JP2008153076A - Vehicular lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decrease the number of components of a vehicular lighting fixture in which the light of an LED is reflected on a reflecting surface. <P>SOLUTION: The lighting fixture comprises a lens block 4 of a single molding where an exposure surface 3a that is exposed outside a car is formed, an LED5 which supplies light into the lens block 4, and a reflecting surface 11 which is formed at the lens block 4 and reflects the light supplied into the lens block 4 from the LED5 toward the exposed surface 3a so that the light is emitted outside the lens block 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicular lamp using an LED (Light Emitting Diode) as a light source.

Examples of vehicle lamps that use LEDs as light sources include high-mount stop lamps, stop lamps, turn signal lamps, and tail lamps. This type of vehicle lamp includes a housing whose inner surface is a reflector, an outer lens that closes the front surface of the housing, an inner lens housed in the housing, and an LED as a light source. A plurality of reflective surfaces for reflecting light from the LED toward the inner lens and the outer lens are formed on the inner surface of the housing in a multifaceted manner. The reflecting surfaces are connected by a non-reflecting surface. (For example, refer to Patent Document 1).
JP 2004-139903 A

  However, such a conventional vehicular lamp requires many parts such as a housing, an inner lens, and an outer lens as lens system members in order to realize a lamp having a plurality of reflective surfaces. There is a problem of doing.

  An object of the present invention is to reduce the number of parts in a vehicular lamp that reflects and irradiates light from an LED with a reflecting surface.

  In the first aspect of the present invention, a lens block that is a single molded product formed with an exposed surface that is exposed outside the vehicle, an LED that supplies light into the lens block, and a substrate on which the LED is mounted. A reflecting surface that is formed on the lens block, reflects light supplied from the LEDs into the lens block to the exposed surface, and irradiates the light to the outside of the lens block, and the exposure on the lens block. A non-transparent surface that is formed to be connected to the reflective surface at a position facing the surface and does not transmit light; and a support piece that is provided on the lens block and supports the substrate by engagement. To do.

  The invention according to claim 2 is characterized in that the LED is mounted on an upper surface of the substrate, and a lower surface of the substrate is covered with a cover.

  The invention according to claim 3 is characterized in that the reflection surface and the non-transmission surface are formed so as to be gradually stepped in the vehicle width direction.

  The invention according to claim 4 is characterized in that the reflecting surface has a diffusing prism shape for diffusing light in the vehicle width direction.

  In the invention according to claim 5, there is an extended portion formed continuously with the exposed surface of the lens block and exposed to the outside of the vehicle, integrally formed with the lens block, and the non-transmissive surface Provided on at least one of the back surface of the extended portion and the back surface of the exposed surface of the extension portion, and an attachment portion fixed to the vehicle body, and the exposed surface and the non-transmissive surface of the extension portion include the exposed surface and the It is characterized by being painted in the same color as the outer surface of the vehicle body around the lens block.

  According to the first aspect of the present invention, since the lens system member of the vehicular lamp is only a lens block that is a single molded product, the number of parts of the vehicular lamp is smaller than a structure in which a plurality of lens system members are provided. . This is advantageous in terms of assembly man-hours and costs. Further, since the non-transmissive surface does not transmit light, it is possible to prevent the inside of the vehicle body from being seen from the non-transmissive surface of the lens block when the LED is not lit. In addition, since the support block that supports the LED substrate is provided on the lens block, the lens block, LED, and substrate can be attached to the vehicle body in a unitized state, and the workability of attaching them to the vehicle body is improved. To do.

  According to the invention of claim 2, since the lower surface of the substrate is covered with the cover, the LED substrate can be protected from water, stones, and the like that jump from the lower side of the vehicle body when the vehicle is running.

  According to the third aspect of the present invention, the reflecting surfaces and the non-transmitting surfaces are gradually formed differently in the vehicle width direction, so that the reflecting surfaces are arranged more three-dimensionally and multifaceted.

  According to the invention of claim 4, since the reflecting surface has a diffusing prism shape that diffuses light in the vehicle width direction, the light is reflected in a state of spreading in the vehicle width direction, and the exposed surface of the lens block has a wider area. Can emit light.

  According to the invention of claim 5, the exposed surface and the non-transparent surface of the extended portion are coated with the same color as the outer surface of the vehicle body around the exposed surface and the lens block, so that the lens block and the periphery thereof are A sense of unity can be obtained. In addition, the same color as the exterior surface of the vehicle body can be seen in the lens block when the LED is not lit because the non-transparent surface is coated with the same color as the exposed surface of the extension and the exterior surface of the vehicle body around the lens block. Therefore, the presence of the vehicular lamp is not so conspicuous, and a sense of unity between the vehicular lamp and its surroundings can be obtained. In addition, the fixing portion that is fixed to the vehicle body is provided on at least one of the back surface of the non-transparent surface coated as described above and the exposed surface of the extended portion, so that the mounting portion cannot be seen from the outside. Excellent appearance quality.

  (First Embodiment) A first embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view of a tail lamp as a vehicular lamp according to the present embodiment as viewed from the outside of the vehicle, FIG. 2 is a perspective view of the opening of the vehicle body outer plate and the tail lamp as viewed from the inside of the vehicle, and FIG. Is a perspective view showing the lens block and the LED, FIG. 4 is an enlarged view showing the back surface of the lens block and the LED, FIG. 5 is an enlarged sectional view of the lens block, and FIG. 6 is a SA-SA line indicated by an arrow in FIG. FIG. 7 is a sectional view of the lens block along, and FIG. 7 is an optical path diagram in the lens block.

  The tail lamp 1 of the present embodiment is disposed at both the left and right ends of the rear surface of the vehicle body. In the present embodiment, only the right side in the vehicle traveling direction will be described as a representative.

  The rear surface portion of the automobile is formed by the vehicle body outer plate 2 with the upper portion slightly inclined forward. A predetermined color coating is applied to the outer surface of the vehicle body outer plate 2. A vehicle width direction W outer side portion of the vehicle body outer plate 2 is slightly curved, and a horizontally long and rectangular opening 3 is formed in that portion.

  A tail lamp 1 is attached in the opening 3. The tail lamp 1 includes a lens block 4 and an LED 5. The lens block 4 is a single molded product made of a transparent resin such as polycarbonate (PC) or cycloolefin polymer (COP) which is a transparent member. The lens block 4 has a rectangular exposed surface 6 that matches the opening 3. The exposed surface 6 is a smooth surface continuous with the outer surface of the vehicle body outer plate 2 and is slightly inclined and curved in accordance with the vehicle body outer plate 2, and is exposed outside the vehicle.

  The lower surface 7 of the lens block 4 has a jagged uneven shape in the vehicle width direction W. Support pieces 8 are respectively formed on both sides of the lower surface 7 in the vehicle width direction so as to face downward. The support piece 8 supports the substrate 10 by engagement. Specifically, a groove portion 9 is formed in the lower part of the opposing surfaces of the support pieces 8 along the front and rear. Both ends of the substrate 10 having a shape that is long in the vehicle width direction W are inserted into the groove 9. A plurality of LEDs 5 arranged in two rows along the vehicle width direction W are mounted on the upper surface of the substrate 10. Therefore, by inserting both ends of the substrate 10 into the groove 9 of the support piece 8, the LED 5 and the substrate 10 are integrated with the lens block 4, and the LED 5 is positioned in an upward state below the lens block 4.

  A plurality of reflective surfaces 11 and a plurality of non-transmissive surfaces 12 are alternately formed on the rear surface side of the lens block 4 in the perspective direction with respect to the LED 5, that is, in the vertical direction.

  The reflecting surface 11 reflects the light L emitted upward from the LEDs 5 at a predetermined irradiation angle to the exposed surface 6 and irradiates the light to the outside of the lens block 4. The plurality of reflective surfaces 11 are arranged obliquely in the vertical direction in a state where they are connected by the non-transmissive surface 12 and are substantially parallel to each other. The reflecting surface 11 has a jagged concavo-convex diffusing prism shape in the vehicle width direction W and is subjected to mirror surface treatment by aluminum vapor deposition or silver coating to efficiently and diffuse the light L toward the exposed surface 6 side. The function of reflecting in the state is given.

  The non-transmissive surface 12 is formed so as to be connected to the reflective surface 11 at a position facing the exposed surface 6. The non-transparent surface 12 is coated with the same color as the coating applied to the outer surface of the vehicle body outer plate 2 that is the outer surface of the vehicle body as an opaque treatment, whereby the non-transparent surface 12 does not transmit the light L.

  The lens block 4 is multifaceted by the fact that the reflection surface 11 subjected to the mirror surface treatment and the non-transmission surface 12 subjected to the opaque treatment are alternately formed and the reflection surface 11 has a diffusing prism shape. It has an optical structure.

  The lens block 4 and the substrate 10 of the LED 5 are unitized as a tail lamp 1, and in a united state, the tail lamp 1 is inserted from the outside of the vehicle body outer plate 2 into the interior from the outside of the vehicle. The tail lamp 1 inserted into the opening 3 is fixed by fastening a mounting hole 13 formed on the side surface of the lens block 4 to a bracket (not shown) on the inner side of the vehicle body. Since the lens block 4 and the substrate 10 of the LED 5 can be unitized through the support piece 8 formed at the lower part of the lens block 4, the mounting workability to the vehicle body is easy. In the fixed state, the exposed surface 6 of the lens block 4 and the outer surface of the vehicle body outer plate 2 are continuous as the same surface.

  In such a configuration, when the LED 5 is turned on, the upward light L emitted from the LED 5 is reflected to the exposed surface 6 in a multifaceted manner by the plurality of reflecting surfaces 11, and from the exposed surface 6 to the outside (rear). Irradiated toward. Since the reflecting surface 11 has a diffusing prism shape, the light L is reflected in a state of spreading in the vehicle width direction W, and the exposed surface 6 of the lens block 4 can emit light over a wide area (see FIG. 6).

  When the LED 5 is not lit, the non-transparent surface 12 of the lens block 4 is not transmitted, so that the inside of the vehicle body cannot be seen through the non-transparent surface 12. Further, since the coating applied to the non-transparent surface 12 is the same color as the outer surface of the vehicle body outer plate 2, the same color as the outer surface of the vehicle body outer plate 2 can be seen in the lens block 4, and the presence of the tail lamp 1 is present. It is not so conspicuous and a sense of unity between the tail lamp 1 and its surroundings can be obtained.

  According to the present embodiment, as described above, since the lens system member of the tail lamp 1 may be only the lens block 4 that is a single molded product, the components of the tail lamp 1 are compared with the structure in which a plurality of lens system members are provided. There are few points. Therefore, it is advantageous in terms of assembly man-hours and costs.

  (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 8 is an exploded perspective view of the tail lamp according to the present embodiment as viewed from the inside of the vehicle, FIG. 9 is an enlarged view showing the back side of the lens block and the LEDs, and FIG. 10 is an enlarged cross-sectional view showing the lens block in the mounted state. It is. Note that the tail lamp according to this embodiment includes the same components as those of the first embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  The tail lamp 14 according to this embodiment is different from the previous embodiment in the structure of the reflective surface 16 and the non-transmissive surface 17 on the back surface side of the lens block 15. The reflective surface 16 is mirror-finished, and the non-transparent surface 17 is coated in the same color as the outer surface of the vehicle body outer plate 2. However, both the reflective surface 16 and the non-transparent surface 17 are predetermined. The difference is that the angled flat shape is formed alternately in the vertical direction, and the reflecting surfaces 16 and the non-transmitting surfaces 17 are formed stepwise in the vehicle width direction W. By forming the reflecting surface 16 in a stepwise manner in the vehicle width direction W, the individual reflecting surfaces 16 are slightly directed toward the center in the vehicle width direction, and the entire lens block 15 is slightly curved outward in the vehicle width direction. However, as each reflective surface 16, it will be in the state which faced the back substantially straight, and the polyhedral structure by the reflective surface 16 becomes further three-dimensional.

  The substrate 10 on which the plurality of LEDs 5 are installed is inserted into the groove portions 19 of the support piece 18 formed at both ends of the lens block 15 in the vehicle width direction. In this embodiment, the lower side and the back side of the substrate 10 of the LED 5 are further provided. A cover 20 having an L-shaped cross section is attached. The cover 20 is fixed by being fastened to a bracket (not shown) inside the vehicle body.

  According to the present embodiment, since the reflecting surface 16 of the lens block 15 is formed in a stepwise manner in the vehicle width direction W, a three-dimensional polyhedral structure can be realized by the plurality of reflecting surfaces 16, and the planar surface on the substrate 10 can be realized. The light of the LEDs 5 arranged in a three-dimensional manner can be reflected three-dimensionally and irradiated to the outside.

  Moreover, since the lower side and the back side of the board 10 of the LED 5 are covered with the cover 20 having an L-shaped cross section, it is a measure for waterproofing the board 10 against water splashing from the lower side of the vehicle body during traveling or the like.

  (Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 11 is an exploded perspective view of the tail lamp according to the present embodiment as viewed from the inside of the vehicle, and FIG. 12 is an enlarged cross-sectional view showing the lens block in an attached state. The tail lamp according to this embodiment includes the same components as those of the second embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  The tail lamp 21 according to the present embodiment is integrally formed with four upper and lower mounting pieces 23 and 24 (a total of eight) projecting horizontally from the non-transmissive surface 17 of the lens block 22. These attachment pieces 23 and 24 are attachment parts fixed to the vehicle body. Engaging claws 25 and 26 are formed at the tips of the mounting pieces 23 and 24. The attachment piece 23 on the upper side is formed longer than the attachment piece 24 on the lower side, and the front and rear positions of the engaging claws 25 and 26 of the attachment pieces 23 and 24 are the same. The coating treatment of the non-transmissive surface 17 is performed in a state including the mounting pieces 23 and 24.

  On the vehicle body side located inside the opening 3 in the vehicle body outer plate 2, engagement receiving portions 27 are formed at positions corresponding to the attachment pieces 23 and 24, respectively. Accordingly, by setting the tail lamp 21 in which the substrate 10 of the LED 5 and the lens block 22 are integrated into the opening 3 of the vehicle body outer plate 2 from the outside of the vehicle, the engaging claws 25 and 26 of the mounting pieces 23 and 24 are respectively set. The tail lamp 21 is fixed by engaging with the corresponding engagement receiving portion 27. Therefore, according to the present embodiment, since the attachment is completed simply by setting the tail lamp 21 in the opening 3, the attachment workability is good.

  Moreover, according to this embodiment, since the attachment pieces 23 and 24 are formed in the non-transmissive surface 17 by which the coating process was carried out, when the LED5 is not lighted, it cannot be seen from the outside. Therefore, the appearance quality is excellent. And since the attachment pieces 23 and 24 are formed only in the non-transmissive surface 17, the optical performance by the reflective surface 16 is not affected.

  (Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a perspective view of the tail lamp according to the present embodiment as viewed from the outside of the vehicle, FIG. 14 is a perspective view of the opening of the vehicle body outer plate and the tail lamp as viewed from the inside of the vehicle, and FIG. FIG. 16 is a cross-sectional view showing the tail lamp, and FIG. 16 is a plan view of the tail lamp mounting portion as seen from above. The tail lamp according to this embodiment includes the same components as those of the second embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  In the tail lamp 28 according to the present embodiment, extended portions 31 are integrally formed above and below the lens block 29. The extended portion 31 is formed with an exposed surface 31a that is formed continuously with the exposed surface 30 of the lens block 29 and is exposed to the outside of the vehicle. The exposed surface 31a of the extended portion 31 is coated with the same color as the exposed surface 31a and the outer surface of the vehicle body around the lens block 29 (the outer surface of the vehicle body outer plate 33). In addition, two pedestals 34 are integrally formed on the back surfaces of the upper and lower extension portions 31 in the vehicle width direction W, and attachment bolts 35 as attachment portions are respectively formed by insert molding. The lower extension 31 is also integrated with the support piece 32 of the lens block 29.

  The vehicle body outer plate 33 is formed with an opening 36 that is enlarged in accordance with the extended portion 31. Fixing portions 38 each having a bolt hole 37 are formed at positions corresponding to the mounting bolts 35 on the vehicle body side inside the opening 36.

  In such a configuration, after the substrate 10 of the LED 5 is inserted into the groove 39 formed in the support piece 32 of the lens block 29 to form the tail lamp 28 in which the substrate 10 and the lens block 29 are unitized, the tail lamp If the 28 is set from the outside of the vehicle into the opening 36 of the vehicle body outer plate 33, the mounting bolt 35 of the expansion portion 31 is inserted into the bolt hole 37 of the fixing portion 38, the tail lamp 28 is positioned, and the expansion portion 31 is exposed. The surface 3a and the outer surface of the vehicle body outer plate 33 are substantially continuous. In this state, the nut 40 is fastened to the mounting bolt 35 from the back side of the fixing portion 38, and the lens block 29 having the expansion portion 31 is fixed. As described above, when the tail lamp 28 is set in the opening 36, the positions of the extended portion 31 and the lens block 29 are determined simply by inserting the mounting bolt 35 into the bolt hole 37 of the fixing portion 38. Is good.

  When the lens block 29 having the extended portion 31 is fixed in the opening 36 of the vehicle body outer plate 33, the extended portion 31 having the same color as the outer surface of the vehicle body outer plate 33 is integrally formed above and below the lens block 29. Therefore, the extended portion 31 looks like the vehicle body outer plate 33. Therefore, it is possible to obtain a sense of unity between the lens block 29 and its surroundings.

  Furthermore, since the mounting bolt 35 is provided on the back surface of the extended portion 31 that has been painted in the same color as the vehicle body outer plate 33, the mounting bolt 35 is not visible from the outside and has excellent appearance quality.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made.

  For example, in each of the above-described embodiments, the horizontally long vehicle lamp is taken as an example, but the present invention is not limited to this. Moreover, although LED5 was arrange | positioned under the lens block 4 grade | etc., And the light L of LED5 was supplied into the lens block 4 grade | etc., From the lower surface 7 grade | etc., Lens block 4 grade | etc., It is not limited to this, For example, The LED may be arranged beside the lens block, and the LED light may be supplied into the lens block from the side surface of the lens block. In this case, the reflection surface and the non-transmission surface of the lens block are alternately formed in the horizontal direction.

  Moreover, although the said 4th Embodiment demonstrated the example which provided the attaching part (attachment bolt 35) fixed to a vehicle body in the back surface of the exposed surface 31a of the expansion part 31, it is not limited to this, An attaching part is The lens block 29 may be provided on the back surface of the non-transmissive surface 17, or may be provided on both the back surface of the non-transmissive surface 17 and the back surface of the exposed surface 31 a of the extended portion 31.

The perspective view which looked at the attachment state of the tail lamp which is a vehicle lamp which concerns on 1st Embodiment of this invention from the vehicle outer side. The perspective view which looked at the opening part and tail lamp of a vehicle body outer plate from the vehicle inside. The perspective view which shows a lens block and LED. The enlarged view which shows the back surface and LED of a lens block. The expanded sectional view of a lens block. FIG. 6 is a cross-sectional view of a lens block taken along line SA-SA in FIG. The optical path diagram in a lens block. The disassembled perspective view which looked at the tail lamp which concerns on 2nd Embodiment of this invention from the vehicle inner side. The enlarged view which shows the back surface side and LED of a lens block. The expanded sectional view which shows the lens block of an attachment state. The disassembled perspective view which looked at the tail lamp which concerns on 3rd Embodiment of this invention from the vehicle inner side. The expanded sectional view which shows the lens block of an attachment state. The perspective view which looked at the attachment state of the tail lamp which concerns on 4th Embodiment of this invention from the vehicle outer side. The perspective view which looked at the opening part and tail lamp of a vehicle body outer plate from the vehicle inside. Sectional drawing which shows the tail lamp of an attachment state. The top view which looked at the attaching part of a tail lamp from the top.

Explanation of symbols

L light W vehicle width direction 1, 14, 21, 28 Tail lamp (vehicle lamp)
4, 15, 22, 29 Lens block 5 LED
6, 30 Exposed surface of lens block 8, 18, 32 Supporting piece 9, 19, 39 Groove 10 Substrate 11, 16 Reflecting surface 12, 17 Non-transparent surface 20 Cover 23, 24 Mounting piece (mounting portion)
31 Extension part 31a Exposed surface of extension part 35 Mounting bolt (mounting part)

Claims (5)

A lens block that is a single molded product with an exposed surface exposed outside the vehicle;
An LED for supplying light into the lens block;
A substrate on which the LED is mounted;
A reflecting surface that is formed on the lens block, reflects the light supplied from the LEDs into the lens block to the exposed surface, and irradiates the light to the outside of the lens block;
A non-transmissive surface that is formed by connecting to the reflective surface at a position facing the exposed surface in the lens block, and does not transmit light;
A support piece provided on the lens block and supporting the substrate by engagement;
A vehicular lamp characterized by comprising: The LED is mounted on the upper surface of the substrate,
The vehicular lamp according to claim 1, wherein a lower surface of the substrate is covered with a cover.   The vehicular lamp according to claim 1, wherein the reflection surface and the non-transmission surface are formed so as to be gradually different in a vehicle width direction.   The vehicular lamp according to any one of claims 1 to 3, wherein the reflecting surface has a diffusing prism shape that diffuses light in a vehicle width direction. An extended portion formed continuously with the exposed surface of the lens block and exposed to the outside of the vehicle, and formed integrally with the lens block;
A mounting portion provided on at least one of the back surface of the non-transmissive surface and the back surface of the exposed surface of the extension portion, and fixed to the vehicle body;
With
The exposed surface and the non-transparent surface of the extension part are coated with the same color as the exposed surface and the outer surface of the vehicle body around the lens block. The vehicle lamp as described in 2.

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