIG. 9A  and  FIG. 9B , the illuminating device X 1  may be preferably used as a light source of an illuminating fixture (projector) Y 1 . The illuminating fixture Y 1  may preferably include a fixture body  2 , an arm  3 , and a power supply unit  4 . The fixture body  2  may include a casing  20  and a cover  21 . The casing  20  is made of a metal plate such as a stainless steel plate, and is formed into a box shape with an open front face. The cover  21  includes a frame  22  and a panel  23 . The frame  22  is made of a metal plate such as a stainless steel plate, and is formed into a rectangular frame shape. The panel  23  is made of transparent or translucent synthetic resin (e.g., acrylic resin and polycarbonate resin), and is formed into a rectangular flat plate shape. The panel  23  is supported by the frame  22 . The cover  21  is attached to the casing  20  so as to cover the front face of the casing  20 . The arm  3  is made of a metal plate such as a stainless steel plate, and is formed into a U-shape. The arm  3  has opposite ends screwed to opposite side walls of the casing  20 . Thus, the casing  20  (the fixture body  2 ) is supported by the arm  3  in a rotatable manner. The power supply unit  4  includes the case  40  of metal, and a power supply accommodated in the case  40 . For example, the power supply converts AC power supplied from an AC power system into DC power. The case  40  is attached to a rear face of the casing  20  (see  FIG. 9B ). 
     As shown in  FIG. 9A , the casing  20  accommodates an illuminating unit  1 . As shown in  FIG. 10 , the illuminating unit  1  includes the four illuminating devices X 1 , an attaching plate  15 , and power cables  16 . The attaching plate  15  is made of a metal plate such as an aluminum plate and zinc steel plate, and is formed into a rectangular flat plate. The four illuminating devices X 1  are attached to a front face of the attaching plate  15  so as to be arranged in a two-by-two array in the upward and downward direction and the left and right direction. In each of the four illuminating devices X 1 , the four stepped parts  143  of the supporting member  14  are screwed (or bolted) to the attaching plate  15 . The power cable  16  includes power lines (in the illustrated example, four power lines) and a plug connector provided to ends of these four power lines. The power cable  16  is connected to the receptacle connector  102  of the LED module  10 . Thus, these four illuminating devices X 1  are supplied with DC power from the power supply unit  4  through the power cables  16 . 
     Embodiment 2 
     As shown in  FIG. 11 , an illuminating device X 3  according to Embodiment 2 includes an LED module  50 , a first lens array  51 , a light control member  52 , and a second lens array  53 . Additionally, the illuminating device X 3  may preferably include a first movable lens array  54 , a second movable lens array  55 , and a third movable lens array  56 . Note that, in the following description, unless otherwise noted, the forward, rearward, left, right, upward and downward directions of the illuminating device X 3  correspond to those shown in  FIG. 11  and  FIG. 12 . 
     The LED module  50  includes a printed wiring board  501  with a rectangular plate shape, and LEDs (in the illustrated example, eighty-five LEDs)  500  (see  FIG. 11 ). Note that, the number of LEDs  500  is not limited to  85 . There are circular holes  503  formed individually in four corners of the printed wiring board  501 . Note that, the LEDs  500  have the same configuration as the LEDs  100  in the illuminating device X 1  according to Embodiment 1. These LEDs  500  are soldered to pads formed on a front face of the printed wiring board  501  and thereby mounted on the front face (hereinafter referred to as “mounting surface”) of the printed wiring board  501 . Further, it is preferable that there be a receptacle connector  502  mounted on the mounting surface of the printed wiring board  501  (see  FIG. 11 ). The receptacle connector  502  is electrically connected to the LEDs  500  through printed wires (conductors) formed on the mounting surface of the printed wiring board  501 . 
     The first lens array  51  includes first lenses the number of which is equal to the number of LEDs  500 , and a first support  510  (see  FIG. 11 ). Note that, these first lenses have the same configuration as the first lenses  110  in the illuminating device X 1  according to Embodiment 1. The first support  510  supports the first lenses. The first support  510  is formed into an almost rectangular flat plate shape. The first lenses and the first support  510  may be formed integrally of transparent synthetic resin such as acrylic resin. Note that, there are circular holes  511  individually formed in four corners of the first support  510 . 
     The second lens array  53  includes second lenses  530  the number of which is equal to the number of LEDs  500 , and a second support  531  (see  FIG. 11 ). The second support  531  supports the second lenses  530 . The second support  531  is formed into an almost rectangular flat plate shape. Each of the second lenses  530  may preferably be a biconvex lens. The second lenses  530  and the second support  531  may be formed integrally of transparent synthetic resin such as acrylic resin. Note that, there are circular holes  532  individually formed in four corners of the second support  531 . 
     The light control member  52  may preferably include at least a first light control member  520  and a second light control member  521  (see  FIG. 11 ). The first light control member  520  includes a first light blocker  5200  and first light transmission channels  5201  the number of which is equal to the number of first lenses (that is, 85). The first light blocker  5200  may be preferably formed into a flat plate shape of material which does not transmit light emitted from LEDs  500  (e.g., opaque synthetic resin). The first light transmission channels  5201  each may preferably a circular hole penetrating the first light blocker  5200  in a thickness direction of the first light blocker  5200  (see  FIG. 11 ). Note that, there are circular holes  5202  individually formed in four corners of the first light blocker  5200 . 
     The second light control member  521  includes a second light blocker  5210  and second light transmission channels  5211  and third light transmission channels  5212  the numbers of which each are equal to the number of first light transmission channels  5201 . The second light blocker  5210  may be preferably formed into a flat plate shape of material which does not transmit light emitted from LEDs  500  (e.g., opaque synthetic resin). The second light transmission channels  5211  each may preferably a circular hole penetrating the second light blocker  5210  in a thickness direction of the second light blocker  5210  (see  FIG. 11 ). The third light transmission channels  5212  each may preferably a circular hole which penetrates the second light blocker  5210  in the thickness direction of the second light blocker  5210  and has an inner diameter smaller than each second light transmission channel  5211  (see  FIG. 11 ). Note that, there are oval holes  5213  individually formed in four corners of the second light blocker  5210 . These holes  5213  are formed to have long axes extending along the left and right direction. 
     The first movable lens array  54  includes first movable lenses  540  the number of which is equal to the number of LEDs  500 , and a first movable support  541  (see  FIG. 11 ). The first movable support  541  supports the first movable lenses  540 . The first movable support  541  is formed into an almost hexagonal shape. These first movable lenses  540  each may preferably a concave lens. The first movable lenses  540  and the first movable support  541  may be formed integrally of transparent synthetic resin such as acrylic resin. 
     The second movable lens array  55  includes second movable lenses  550  the number of which is equal to the number of LEDs  500 , and a second movable support  551  (see  FIG. 11 ). The second movable support  551  supports the second movable lenses  550 . The second movable support  551  is formed into an almost hexagonal shape. These second-movable lenses  550  each may preferably a biconvex lens. The second movable lenses  550  and the second movable support  551  may be formed integrally of transparent synthetic resin such as acrylic resin. 
     The third movable lens array  56  includes third movable lenses the number of which is equal to the number of LEDs  500 , and a third movable support  560  (see  FIG. 11 ). The third movable support  560  supports the third movable lenses. The third movable support  560  is formed into an almost hexagonal shape. These third movable lenses each may preferably a concave lens. The third movable lenses and the third movable support  560  may be formed integrally of transparent synthetic resin such as acrylic resin. 
     With regard to emitted light emitted from the LED  500 , part of the emitted light striking the first lens is concentrated and then emerges outside from the first lens. With regard to the emitted light emitted from the LED  500 , part of the emitted light which is not concentrated by the first lens, is reflected inside the first lens (in a manner of total internal reflection) and then emerges outside from the first lens. Inside the first light transmission channel  5201 , the emitted light (reflected light) crosses light (concentrated light) which is concentrated. Note that, part of the reflected light which emerges outside from the first lens and is not transmitted by (does not pass through) the light transmission channel (the first light transmission channel  5201  and the second light transmission channel  5211  or the third light transmission channel  5212 ) of the light control member  52  will be blocked by the first light blocker  5200  or the second light blocker  5210 . In contrast, part of light (the concentrated light and the reflected light) which is transmitted by (passes through) the first light transmission channel  5201  and the second light transmission channel  5211  (or the third light transmission channel  5212 ) strikes the second lens  530 . The part of the light (the concentrated light and the reflected light) which strikes the second lens  530  is refracted when emerging outside from the second lens  530 . Thus, unnecessary light (peripheral light) is excluded from light which emerges outside from the second lens  530  by the light control member  52 , and therefore ununiformity of luminance at peripheries (edges) can be suppressed. Moreover, distribution of light emitted from the second lens  530  is controlled by the second lens  530 . 
     Additionally, light emitted outside through the second lenses  530  is refracted each time transmitted by any of the first movable lenses  540 , the second movable lenses  550 , and the third movable lenses. The first movable lenses  540 , the second movable lenses  550  and the third movable lenses are designed in order to allow increases in diameters of beams and aberration correction, of light emerging from the second lenses  530 . 
     Additionally, it is preferable that the first movable lens array  54  and the second movable lens array  55  be movable by a moving mechanism  7  so as to increase and decrease distances (intervals) between the first movable lens array  54  and the second lens array  53  and between the second movable lens array  55  and the second lens array  53 . Moreover, it is preferable that the third movable lens array  56  be movable by the moving mechanism  7  so as to increase and decrease distances (intervals) between the third movable lens array  56  and the first movable lens array  54  and between the third movable lens array  56  and the second movable lens array  55 . Hereinafter, the moving mechanism  7  of the illuminating device X 3  is described with reference to  FIG. 12  to  FIG. 14 . 
     The illuminating device X 3  may preferably include a casing  6  together with the moving mechanism  7 . As shown in  FIG. 12  to  FIG. 14 , the casing  6  may preferably include a bottom plate  60 , a top plate  61 , a front plate  62 , a rear plate  63  and an intermediate plate  64 . The bottom plate  60  and the top plate  61  each are made of a rectangular metal plate. The top plate  61  is shorter in the forward and rearward direction than the bottom plate  60  (see  FIG. 12 ). The front plate  62 , the rear plate  63  and the intermediate plate  64  may be preferably formed into a rectangular plate shape of an aluminum die-casting product. The LED module  50  and a heat dissipation member  65  are screwed to a rear face of the rear plate  63 . The rear plate  63  has holes the number of which is equal to the number of LEDs  500 . These holes each penetrate the rear plate  63  in the forward and rearward direction. The first lenses of the first lens array  51  are individually inserted into the holes of the rear plate  63 . The front plate  62  includes a circular window hole  620  which penetrates therethrough in a thickness direction (the forward and rearward direction). Likewise, the intermediate plate  64  includes a circular window hole  640  which penetrates therethrough in a thickness direction (the forward and rearward direction) (see  FIG. 12 ). The front plate  62  is screwed to a front end of the bottom plate  60  and a front end of the top plate  61 . Additionally, the rear plate  63  is screwed to the bottom plate  60  at part close to a rear end of the bottom plate  60 , and also is screwed to a rear end of the top plate  61 . Moreover, the intermediate plate  64  is screwed to intermediate parts of the bottom plate  60  and the top plate  61  in the forward and rearward direction. 
     The moving mechanism  7  may include a first holder  70 , a second holder  71 , four axles  72  and eight linear bearings  73 . The first holder  70  is an aluminum die-casting product and is formed into a rectangular frame shape. Further, the first holder  70  includes a circular window hole penetrating therethrough in a thickness direction (the forward and rearward direction). The first movable lens array  54  and the second movable lens array  55  are screwed to a front face of the first holder  70 . Note that, in a front view, the first movable lenses  540  of the first movable lens array  54  and the second movable lenses  550  of the second movable lens array  55  are positioned inside the window hole of the first holder  70 . In addition, there is a handle  74  with an inverted U-shape attached to an upper face of the first holder  70 . Note that, opposite ends of the handle  74  are individually inserted into a pair of grooves  610  provided to the top plate  61 , as shown in  FIG. 12 . 
     The second holder  71  is an aluminum die-casting product and is formed into a rectangular frame shape. Further, the second holder  71  includes a circular window hole  710  penetrating therethrough in a thickness direction (the forward and rearward direction) (see  FIG. 12 ). The third movable lens array  56  is screwed to a rear face of the second holder  71 . Note that, in a front view, the third movable lenses of the third movable lens array  56  are positioned inside the window hole  710  of the second holder  71 . In addition, there is a handle  75  with an inverted U-shape attached to an upper face of the second holder  71 . Note that, opposite ends of the handle  75  are individually inserted into a pair of grooves  611  provided to the top plate  61 , as shown in  FIG. 12 . 
     Four linear bearings  73  are screwed to four corners of the first holder  70  and other four linear bearings  73  are screwed to four corners of the second holder  71 . The linear bearings  73  may include a bearer which has a hollow circular cylindrical shape and includes a rim (flange)  730  at one end, and rotors held by the bearer. The bearers of the linear bearings  73  are inserted into holes (holes penetrating in the forward and rearward direction) formed in the four corners of the first holder  70  and the four corners of the second holder  71 . The rims  730  of the linear bearings  73  are screwed to the first holder  70  and the second holder  71 . 
     The four axles  72  each are made of metal material such as stainless steel material, and formed into an elongated circular solid cylindrical shape. These four axles  72  have frond ends screwed to the four corners of the front plate  62 , individually. These four axles  72  have rear ends screwed to the four corners of the rear plate  63 , individually. Additionally, these four axles  72  are inserted into holes penetrating the four corners of the intermediate plate  64 , individually. Accordingly, in a front view, these four axles  72  are positioned in four corners of the casing  6  so as to be parallel to the bottom plate  60  and the top plate  61  and be perpendicular to the intermediate plate  64  and the rear plate  63  (see  FIG. 12  to  FIG. 14 ). Note that, these four axles  72  are inserted into the holes  503  in the four corners of the LED module  50 , the holes  511  in the four corners of the first lens array  51 , the holes  5202  and the holes  5213  each in the four corners of the light control member  52 , and the holes  532  in the four corners of the second lens array  53 , individually. 
     Further, these four axles  72  are engaged to the four linear bearings  73  attached to the first holder  70  and also engaged to the other four linear bearings  73  attached to the second holder  71  (see  FIG. 12 ). Accordingly, the first holder  70  and the second holder  71  are placed in a space between the front plate  62  and the intermediate plate  64  so that the linear bearings  73  allow the first holder  70  and the second holder  71  to move in the forward and rearward direction along the four axles  72 . 
     The first holder  70  and the second holder  71  are interconnected by two interconnecting members  76 . As shown in  FIG. 14 , the two interconnecting members  76  each are formed into an elongated bar shape. Each of the two interconnecting members  76  includes a first guiding hole  760  and a second guiding hole  761 . The first guiding hole  760  is formed into an oval shape penetrating a rear end part of the interconnecting members  76  in the upward and downward direction. The second guiding hole  761  is formed into an oval shape penetrating a front end part of the interconnecting members  76  in the upward and downward direction. Note that, the second guiding hole  761  has a dimension in a long axis which is longer than a dimension in a long axis of the first guiding hole  760  (see  FIG. 14 ). A first one of the interconnecting members  76  is attached to the top plate  61  by a bolt  77  and a nut so as to be rotatable around the bolt  77 . A second one of the interconnecting members  76  is attached to the bottom plate  60  by a bolt and a nut so as to be rotatable around the bolt. Further, there is a first pin  700  which protrudes from the upper face of the first holder  70  and is inserted into the first guiding hole  760  of the interconnecting member  76  attached to the top plate  61 . Furthermore, there is a second pin  711  which protrudes from the upper face of the second holder  71  and is inserted into the second guiding hole  761  of the interconnecting member  76  attached to the top plate  61 . Additionally, there is a first pin which protrudes from the lower face of the first holder  70  and is inserted into the first guiding hole of the interconnecting member  76  attached to the bottom plate  60 . Moreover, there is a second pin which protrudes from the lower face of the second holder  71  and is inserted into the second guiding hole of the interconnecting member  76  attached to the bottom plate  60 . 
     Accordingly, when the second holder  71  moves forward, the second pin  711  also moves forward within the second guiding hole  761 . When the second pin  711  moves forward within the second guiding hole  761 , the interconnecting member  76  rotates around the bolt  77  counterclockwise. When the interconnecting member  76  rotates counterclockwise, the first pin  700  moves rearward within the first guiding hole  760 . Such a rearward movement of the first pin  700  within the first guiding hole  760  causes a rearward movement of the first holder  70 . In contrast, when the second holder  71  moves rearward, the second pin  711  also moves rearward within the second guiding hole  761 . When the second pin  711  moves rearward within the second guiding hole  761 , the interconnecting member  76  rotates around the bolt  77  clockwise. When the interconnecting members  76  rotates clockwise, the first pin  700  moves forward within the first guiding hole  760 . Such a forward movement of the first pin  700  with in the first guiding hole  760  causes a forward movement of the first holder  70 . As described above, the first holder  70  and the second holder  71  which are interconnected by the interconnecting members  76  move so as to change a distance (interval) between the first holder  70  and the second holder  71 . The illuminated area of light (illuminating light) emitted forward through the window hole  710  of the second holder  71  is increased with a decrease in the distance (interval) between the first holder  70  and the second holder  71 . In contrast, the illuminated area of illuminating light is decreased with an increase in the distance (interval) between the first holder  70  and the second holder  71 . Note that, the first holder  70  and the second holder  71  are moved in the forward and rearward direction in accordance with movements of the handles  74  and  75  in the forward and rearward direction by hand, respectively. 
     Accordingly, the illuminating device X 3  allows movement of the first movable lens array  54 , the second movable lens array  55  and the third movable lens array  56  in the forward and rearward direction (a direction parallel to optical axes of the second lenses  530 ) relative to the casing  6 , and therefore it is possible to change an illuminated area easily. Note that, the number of movable lens arrays is not limited to 3, but may be 1 or 2 or 4 or more. 
     Additionally, the four holes  5213  of the second light control member  521  are formed into an oval shape with a long axis along the left and right direction. The second light control member  521  is allowed to move in the left and right direction while being supported by the four axles  72 . When the second light control member  521  is moved its right position, rays of light which have passed through the first light transmission channels  5201  of the first light control member  520  are allowed to pass through the second light transmission channels  5211 . In contrast, when the second light control member  521  is moved to its left position, rays of light which have passed through the first light transmission channels  5201  of the first light control member  520  are allowed to pass through the third light transmission channels  5212 . Thus, movement of the second light control member  521  in the left and right direction can cause a change in diameters of holes (apertures) for transmitting light. Accordingly, the second light transmission channels  5211  and the third light transmission channels  5212  can be switched, and therefore the illuminating device X 3  can change the illuminated area of the illuminating light. Note that, the second light transmission channels  5211  and the third light transmission channels  5212  may be holes with a shape other than a circular shape. For example, when the second light transmission channels  5211  are semicircular holes and the third light transmission channels  5212  are circular holes, the shape of (the illuminated area) of the illuminating light of the illuminating device X 3  can be switched between a semicircular shape and a circular shape. 
     As described above, the illuminating device X 3  may preferably include a movable lens array (the first movable lens array  54 , the second movable lens array  55 , the third movable lens array  56 ) including movable lenses (the first movable lenses  540 , the second movable lenses  550 , the third movable lenses) individually corresponding to the second lenses  530 . Additionally, the illuminating device X 3  may preferably include the moving mechanism  7  configured to move the movable lens array along optical axes of the second lenses  530 . Each of the movable lenses (the first movable lenses  540 , the second movable lenses  550 , the third movable lenses) may preferably be configured to refract the illumination light refracted by a corresponding second lens  530  of the second lenses  530 . 
     When the illuminating device X 3  is configured as above, the illuminated area can be easily changed by moving the movable lens array (the first movable lens array  54 , the second movable lens array  55 , the third movable lens array  56 ). 
     As apparent from aforementioned Embodiment 1 and 2, the illuminating device (X 1 , X 2 , X 3 ) of the first aspect includes light emitting diodes ( 100 ,  500 ), a first lens array ( 11 ,  51 ), a second lens array ( 13 ,  53 ), and a light control member ( 12 ,  52 ). The first lens array ( 11 ,  51 ) includes first lenses ( 110 ) individually corresponding to the light emitting diodes ( 100 ,  500 ). The light control member ( 12 ,  52 ) includes light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ) individually corresponding to the first lenses ( 110 ) and a light blocker ( 1200 ,  1210 ,  5200 ,  5210 ) surrounding the light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ). The second lens array ( 13 ,  53 ) includes second lenses ( 130 ,  530 ) individually corresponding to the light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ). Each of the first lenses ( 110 ) includes a light concentrator ( 111 ) for producing concentrated light by concentrating a part of light emitted from a corresponding light emitting diode ( 100 ,  500 ) of the light emitting diodes ( 100 ,  500 ), and a reflector ( 112 ) surrounding the light concentrator ( 111 ) to produce reflected light by reflecting another part of the light emitted from the corresponding light emitting diode ( 100 ,  500 ) in a direction across the concentrated light and being configured to output illumination light including the concentrated light and the reflected light. Each of the light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ) is for transmitting the illumination light output from a corresponding first lens ( 110 ) of the first lenses ( 110 ). The light blocker ( 1200 ,  1210 ,  5200 ,  5210 ) is for preventing transmission of the illumination light emitted from each of the first lenses ( 110 ). Each of the second lenses ( 130 ,  530 ) is for refracting the illumination light transmitted by a corresponding light transmission channel ( 1201 ,  1211 ,  5201 ,  5211 ) of the light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ). According to the first aspect, it is possible to improve the usage efficiency of light emitted from light emitting diodes ( 100 ,  500 ) and additionally improve the uniformity ratio of illumination light. 
     The illuminating device (X 1 , X 2 , X 3 ) of the second aspect can be realized in combination with the first aspect. In the second aspect, each of the light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ) includes a first light transmission channel ( 1201 ,  5201 ) and a second light transmission channel ( 1211 ,  5211 ). The first light transmission channel ( 1201 ,  5201 ) faces the first lens array ( 11 ,  51 ) to transmit the illumination light output from a corresponding first lens ( 110 ) of the first lenses ( 110 ). The second light transmission channel ( 1211 ,  5211 ) faces the second lens array ( 13 ,  53 ) to transmit the illumination light transmitted by the first light transmission channel ( 1201 ,  5201 ). The light blocker includes a first light blocker ( 1200 ,  5200 ) which faces the first lens array ( 11 ) and surrounds the first light transmission channel ( 1201 ,  5201 ) of each of the light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ), and a second light blocker ( 1210 ,  5210 ) which faces the second lens array ( 13 ,  53 ) and surrounds the second light transmission channel ( 1211 ,  5211 ) of each of the light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ). According to the second aspect, it is possible to further improve the uniformity ratio of illumination light compared with a case where only a single light blocking member is provided. 
     The illuminating device (X 1 , X 2 , X 3 ) of the third aspect can be realized in combination with the second aspect. In the third aspect, the light control member (the first light control member  120 ) includes first hollow cylindrical parts ( 1202 ) individually surrounding the first light transmission channels ( 1201 ). The light control member (the second light control member  121 ) includes second hollow cylindrical parts ( 1212 ) individually surrounding the second light transmission channels ( 1211 ). The first hollow cylindrical parts ( 1202 ) protrude from the first light blocker ( 1200 ) toward the second light blocker ( 1210 ). The second hollow cylindrical parts ( 1212 ) protrude from the second light blocker ( 1210 ) toward the first light blocker ( 1200 ). According to the third aspect, it is possible to further improve the uniformity ratio of illumination light compared with a case where the first hollow cylindrical parts ( 1202 ) and the second hollow cylindrical parts ( 1212 ) are not provided. 
     The illuminating device (X 1 , X 3 ) of the fourth aspect can be realized in combination with the third aspect. In the fourth aspect, the first hollow cylindrical parts ( 1202 ) and the second hollow cylindrical parts ( 1212 ) face each other and are separated by a predetermined distance (d1). According to the fourth aspect, it is possible to suppress an increase in temperature of the second hollow cylindrical parts ( 1212 ) even if sunlight enters the illuminating device (X 1 , X 3 ) through the second lenses ( 130 ). 
     The illuminating device (X 1 , X 3 ) of the fifth aspect can be realized in combination with the fourth aspect. In the fifth aspect, each of the first hollow cylindrical parts ( 1202 ) has a surface having a color which absorbs less sunlight than black. According to the fifth aspect, it is possible to suppress an increase in temperature of the first hollow cylindrical parts ( 1202 ) even if sunlight enters the illuminating device (X 1 , X 3 ) through the second lenses ( 130 ). 
     The illuminating device (X 1 , X 2 , X 3 ) of the sixth aspect can be realized in combination with any one of the third to fifth aspects. In the sixth aspect, in each of the light transmission channels, at least one of the first light transmission channel ( 1201 ) and the second light transmission channel ( 1211 ) has a shape configured to partially block the illumination light output from a corresponding first lens ( 110 ) of the first lenses ( 110 ). According to the sixth aspect, a shape of the illuminating light emitted through the second lenses ( 130 ) can be easily changed by changing in shapes of the first light transmission channels ( 1201 ) and the second light transmission channels ( 1211 ). 
     The illuminating device (X 2 ) of the seventh aspect can be realized in combination with the third aspect. In the seventh aspect, the first hollow cylindrical parts ( 1202 ) and the second hollow cylindrical parts ( 1212 ) face each other and are in contact. 
     The illuminating device (X 1 , X 2 , X 3 ) of the eighth aspect can be realized in combination with the third aspect. In the eighth aspect, each of the first hollow cylindrical parts ( 1202 ) has a diameter which becomes smaller as a distance from the first light blocker ( 1200 ) increases. 
     The illuminating device (X 1 , X 2 , X 3 ) of the ninth aspect can be realized in combination with the eighth aspect. In the ninth aspect, each of the second hollow cylindrical parts ( 1212 ) has a diameter which becomes smaller as a distance from the second light blocker ( 1210 ) increases. 
     The illuminating device (X 1 , X 2 , X 3 ) of the tenth aspect can be realized in combination with the second aspect. In the tenth aspect, at least one of the first light transmission channel ( 1201 ) and the second light transmission channel ( 1211 ) of each of the light transmission channels ( 1201 ,  1211 ) includes a non-circular through-hole. 
     The illuminating device (X 3 ) of the eleventh aspect can be realized in combination with the first or second aspect. The eleventh aspect includes a movable lens array (the first movable lens array  54 , the second movable lens array  55 , the third movable lens array  56 ) including movable lenses (the first movable lenses  540 , the second movable lenses  550 , the third movable lenses) individually corresponding to the second lenses ( 130 ,  530 ). Additionally, the seventh aspect includes a moving mechanism ( 7 ) configured to move the movable lens array along optical axes of the second lenses ( 130 ,  530 ). Each of the movable lenses (the first movable lenses  540 , the second movable lenses  550 , the third movable lenses) may preferably be configured to refract the illumination light refracted by a corresponding second lens ( 130 ,  530 ) of the second lenses ( 130 ,  530 ). According to the eleventh aspect, the illuminated area can be easily changed by moving the movable lens array (the first movable lens array  54 , the second movable lens array  55 , the third movable lens array  56 ). 
     The illuminating device (X 1 , X 2 , X 3 ) of the twelfth aspect can be realized in combination with the first aspect. In the twelfth aspect, the reflector ( 112 ) surrounds a light entrance surface ( 111   a ) of the light concentrator ( 111 ). 
     The illuminating device (X 1 , X 2 , X 3 ) of the thirteenth aspect can be realized in combination with the first aspect. In the thirteenth aspect, the light blocker ( 1200 ,  1210 ,  5200 ,  5210 ) has a flat plate shape of material. The light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ) have circular through-holes penetrating the light blocker ( 1200 ,  1210 ,  5200 ,  5210 ). 
     The illuminating device (X 1 , X 2 , X 3 ) of the fourteenth aspect can be realized in combination with the first aspect. In the fourteenth aspect, the light blocker ( 1200 ,  1210 ,  5200 ,  5210 ) has a flat plate shape of material. The light transmission channels ( 1201 ,  1211 ,  5201 ,  5211 ) have non-circular through-holes penetrating the light blocker ( 1200 ,  1210 ,  5200 ,  5210 ). 
     The illuminating device (X 1 , X 2 , X 3 ) of the fifteenth aspect can be realized in combination with any one of the first to fourteenth aspects. In the fifteenth aspect, in each of the first lenses ( 110 ), the light concentrator ( 111 ) and the reflector ( 112 ) are formed integrally. 
     While the foregoing has described what are considered to be the best mode and/or other examples, it is understood that various modifications may be made therein and that the subject matter disclosed herein may be implemented in various forms and examples, and that they may be applied in numerous applications, only some of which have been described herein. It is intended by the following claims to claim any and all modifications and variations that fall within the true scope of the present teachings.