Abstract:
A street lighting fixture having a flat upper surface designed to increase the inner space of a reflector, allowing to install induction lamps of great size solving the problem of universality, additionally having a trapezoidal-shaped convex central portion which facilitates the installation of the lamp.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    A. Field of the Invention 
         [0002]    B. Disclosure of the Related Art 
         [0003]    Nowadays, technological development related to public lighting is focused to increase the useful life of the fixtures maintaining a high light intensity with low energy consumption. Induction lamps are high technology lighting accessories following said development focus. 
         [0004]    Induction lighting is incorporated in a new lamp type based on the theory of the high frequency plasma discharge. Said new fixtures are a new scientific and technological achievement related with the optical, power electronics, plasma science and materials science, and have the advantage of being highly efficient, have a long useful life, a high color rendering index, being environment friendly and achieve great energy savings. They are suitable to be installed in tunnels, high traffic zones, subway stations, vestibules and other public areas. 
         [0005]    The current induction lamps are designed to be uses in private fixture structures having complicated structure, having a high cost and a low universality. As the upper part of the traditional fixture is a completely flat surface or comprising a single curve surface, the inner space is limited and is not suitable for installing a large induction lamp. The light source of a traditional fixture is installed directly at the top, causing a low convergent effect. Besides, the space at the ballast holder is fixed, so that it can be installed a single ballast of the same size. 
         [0006]    In view of the disadvantages formerly mentioned of the existing technology, applicant developed a fixture which has an induction lamp having an improved form and structure regarding the currently existing fixtures. 
         [0007]    The fixture of the present invention comprising: a housing, a reflector, a support which is connected to the housing by means of a screw, a removable cover art which can be penetrated by the light at the lower part of the housing, an aluminum cover and a lid. 
         [0008]    Wherein said reflector including an upper flat surface, convex curved side surfaces and a transition surface between them, all of them coated with a vacuum electroplated reflective layer; its central portion having a convex trapezoidal form which allows the installation of the light source, and the transition surface is curved and wherein said reflector is made of aluminum. 
         [0009]    Furthermore, a housing for installing the fixed ballast holder is included in said support, which is removable and can be connected my means of two fixed ballast holders, each of which has a bore for the ballast installation, Preferably, the convex trapezoidal form of the upper part of the reflector is designed to be integrated with the upper part. 
         [0010]    The fixture of the present invention has the following advantages regarding the current fixtures: in the first place, instead of having a single flat or curved surface existing in the traditional fixtures, it has a flat upper surface designed to increase the inner space of the reflector, which allow to install large induction lamps, solving the problem of the universality. In the second place, the reflector has a central portion of convex trapezoidal form, which facilitates the installation of the lamp. Besides, the distance between the lamp and the reflector is greater regarding the current fixtures, increasing in this way the efficiency of the fixture. As the inner surface of the reflector has a vacuum electroplated metallic coating, the reflector achieves an excellent reflecting effect. Last but not least, the support is fixed with rivets at one side and with screws at the other side and there is a housing for installing the fixed beams. Said design has the advantage that ballast of diverse size can be installed. 
       SUMMARY OF THE INVENTION 
       [0011]    It is therefore a main object of the present invention, to provide a fixture comprising: a housing, a reflector a support which is connected to the housing by means of a screw, a removable cover art which can be penetrated by the light at the lower part of the housing, an aluminum cover and a lid. 
         [0012]    It is another main object of the present invention, to provide a fixture of the nature above disclosed which, instead of having a single flat or curved surface that existing in the traditional fixtures, it has an upper flat surface designed to increase the inner surface of the reflector, which allows to install induction laps of great size, solving the problem of the universality. 
         [0013]    It is still a main object of the present invention, to provide a fixture of the above disclosed nature, in which the reflector has a central portion having a convex trapezoidal form which facilitates the installation of the lamp. 
         [0014]    It is an additional object of the present invention, to provide a street lighting fixture of the above disclosed nature, wherein the distance between the lamp and the reflector is bigger regarding the traditional fixtures, so that increases the efficiency of the fixture. 
         [0015]    It is another additional object of the present invention, to provide a fixture of the above disclosed nature, wherein the inner surface of the reflector is coated with a vacuum electroplated metallic layer, achieving in this way an excellent reflecting effect 
         [0016]    It is still an additional object of the present invention, to provide a fixture of the above disclosed nature, in which ballast of diverse size can be installed. 
         [0017]    These and other objects and advantages of the present invention will became apparent to those skilled in the art, from the following detailed description of the invention. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1 , is a perspective exploded view of the Street lighting fixture of the present invention; 
           [0019]      FIG. 2 , is a lower view of the housing of the street lighting fixture of the present invention; 
           [0020]      FIG. 3 , is an upper view of the housing of the street lighting fixture of the present invention; 
           [0021]      FIG. 4 , is a frontal perspective view of the support of the street lighting fixture of the present invention; 
           [0022]      FIG. 5 , is a rear perspective view of the support of the street lighting fixture of the present invention; 
           [0023]      FIG. 6 , is an upper view of the aluminum cover art for the ballast of the street lighting fixture of the present invention 
           [0024]      FIG. 7 , is an upper view of the concave reflector of the street lighting fixture of the present invention  FIG. 8 , is a perspective view of the concave reflector of the street lighting fixture of the present invention; and 
           [0025]      FIG. 9 , is a lower view of the circular holding frame of the street lighting fixture of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0026]    The fixture of the present invention will now described referring to a preferred embodiment thereof and in combination with the accompanied drawings, wherein the same signs refer to the same drawn elements. 
         [0027]    Referring to  FIG. 1 , the fixture of the present invention comprising in its most general embodiment: 
         [0028]    a housing  300 , comprising a concave shaped member, like a drop, having a first end and a second end and an inner surface; 
         [0029]    a support  200 , comprising a flat enlarged member, connected to the inner surface of the housing  300  at a portion near to the longitudinal center thereof; 
         [0030]    a ballast aluminum cover  400 , having a first end joined to the support member  201  and a second joined to the second end of the housing  300 ; 
         [0031]    a concave reflector  100 , lodged in the concave inner surface  304  of the housing  300 ; 
         [0032]    an induction lamp  700  joined to the concave reflector  100 ; and 
         [0033]    a circular holding frame  500 , having a first end and a second end wherein the second end is joined to the support  201  and the first end is joined to the first end of the housing  300  and in turn is joined to the concave reflector  100 , wherein the circular holding frame  500  supports the concave reflector  100  besides to the induction lamp and a translucent cover art  600  within the housing  300 . 
         [0034]    Now, referring to  FIGS. 2 to 9 , the fixture of the present invention comprising, in a specific embodiment: 
         [0035]    a housing  300  ( FIGS. 2 and 3 ) comprising a concave shaped member, like a drop, having:
       a first end  301  and a second end  302 ;   an outer surface  303  and a concave inner surface  304 ;   a first bearing  305  and a second bearing  305 ′, each having a bore and each depending from the inner wall  304  of the housing  300 , at opposite sides near to the second end  2  thereof;   a first pivotal housing  306  and a second pivotal housing  306 ″, each one depending from the inner wall periphery  304  of the housing  300  at opposite sides of the second end  302  thereof;   a bore  307 , located at a central portion of the first end  301  of the housing  300 ;       
 
         [0041]    a support  200  ( FIGS. 4 and 5 ) comprising an elongated flat member connected to the housing  300  by means of screws, having:
       a first connecting member  201  and a second connecting member  201 ′ for connecting the housing  300 , each of which comprising a flat member depending directly from opposite ends of a lower portion of the support  200 , in a perpendicular way thereof, wherein said first connecting member  201  and second connecting member  201 ′ each includes a pair of bores  202 ,  202 ′,  203 ,  203 ′ wherein the bores  202 ′ and  203 ′ each receive a screw which is screwed to the bores of the first bearing  305  and second bearing  305 ′ respectively, joining in this way the support  200  to the housing  300 ;   a first joining hook  204  and a second joining hook  204 ′, each depending from an upper portion of the support  200  and each located near of a respective end thereof;   three bores  205 ,  205 ′ and  205 ″, two thereof  205 ′,  205 ″ located near of an end of the support, next one to the other and the remaining bore  205  located near the opposite end of the support;   a first ballast holder beam  206  and a second ballast holder beam  206 ′, each having a square shape with a main section  207 ,  208  and a support joint section  207 ′,  208 ′, which has a bore, wherein:
           the joint section  208 ′ of the second ballast holder beam  206 ′ is fixedly joined to the support  201  by means of a rivet  209  passing through the bore located in said joint section and through the bore  205 ″;   the joint section  207  of the first ballast holder beam  206  is removable joined to the support  201  by means of a screw  210  passing through the bore located in said joint section and through the bore  205 ′ so that said first beam  206  can be unscrewed from said bore  205 ′ and screwed to the next bore  205 , so that the distance between both ballast holder beams  206 ,  206 ′ can be varied in order to hold ballast of different size;   the main section  207 ,  208  of the first beam  206  and the second beam  206 ′ having a plurality of bores  211 ,  211 ′ to facilitate the installation of a ballast;   a member  212  to screw an aluminum cover  400 , comprising a “U”-shaped member depending directly from an upper central portion of the support  200 , wherein said support  212  includes a bore  213 ;   
               
 
         [0050]    an aluminum cover  400  for a ballast ( FIG. 6 ) having a “U”-shaped cross section, formed by two side walls depending from a lower wall and having:
       an inner wall  401  and an outer wall (not shown);   a first end  402  and a second end  403 ;   a bearing having a bore  404  depending from the inner surface  401  at the central portion of the first end  402 , to receive a screw to be screwed to the bore  213  of the support member  200 , wherein the first end  402  is attached to the support  200 ;   a hinge  405  depending from the inner surface  401  of the second end  403 , which is pivotally placed in the first housing  306  and second housing  306 ′, for pivoting of the housing  300 , pivotally joining in this way the second end  402  of the aluminum cover  400  to the second end  302  of the housing  300         
 
         [0055]    a concave reflector  100  ( FIGS. 7 and 8 ) placed at the concave inner surface  304  of the housing  300 , having a concave inner surface  102  whole covered with a layer of a vacuum electroplated reflecting metallic material and an outer surface, wherein:
       the upper part of the concave inner surface  102  is flat; the central part having an enlarged trapezoidal projection  103  crossing all the reflector from edge to edge and which depends form the upper wall of the concave inner surface projecting thereto; and the inner surrounding edge  104  has a curve convex shape to increase the reflecting surface, so that the reflected light could be diffused, allowing that the light be uniformly projected;   the transition surface  105  between the upper part and the inner surrounding edge is curve, which helps to increase the space within the reflector  100  at the maximum;   a bore  106  is included for the installation of a lamp;   a screwed bore  107  is included, placed at the inner surrounding edge to allow access to the feeding wires of the lamp; and   a translucent cover art  600  ( FIG. 1 ) is included, joined to the edge of the reflector, completely covering the inner surface thereof;   an induction lamp  700  ( FIG. 1 ) joined to the concave reflector  100  by means of screws (not shown) screwed to the bore  106 ;       
 
         [0062]    an circular holding frame  500  ( FIG. 9 ) comprising a ring having the same oval peripheral shape that the housing  300 , said circular holding frame having a first longitudinal end  501  and a second longitudinal end  502  including: 
         [0063]    a bore  503  at one central portion of the first longitudinal end  501 , to receive a screw which is screwed into the bore  301  of the housing  300 , joining in this way the first end  501  of the circular holding frame  500 , with the first end  301  of the housing; 
         [0064]    a joining hinge  504 , located at the second longitudinal end  502  of the circular holding frame, said joining hinge  504  pivotally joining the first joining hook  204  and the second joining hook  204 ′ of the support  200 , and pivotally joining in this way the second end  501  of the circular holding frame  500  to the support  200  and therefore to the housing  300 ; 
         [0065]    wherein the circular holding frame  500 , holds the concave reflector  100  together with the induction lamp  700  and the translucent cover art  600  within the housing  300 ; 
         [0066]    Finally, it should be understood that the street lighting fixture of the present invention, is not limited exclusively to the embodiments above disclosed and illustrated and that the persons ordinary skilled in the art could, with the teachings herein disclosed of the invention, make modifications to the street lighting fixture of the present invention, which will be clearly within the inventive concept and scope of the invention which is claimed in the following claims.