Source: https://patents.google.com/patent/DE10330264B4/en
Timestamp: 2020-06-02 10:54:34
Document Index: 523689122

Matched Legal Cases: ['art 1', 'art 2', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 24', 'art 14', 'art 14', 'art 24', 'art 24', 'art 24', 'art 24', 'art 24', 'art 14', 'art 24', 'art 24', 'art 24', 'art 34', 'art 14', 'art 34', 'art 14', 'art 34', 'art 34', 'art 14', 'art 34', 'art 34', 'art 34', 'art 44', 'art 44', 'art 14', 'art 44', 'art 44', 'art 44', 'art 14', 'art 44', 'art 44', 'art 54', 'art 14', 'art 14', 'arts 54', 'arts 54', 'arts 54']

DE10330264B4 - vehicle light - Google Patents
DE10330264B4
DE10330264B4 DE10330264A DE10330264A DE10330264B4 DE 10330264 B4 DE10330264 B4 DE 10330264B4 DE 10330264 A DE10330264 A DE 10330264A DE 10330264 A DE10330264 A DE 10330264A DE 10330264 B4 DE10330264 B4 DE 10330264B4
translucent part
DE10330264A
DE10330264A1 (en
Yasuyuki Shizuoka Amano
Hiroya Shizuoka Koizumi
Yasuo Shizuoka Teranishi
2002-07-04 Priority to JP2002-196595 priority Critical
2002-07-04 Priority to JP2002196595A priority patent/JP4162935B2/en
2003-07-04 Application filed by Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
2004-01-29 Publication of DE10330264A1 publication Critical patent/DE10330264A1/en
2009-01-08 Publication of DE10330264B4 publication Critical patent/DE10330264B4/en
A vehicle lamp (10) having a light source (12) aligned with the front of the lamp and a translucent member (14) arranged to allow light exiting the light source (12) to be incident on the lamp transparent part (14), and is adapted to reflect backward that light originating from the light source (12) and entering the translucent part (14), through a front surface (14A) of the translucent one Part (14), and then the light by means of a rear surface (14B) of the translucent part (14) reflects, so that this leaves the front of the lamp (10) from the translucent part (14), wherein
an area on the front surface (14A) of the transparent part (14) located near the optical axis (Ax) of the light source (12) is formed as a normal reflecting portion (14A1) whose surface has been treated that it reflects and that the light in ...
The The present invention relates to a vehicle lamp, comprising a LED (a light-emitting diode) is equipped. More specifically the invention a vehicle lamp, which is provided with an LED, and a normal reflection section and a section with internal reflection, which then when combined with several Reflection elements are used in several configurations are arranged to serve the reflection and the emitted light to control.
For some time, numerous vehicle lights are used, which are provided with an LED. In this context, the describes JP 61-153201 U a vehicle lamp provided with an LED light source facing in the forward direction of the vehicle lamp. Furthermore, a translucent member is arranged so that the light emanating from the LED light source is caused to enter the translucent member. The light emitted from the LED light source and entered into the translucent member is reflected backward by a front surface of the translucent member. The light reflected back in this way is then reflected forward by a rear surface so that the light from the translucent part leaves the luminaire in the forward direction.
A Such vehicle light can with the help of the internal reflection light reflect backwards into the translucent part at a great angle with respect to an optical axis of the LED light source, So a certain amount of light coming from the LED light source has gone out and into the front surface of the translucent part has come in. For the light that enters the translucent part at a small angle with respect to the optical axis, however, there is one Angle of incidence that is less than or equal to a critical angle is. Therefore, the light can not go backwards due to internal reflection be reflected.
As this is described in the Japanese Patent Publication, can if an area on the front surface the translucent Part, the nearby the optical axis lies as a recessed portion with a wedge-shaped Profile is provided in the cross-sectional direction, that of the LED light source outgoing light causes it to be on the wedge-shaped, recessed portion at an angle exceeding the critical angle. Therefore, the light emanating from the LED light source can be efficiently used as Illuminating light of the luminaire can be used.
If Such a design of a lamp is used, however, occurs an overlap between a surface on the back surface the translucent Part, where the light comes in, the inside of the wedge-shaped, recessed portion and a surface the front surface of the translucent part on, at which the light comes in, the inside on surfaces with the exception of the wedge-shaped, excluded section (so generally reflected Light). Is the geometry of the back surface of the translucent part chosen so that a proper control the reflection of the generally reflected light occurs the difficulty on that the reflection of the at the wedge-shaped recess reflected light can not be properly controlled.
The EP 1 167 870 A2 describes a lamp for vehicles with a light source, a reflector and a light-guiding element, which has a light exit surface on a front side and a reflection surface on a rear side. The light exit surface of the light guide is formed as part of the lens of the lamp.
The Invention has been developed for the purpose of this in the prior art to overcome existing problems and its object is to provide a vehicle lamp, which is provided with an LED light source, and an efficient Use of the light allows that emanates from the LED light source, as a luminaire illumination light, and proper control the luminaire lighting light allows.
This The aim is according to the invention achieved in that the formation of a front surface of a translucent Part selected accordingly becomes.
More specifically, the invention provides a vehicular lamp having a light source, preferably an LED light source aligned with the front of the luminaire, and a translucent member arranged to cause light emanating from the LED light source to enter the translucent part and formed to reflect backward the light originating from the LED light source and entering the translucent part, through a front surface of the translucent part, and then the light is reflected by a rear surface of the translucent member, thereby causing the light to come out from the front side of the luminaire from the translucent member, wherein
an area on the front surface of the translucent part, which is near the optical Is arranged axis of the LED light source, is formed as a normal reflective portion, in which a treatment of the reflective surface has been made, and a portion of the front surface of the transparent part except the normal reflective portion is formed as an internally reflecting portion, the going out LED light, which has gotten into the translucent part, caused to be internally reflected; and where
a plurality of reflecting members are provided on the rear surface of the translucent member so that the outgoing LED light reflected from the front surface is reflected so as to be incident to the internal reflection portion having an incident angle smaller than or equal to the critical one Angle is.
in this connection can, in that the normally reflective section and the internally reflective section consist of continuous, curved surfaces, the area on the back surface of the translucent part, in which the light reflected from the normal reflecting portion got in, and the area on the back surface, in which the light enters, that in the internally reflecting Section was reflected internally, juxtaposed, without an overlap or a separation exists. This can eliminate the risk that a dark spot or the like on the back surface of the translucent Partly occurs when viewed from the front of the vehicle lamp off when the LED light source is lit.
in this connection is the term "vehicle light" not on a vehicle light limited to a specific type. The vehicle lamp may be, for example, a tail lamp, a brake light, or another light.
Furthermore is the term "translucent part" not to a specific one Limited material, as far as the material forms a part that is translucent. For example, a material made of transparent material can be used Resin or glass.
It There are no special restrictions with respect to the area in which the "normal reflecting section" and the "internally reflecting section" are provided, and no special shapes are required for the layers.
In Reference to the respective "reflection elements" is the shape of the reflective surface is not limited to a special form, as far as the reflection surface reflects the light that emanated from the LED light source, and from the front surface the translucent Partly reflected, making it into the section with internal reflection with an angle of incidence, which is less than or equal to the critical angle. So, for example a reflection element can be used, which is just a common reflection of the light causes that from the front surface of the translucent part emanates. Alternatively, a reflection element can be used, which is formed so that it from the front surface of the translucent part diffusely reflected.
As clear from the above should be, is a vehicle lamp according to the invention formed so that a translucent part is arranged so that there is light that emanates from an LED light source that goes to the front the lamp is directed, caused, in the translucent part to get into it, so that in the translucent part went into it Light leaving the part, through a front surface is reflected to the rear, and then forward through a rear surface is reflected, so that it from the translucent part of the lamp in the forward direction leaves. An area on the front surface of the translucent part, the nearby the optical axis of the LED light source is arranged as formed normally reflecting portion in which a processing or treatment of the reflective surface was performed. An area of the front surface the translucent Part except the normal reflecting section is as formed internally reflecting portion of the outgoing LED light that has entered the translucent part, caused to be reflected internally. Several reflection elements are on the back surface of the translucent part provided to the outgoing LED light coming from the front surface the translucent Part was reflected, so to reflect it in the section with internal reflection at an angle of incidence, the is less than or equal to the critical angle. Therefore, let yourself achieve the following effects.
Even if the normal reflective portion, in which a treatment of the reflective surface has been performed, is arranged so that the light, which has emanated from the LED light source, and has entered the translucent part, so in the normal reflective portion with a If the angle of incidence is less than or equal to the critical angle, the light can be reflected without error. Therefore, the geometry of the surface of the normal reflecting portion can be freely selected. Therefore, the area on the rear surface of the translucent part, in which the light reflected by the normal reflecting portion enters, and the area on the back surface in which the light internally reflected at the internally reflecting portion enters is selected so as not to overlap with each other. The control of the reflection can therefore be performed properly with the aid of a rear surface of the translucent part.
According to the invention allows hence the vehicle lamp, which is provided with an LED light source is, an efficient use of the light coming from the LED light source as a lighting illumination light, as well as a proper control of the Lights lighting light.
As mentioned above, There are no special restrictions in terms of the geometry of the surface of the normally reflective Section and the internally reflective section. Provided, the normal reflecting portion is formed as a substantially funnel-shaped, curved surface is that is rotationally symmetric to the optical axis, and the internally reflective portion as a substantially annular, dome-like, curved surface is formed, which is rotationally symmetrical to the optical axis, let to have the following effects.
specially The light that emanates from the LED light source can pass through the front surface the translucent Part about the entire circumference of the optical axis are reflected to thereby to cause the light to enter a rear surface of the translucent Part of getting into it. Therefore, a wide lighting area be ensured with the help of a single LED light source. About that In addition, the LED light source can be placed in the center of the luminaire so that the outer shape the lamp chosen freely can be.
The following Effects can be achieved by the position of a borderline between the normal reflecting section and the internally reflecting section Section is set to a position at which the angle of incidence of the light emanating from the LED light source, essentially becomes equal to the critical angle.
If the vehicle light is viewed from the front while the LED light source lights up, the normal reflective section looks dark, in which a treatment of the reflective surface was performed. Therefore, the area of the normal reflecting portion at a treatment of the reflective surface is performed, preferably minimized. Because of this, if the position of the Boundary line between the normal reflecting section and the internally reflecting section is set to a position at which the angle of incidence of the light emanating from the LED light source and in the front surface the translucent Part in, essentially equal to the critical angle is, the normal reflecting portion have a minimum size, wherein the light that emanates from the LED light source, from the front surface the translucent Partly reflected back so that practically no light get lost.
In Regarding the configuration is pointed out that then, if the multiple reflection elements on the back surface of the translucent part are provided, disposed at positions behind the luminous center of the LED light source are arranged, the LED light source and this holding substrate so that can be they do not matter much the rear surface of the translucent Partial project, whereby the lamp are made slim can.
The The invention will be described below with reference to drawings explained in more detail, from which results in further advantages and features. It shows:
1 a front view of a vehicle lamp according to an embodiment of the invention;
2 a cross-sectional view taken along the line II-II in 1 ;
3 a detail view of a section of in 2 illustrated vehicle lamp (Part 1);
4 a detail view of a section of in 2 shown vehicle lamp (Part 2);
5 a front view of the vehicle lamp in the on state;
6 a similar view as 4 showing a translucent part according to a first modification of the embodiment;
7 a similar view as 4 wherein a translucent member according to a second modification of the embodiment is shown;
8th a similar view as 4 wherein a translucent member according to a third modification of the embodiment is shown;
9 a similar view as 5 showing a translucent member according to a fourth modification of the embodiment; and
10 a similar view as 5 , wherein a translucent member according to a fifth Modification of the embodiment is shown.
1 is a front view of a vehicle lamp according to an embodiment. 2 is a cross-sectional view taken along the line II-II of 1 , The 3 and 4 are detailed views of an in 2 shown section.
The 3 and 4 are detailed views of an in 2 shown section.
The illustrated vehicle lamp 10 According to the embodiment, a tail lamp provided in a rear end portion of a vehicle and an LED light source 12 and a translucent part 14 having.
The LED light source 12 is oriented towards the front of the lamp (ie, rearward with respect to the vehicle, and this also applies to any counterparts in the following description) so that an optical axis Ax is aligned with the center axis of the lamp extending in the longitudinal direction of the vehicle , The LED light source 12 has an LED main body (LED chip) 12A on, and a plastic or a resin 12B for sealing, the luminous center O of the LED main body 12A covers. The LED light source 12 is on a substrate 16 attached.
The translucent part 14 is a substantially dome-shaped product formed of transparent resin (for example, an acrylic resin molded product) arranged to be the LED light source 12 covering from the front. The translucent 14 Reflects that light to the rear, that of the LED light source 12 stems, and in the translucent part 14 came in, with the help of a front surface 14A of the translucent part 14 , Then the light is reflected forward through a rear surface 14B of the translucent part 14 so it's from the translucent part 14 comes out to the front of the lamp.
A light incidence recess 14a is in the center of the rear mold surface 14B of the translucent part 14 provided so that by the LED light source 12 outgoing light (also referred to as "outgoing LED light") in the translucent part 14 enters.
An area on the front surface 14A of the translucent part 14 which is located near the optical axis Ax is a normal reflecting portion 14A1 formed in which by treatment of aluminum, a treatment of the surface has been made so that it reflects. An area on the front surface 14A of the translucent part 14 with the exception of the normal reflective section 14A1 is as internally reflective section 14A2 trained so that the outgoing LED light entering the translucent part 14 has come in, is reflected internally.
The normal reflective section 14A1 is formed as a substantially funnel-shaped, curved surface which is formed rotationally symmetrical to the optical axis Ax. The internally reflective section 14A2 is formed as a substantially annular, dome-like, curved surface which is rotationally symmetrical to the optical axis Ax. The normal reflective section 14A1 and the internally reflective section 14A2 are formed as continuous, curved surfaces. The position of the boundary line L is chosen such that an angle of incidence θ, with which the outgoing LED light on the front surface 14A of the translucent part 14 is substantially equal to a critical angle of incidence (about 42 °).
In the embodiment, the direction of the normal is on the boundary line L of the front surface 14A of the translucent part 14 chosen so that it is parallel to the optical axis Ax. Therefore, the angle existing between the outgoing LED light incident at the position of the boundary line and the optical axis Ax becomes equal to the incident angle θ of the outgoing LED light on the boundary line L.
In the embodiment, the cross-sectional profile of the normal reflecting portion 14A1 within a plane in which the optical axis Ax lies, selected as a parabola, with the luminous center O as the focal point. The cross-sectional profile of the internally reflecting section 14A2 within this plane is hyperbolic, with the luminous center O as the focal point.
How out 3 shows off the outgoing LED light coming from the front surface 14A of the translucent part 14 the outgoing LED light is reflected from the normally reflecting section 14A1 is reflected, in an inner peripheral portion 14B1 the back surface 14B of the translucent part 14 into it. The outgoing LED light coming from the internally reflecting section 14A2 is reflected, enters an outer peripheral portion 14B2 the rear mold surface 14B of the translucent part 14 ,
An annular recess 14b is around the Lichteinfallsausnehmung 14a the back surface 14B of the translucent part 14 trained around. Furthermore, several reflection elements 14s around the annular recess 14b around seen. The reflection elements 14s are arranged at equal intervals, and in the form of a sawtooth-like pattern in a plane orthogonal to the optical axis Ax, behind the luminous center O of the LED light source 12 lies, leaving the rear surfaces 14B of the translucent part 14 are separated in the radial direction and concentrically. At an area on the back surface 14B of the translucent part 14 with the exception of the Lichteinfallsausnehmung 14a For example, a treatment is performed to provide a reflective surface, for example, by deposition of aluminum.
Each of the reflection elements 14s has a convex curved surface having a predetermined curvature in the radial direction and circumferential direction with respect to the optical axis Ax. As in 4 shown is that of the front surface 14A of the translucent part 14 outgoing LED light diffused and is reflected in the radial direction and circumferential direction with respect to the optical axis Ax. Here, the geometry of the surface of each of the reflection elements 14s chosen so that the outgoing LED light coming from the front surface 14A of the translucent part 14 is reflected, is caused to the internally reflecting section 14A2 with an angle of incidence which is less than or equal to the critical angle, by the reflection effect of the reflection elements 14s ,
5 is a front view of the vehicle lamp 10 according to this embodiment, when the LED light source 12 shines.
As shown, when the vehicle light 10 viewed from the front, the plurality of reflection elements 14s which the rear surface 145 of the translucent part 14 form, so that they shine at the same time, as spreading points. In this case, each of the reflection elements 14s a convex curved surface. Sections substantially in the center of the respective reflection elements 14s therefore shine bright, as dazzling bright sections B1, B2. The light exit of the from the inner peripheral portion 14B1 the back surface 14B of the translucent part 14 reflected light is larger than the light from the outer peripheral area 14B2 is reflected. Therefore, the dazzling bright portions B1 of the inner peripheral portion are seen 14B1 so that they shine brighter than the bright sections B2 of the outer peripheral area 14B2 ,
Even if the observation point deviates slightly from the forward direction of the luminaire, the sections of the reflective elements will see 14s which lie outside the center, still so that they shine as the dazzling bright sections B1, B2, according to the extent of the movement of the observation point, since the respective reflection elements 14s have a convexly curved shape.
As explained in detail above, the vehicle lamp is 10 According to the embodiment, formed such that the translucent part 14 is arranged so that it is that of the LED light source 12 , which is directed towards the front of the luminaire, causes outgoing light to enter the translucent part 14 to get into it; and so that the outgoing LED light entering the translucent part 14 got in, backwards through the front surface 14A is reflected, and again in the forward direction through the rear surface 14B is reflected, leaving it from the translucent part 14 comes out of the front of the lamp. The area on the front surface 14A of the translucent part 14 which is near the optical axis Ax is considered to be the normal reflecting portion 14A1 is formed, in which a treatment to achieve a reflective surface has been performed. The area on the front surface 14A with the exception of the normal reflective section 14A1 is as the internally reflective section 14A2 trained so that the outgoing LED light entering the translucent part 14 has come in, is reflected internally. The multiple reflection elements 14s are on the back surface 14B of the translucent part 14 so provided that from the front surface 14A of the translucent part 14 Reflected, outgoing LED light is caused to enter the internally reflective section 14A2 with an angle of incidence less than or equal to the critical angle. This leads to the following effects.
Even if the outgoing LED light is made to go to the section 14A1 With normal reflection incident at an angle of incidence which is less than or equal to the critical angle, the normal reflecting section can 14A1 in which the surface has been treated to reflect, to reflect the incident light without error. Therefore, the surface geometry of the section 14A1 be freely selected with normal reflection. Therefore, the back surface 14B of the translucent part 14 be easily formed so that the occurrence of an overlap between an area, in which the light enters, that of the normally reflecting portion 14A1 was reflected (ie the inner peripheral area 14B1 ) and the area where the light reflected internally at the internal reflection portion (that is, the outer peripheral area) is avoided 14B2 ) entry. Therefore, the back surface 14B of the translucent part 14 a suitable Perform a control operation.
at the embodiment The outgoing LED light can be used efficiently as a luminaire lighting light be used.
The Control of the luminaire illumination light can be done in a suitable way and manner performed become.
In particular, in the embodiment, the normal reflecting portion 14A1 from the substantially funnel-shaped, curved surface, which is rotationally symmetrical to the optical axis Ax. The internally reflective section 14A2 is formed by a substantially annular, dome-like, curved surface which is rotationally symmetrical to the optical axis Ax. This leads to the following effects.
The outgoing LED light can be on the front surface 14A of the translucent part 14 be reflected over the entire circumference of the optical axis Ax. The LED light can then be made to enter the back surface 14B enter. Therefore, a wide lighting range can be achieved with the help of only one LED light source 12 be ensured. Because the LED light source 12 can be arranged in the center of the lamp, the outer shape of the lamp can be chosen freely.
In the embodiment, the normal reflecting portion 14A1 and the internally reflective section 14A2 formed by continuous surfaces. Therefore, the area on the back surface 14B of the translucent part 14 into that of the normal reflecting section 14A1 reflected light enters, and the area on the back surface 14B of the translucent part 14 into which the light enters, the internally on the internally reflecting section 14A2 reflected, juxtaposed, without the occurrence of a separation or an overlap. This can eliminate the risk that a portion in the form of a dark spot or the like will occur, which would otherwise be the case when the vehicle lamp 10 viewed from the front while the LED light source 12 shines.
Here, in the embodiment, the position of the boundary line L is between the normal reflecting portion 14A1 and the internally reflective section 14A2 set to a position at which the angle of incidence θ of the outgoing LED light entering the front surface 14A of the translucent part 14 has come in, essentially becomes a critical angle. The outgoing LED light will pass through the front surface 14A of the translucent part 14 reflected without substantial light loss to the rear, so that the size of the normal reflective section 14A1 a minimal size can be.
In the embodiment, the plurality of reflection elements 14s on the back surface 14B of the translucent part 14 are provided, disposed at a position which is located further back than the luminous center O of the LED light source 12 , The LED light source 12 and the substrate 16 that the LED light source 12 holds, can be arranged so that they from the rear surface 14B of the translucent part 14 do not protrude significantly to the rear. Therefore, the lamp can be made compact.
In the embodiment, the direction of the normal is on the boundary line L of the front surface 14A of the translucent part 14 specified to be parallel to the optical axis Ax. However, this is not essential. The determination of the direction can be made according to the dimensions of the lamp or the like, as is most appropriate.
In the embodiment, the cross-sectional profile of the normal reflecting portion 14A1 within the plane containing the optical axis Ax, chosen parabolic, with the luminous center O as the focal point. The cross-sectional profile of the internally reflecting section 14A2 within the plane is chosen hyperbolic, with the luminous center O as the focal point. However, other cross-sectional profiles can be used.
When next will be a first change the embodiment described.
6 is a similar view as 5 , and shows a translucent part 24 according to the embodiment.
As shown, the translucent part is different 24 from the translucent part 14 in the sense that the formation of a Lichteinfallsausnehmung 24a from that of the light incident recess 14a of the translucent part 14 is different according to the embodiment.
In detail, the Lichteinfallsausnehmung 24a of the translucent part 24 cylindrical, wherein the cylinder has a bottom. A transparent filler 26 is between the Lichteinfallsausnehmung 24a and the sealing resin 12B the LED light source 12 filled. The filler 26 is made of synthetic resin material whose refractive index is substantially equal to that of the transparent part 24 is. The outgoing LED light propagates straight through the translucent part 24 over the filler 26 from the luminous center of the LED light source 12 out.
The normal reflective section 24A1 and the internally reflective section 24A2 , both the front surface 24A of the translucent part 24 form, and the multiple reflection elements 24s on the back surface 24B of the translucent part 24 are provided are identical in shape with the shape of the corresponding parts of the translucent part 14 according to the embodiment.
Even if the training according to the amendment is used the same effects as in the embodiment can be achieved.
In the modification is the filler 26 which has substantially the same refractive index as the translucent part 24 between the Lichteinfallsausnehmung 24a and the sealing resin 12b the LED light source 12 filled, whereby substantially the occurrence of a refraction at an interface between the filler 26 and the translucent part 24 is prevented. Therefore, the shape of Lichteinfallsausnehmung 24a of the translucent part 24 be chosen freely. In the modification, the Lichteinfallsausnehmung 24a a simple shape, for example the shape of a bottomed cylinder. Of course, the Lichteinfallsausnehmung but also have a different shape.
When next will be a second modification of embodiment described.
7 is a 4 corresponding view and shows a translucent part 34 according to the second amendment.
As shown, the translucent part is characterized 34 characterized in that a Lichteinfallsausnehmung 34a is formed differently than the Lichteinfallsausnehmung 14A of the translucent part 14 according to the embodiment.
In particular, the translucent part 34 designed so that the Lichteinfallsausnehmung 34a in close contact with the sealing resin 12B the LED light source 12 is brought. The outgoing LED light propagates radially in a straight line within the translucent part 14 from the luminous center O of the LED light source 12 out.
The normal reflective section 34A1 and the internally reflective section 34A2 Both have a front surface 34A of the translucent part 34 form, as well as several reflective elements 34s standing on a back surface 34B of the translucent part 34 are provided, have exactly the same shape as the corresponding parts in the translucent part 14 according to the embodiment.
Even if the training according to the second amendment is used the same effects as in the embodiment can be achieved.
Furthermore, in the modification, the Lichteinfallsausnehmung 34a of the translucent part 34 designed so that they are in close contact with the sealing resin 12B the LED light source 12 stand. Therefore, the translucent part 34 be made simply by molding or the like.
In addition, the positional accuracy of the translucent part 34 be improved.
When next becomes a third amendment the embodiment described.
8th is a similar view as 4 and shows a translucent part 44 according to the third amendment.
As shown, there is the translucent part 44 in one piece from sealing resin 12B (please refer 4 ), so as to the LED main body 12A the LED light source 12 seal. A Lichteinfallsausnehmung, for example, the Lichteinfallsausnehmung 14a (please refer 4 ) of the translucent part 14 , which has been described in connection with the embodiment, is not provided. The outgoing LED light propagates in the radial direction in a straight line from the luminous center O of the LED light source 12 within the translucent part 44 out.
The normal reflective section 44A1 and the internally reflective section 44a2 Both have a front surface 44A of the translucent part 44 form, and the multiple reflection elements 44s standing on a back surface 44B of the translucent part 44 are provided are of exactly the same shape as the corresponding parts of the translucent part 14 according to the embodiment.
Even if the training according to the third amendment is used the same effects as in the embodiment can be achieved.
In the present modification is the translucent part 44 in one piece from the sealing resin 12B the LED light source 12 made, which allows a reduction in the number of parts, and the positional accuracy of the translucent part 44 improved.
When next become a fourth and a fifth amendment the embodiment described.
The 9 and 10 are similar views as 5 and show a translucent part 54 respectively. 64 according to the amendments.
As shown, the translucent parts are characterized 54 . 64 according to the fourth or fifth modification characterized in that a plurality of reflection elements 54s . 64s on the back surface 54B respectively. 64B are arranged, unlike the translucent part 14 are arranged according to the embodiment.
Like the translucent part 14 According to the embodiment, the translucent parts 54 . 64 designed so that rear surfaces 54B . 64B are separated in the radial direction and concentrically. reflecting elements 54s . 64s are the respective rear surface 54B respectively. 64B assigned. Here, in the fourth modification, the respective reflection elements 54s offset by a half pitch in the circumferential direction based on the radial partition pitch. In the fifth modification, the reflection elements 64s offset by a dividing pitch in the radial direction based on the pitch distance in the circumferential direction.
The reflection elements 54s . 64s each have a convexly curved surface with a predetermined radial curvature and a radial curvature in the circumferential direction with respect to the optical axis Ax. In this regard, the modifications correspond to the embodiment. Regarding the formation of the translucent parts 54 . 64 the translucent parts are formed as well as in the embodiment, with the exception of the reflection elements 54s . 64s ,
If the translucent parts 54 . 64 viewed from the front while the LED light source 12 lights, lights the centers of the respective reflection elements substantially 54s . 64s which the rear surface 54B respectively. 64B form, as dazzling bright sections B1, B2. The reflection elements 54s . 64s are arranged differently than in the embodiment. The modifications may therefore provide an appearance different from the appearance of the embodiment.
In the embodiment and the modifications, a case has been described in which the vehicle lamp 10 a tail light is. Even in cases where the vehicle lamp is not a tail lamp (for example, a brake lamp, a rear / stop lamp, a marker lamp, or a turn signal lamp), a corresponding configuration can be used to that described in connection with the embodiment and the modifications , whereby the same effects as in the embodiment and the amendments can be achieved.
Vehicle light ( 10 ), which is a light source ( 12 ), which is aligned towards the front of the lamp, and a translucent part ( 14 ), which is arranged so that light, which is the light source ( 12 ) leaves to invade the translucent part ( 14 ) and is arranged to reflect backwards that light coming from the light source ( 12 ) and into the translucent part ( 14 ) has entered through a front surface ( 14A ) of the translucent part ( 14 ), and then the light by means of a rear surface ( 14B ) of the translucent part ( 14 ), so that this the front of the lamp ( 10 ) from the translucent part ( 14 ) leaving an area on the front surface ( 14A ) of the translucent part ( 14 ), which is close to the optical axis (Ax) of the light source ( 12 ) is arranged as a normal reflecting section ( 14A1 ), the surface of which has been treated so that it reflects and the light in an inner peripheral portion ( 14B1 ) of the rear surface ( 14B ), and an area of the front surface ( 14A ) of the translucent part ( 14 ) with the exception of the normal reflecting section ( 14A1 ) as an internally reflecting section ( 14A2 ) is formed, the outgoing light, which in the translucent part ( 14 ), caused to be internally reflected, and the light into an outer peripheral portion (FIG. 14B2 ), the normal reflecting section (FIG. 14A1 ) and the internally reflecting section ( 14A2 ) are formed as continuous, curved surfaces and wherein a plurality of reflection elements ( 14s ) on the back surface ( 14B ) of the translucent part ( 14 ) are provided to provide a reflection of the outgoing light coming from the front surface ( 14A ) of the translucent part ( 14 ) so as to cause it to enter the internally reflecting section (FIG. 14A2 ) with an angle of incidence that is less than or equal to the critical angle.
A vehicle lamp according to claim 1, wherein the normal reflecting portion (FIG. 14A1 ) has a substantially funnel-shaped, curved surface, which is rotationally symmetrical to the optical axis (Ax), and the internally reflecting portion ( 14A2 ) has a substantially annular, dome-like, curved surface, the rotation symmetrical to the optical axis (Ax).
A vehicle lamp according to claim 1 or 2, wherein the position of a boundary line (L) between the normal reflecting portion (FIG. 14A1 ) and the internally reflecting section ( 14A2 ) is set to a position at which the angle of incidence of the light emitted by the light source ( 12 ) and into the front surface ( 14A ) of the translucent part ( 14 ), is substantially equal to the critical angle.
A vehicle lamp according to claim 2 or 3, wherein the plurality of reflection elements ( 14s ) at positions behind the luminous center (O) of the light source ( 12 ) are arranged.
Vehicle lamp according to Claim 1 or 4, in which the light source ( 12 ) is an LED light source.
DE10330264A 2002-07-04 2003-07-04 vehicle light Expired - Fee Related DE10330264B4 (en)
JP2002-196595 2002-07-04
DE10330264A1 DE10330264A1 (en) 2004-01-29
DE10330264B4 true DE10330264B4 (en) 2009-01-08
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