JP2016207509A - Lighting appliance for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting appliance for a vehicle which is reducible in size.SOLUTION: In a lighting appliance 1 for a vehicle which comprises a plurality of LEDs (light sources) 3, and a plurality of reflectors 5 for reflecting light emitted from the LEDs 3, a plurality of the reflectors 5 are arranged in a step shape so that a part of the reflector and a part of the adjacent reflector are overlapped on each other in left and right directions. Then, the plurality of the reflectors 5 are arranged in a step shape so that a part of the reflector and a part of the adjacent reflector are overlapped on each other in up-and-down and fore-and-aft directions. Furthermore, in each reflector 5, a light distribution pattern having an expansion at only a single side in the left and right directions is formed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicular lamp including a plurality of reflectors.

  Some vehicle lamps such as headlamps arranged on the left and right of the front part of a vehicle include a plurality of light sources and a plurality of reflectors that reflect light emitted from each light source. A wide light emitting area can be secured. With respect to this type of vehicle lamp, Patent Document 1 proposes the one shown in FIG.

  That is, FIG. 7 is a plan sectional view of the vehicular lamp proposed in Patent Document 1, and the illustrated vehicular lamp 101 includes a plurality of stepped reflectors 105 that also serve as a housing and a stepped outer lens that covers the opening. A plurality of LEDs (not shown) corresponding to the plurality of reflectors 105 are arranged in the lamp chamber S defined by the above.

  In such a vehicular lamp 101, when an electric current is supplied to each LED and the LED emits light, the light is reflected by the reflecting surface 105a of each reflector 105, passes through the transparent outer lens 113, and forwards the vehicle (see FIG. 7).

JP 2012-174640 A

  However, in the vehicle lamp 101 lost in FIG. 7 proposed in Patent Document 1, a plurality of reflectors 105 are arranged in a step shape without overlapping so as not to impede each other's performance. There is a problem that the vehicle lamp 101 becomes large.

  The present invention has been made in view of the above problems, and an object thereof is to provide a vehicular lamp that can be reduced in size.

  In order to achieve the above object, the invention according to claim 1 is a vehicle lamp comprising a plurality of light sources and a plurality of reflectors for reflecting light emitted from each light source. It is characterized by being arranged in a staircase shape so that a part thereof overlaps in the left-right direction.

  A second aspect of the invention is characterized in that, in the first aspect of the invention, the plurality of reflectors are arranged in a staircase pattern so that a part of adjacent ones overlap in the vertical and front-back directions.

  A third aspect of the invention is characterized in that, in the first or second aspect of the invention, each of the reflectors forms a light distribution pattern having a spread only on one side in the left-right direction.

  According to the first and second aspects of the present invention, the plurality of reflectors are arranged in a step-like manner so that a part of the adjacent ones overlaps in the left-right direction. The lamp can be miniaturized.

  According to the third aspect of the present invention, each reflector forms a light distribution pattern having a spread only on one side in the left-right direction, so that the light distribution performance of other reflectors adjacent thereto is not hindered.

It is a perspective view of the vehicular lamp main part concerning the present invention. It is a disassembled perspective view of the vehicle lamp principal part which concerns on this invention. It is a front view of the vehicular lamp principal part concerning the present invention. It is a top view of the vehicular lamp principal part concerning the present invention. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is the BB sectional view taken on the line of FIG. It is a plane sectional view of the vehicular lamp proposed in patent documents 1.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a perspective view of a main part of a vehicular lamp according to the present invention, FIG. 2 is an exploded perspective view of the main part of the vehicular lamp, FIG. 3 is a front view of the main part of the vehicular lamp, and FIG. FIG. 5 is a cross-sectional view taken along the line AA in FIG. 3, and FIG. 6 is a cross-sectional view taken along the line BB in FIG.

  The vehicular lamp 1 according to the present embodiment is used as a headlamp disposed on the left and right of the front portion of the vehicle, and the basic configuration of the left and right headlamps is the same. Only the lamp 1 is shown and described.

  As shown in FIGS. 1 to 4, the vehicular lamp 1 according to the present embodiment includes three reflective lamp units 2 arranged side by side in the horizontal direction. Here, each lamp unit 2 reflects the LED 3 (see FIG. 5) which is a light source, a rectangular flat board 4 on which the LED 3 is mounted on the lower surface, and light emitted downward from the LED 3 to the front of the vehicle. A reflector 5 is provided. Although not shown, the three lamp units 2 are accommodated in a lamp chamber defined by a transparent outer lens covering the housing and the front opening thereof.

  In each lamp unit 2, the substrate 4 is positioned and fixed on the upper surface of the reflector 5. That is, as shown in FIGS. 1 to 5, positioning pins 6 are erected integrally at three locations on the upper surface of the reflector 5, and three locations on the substrate 4 (three locations corresponding to the positioning pins 6 of the reflector 5). ) Is formed with a circular positioning hole 7. Therefore, when the three positioning pins 6 provided on the upper surface of the reflector 5 are fitted into the three positioning holes 7 formed in the substrate 4 and the substrate 4 is placed on the upper surface of the reflector 5, the substrate 4 is It is accurately positioned on the upper surface of the reflector 5. And if the board | substrate 4 is adhere | attached on the upper surface of the reflector 5 from this state with an adhesive agent etc. with high heat conductivity, this board | substrate 4 will be fixed in the state positioned on the upper surface of the reflector 5. FIG. The LED 3 is mounted on the lower surface of the substrate 4 so that the light emission direction is downward. The substrate 4 and the reflector 5 may be fixed by screws, heat caulking, or the like in addition to bonding with an adhesive.

  By the way, each reflector 5 is integrally formed of resin, and includes a reflecting portion surface 5a that curves in a paraboloid. And as shown in FIG. 5, the opening part 5b for the light radiate | emitted below from LED3 to pass through is formed in a part of upper wall of each reflector 5. As shown in FIG. Note that the reflection surface 5a of the reflector 5 is subjected to a reflection process such as aluminum vapor deposition.

  Each reflector 5 is rotatably supported on the upper surface of a bracket 8 integrally formed in a rectangular frame shape with resin. That is, as shown in FIGS. 2 and 6, a cylindrical bearing portion 5 </ b> A is integrally projected downward from the center portion of the upper wall of the reflector 5. Each reflector 5 is supported on the upper surface of the bracket 8 so as to be horizontally rotatable around the boss 8 </ b> A by being fitted to the outer periphery of a cylindrical boss 8 </ b> A standing upright integrally with the upper surface.

  As shown in FIGS. 2, 4, and 6, hooks 9 bent in an inverted L shape are integrally formed on the left and right sides of the rotation center of each reflector 5. An engaging claw 9a is formed. Further, as shown in FIGS. 2 and 4, an operation pin 10 is erected integrally with a rear end side of each reflector 5, and an arcuate screw insertion hole 11 is formed.

  On the other hand, as shown in FIGS. 2 and 6, there are two left and right portions of the upper surface of the bracket 8 where the reflectors 5 are supported (two locations corresponding to the hooks 9 formed on the left and right sides of the reflectors 5). A long hole-shaped guide hole 12 is formed. In addition, as shown in FIG. 2, screw bosses 8B are integrally formed at one place on the back side of the portion of the upper surface of the bracket 8 where each reflector 5 is supported (where the screw insertion hole 11 of the bracket 8 is formed). A screw hole 8a (see FIG. 4) is formed at the center of each screw boss 8B. The left and right hooks 9 of each reflector 5 are passed through the guide holes 12 of the bracket 8 from above, and the engaging claws 9a at the tips of the hooks 9 engage with the guide holes 12 as shown in FIG. As a result, each reflector 5 can rotate horizontally in either direction around the boss 8A of the bracket 8 as long as each hook 9 can move in the guide hole 12.

  Thus, in the vehicular lamp 1 configured as described above, when a current is supplied to the LED 3 of each lamp unit 2 from a power source (not shown) such as a battery, the LED 3 is activated and emits light. Exits downward as shown in FIG. Then, the light emitted downward from the LED 3 passes through the opening 5b of the reflector 5 and is reflected to the front of the vehicle (left side in FIG. 5) by the reflecting surface 5a, and passes through a transparent outer lens (not shown). Since the vehicle lamp 1 is irradiated forward, the vehicle lamp 1 functions as a headlamp.

  By the way, in the vehicular lamp 1 according to the present embodiment, each reflector 5 is supported so as to be rotatable about the boss of the bracket 8 as the center of 8A, and therefore each reflector 5 is centered on the boss 8A with respect to the bracket 8. By rotating, the optical axis of each lamp unit 2 can be adjusted. The optical axis of each lamp unit 2 is adjusted by operating an operation pin 10 erected at one location on the back side of each reflector 5 to rotate each reflector 5 by a predetermined angle around the boss 8A of the bracket 8. Made by.

  Then, after adjusting the optical axis of each lamp unit 2, a screw boss 8 </ b> B (not shown) that is erected at one place on the back side of each bracket 5 is inserted into a screw insertion hole 11 of each reflector 5. 2), each reflector 5 is fixed to the bracket 8 by being screwed into the screw hole 8a (see FIG. 4). At this time, as shown in FIG. 6, the engaging claws 9 a at the tips of the left and right hooks 9 of each reflector 5 are engaged with the guide holes 12 of the bracket 8. The dropout is surely prevented.

  Thus, in the vehicular lamp 1 according to the present embodiment, each of the reflectors 5 of the three lamp units 2 arranged in parallel in the lateral direction has a part of the adjacent ones as shown in FIG. They are arranged stepwise so as to overlap each other by x in the left-right direction and by y in the height direction. Further, as shown in FIG. 4, the reflectors 5 of the three lamp units 2 are arranged in a staircase pattern so that a part of the adjacent ones overlap each other by z shown in the front-rear direction.

  Here, the amount of left-right overramp x between adjacent ones of the three reflectors 5 arranged side by side in the lateral direction is equal to that of the upright wall 5c of the other reflector 5 adjacent to the side surface 5d of the upright wall 5c of one reflector 5. The distance between the side surface 5d. For this reason, it arrange | positions so that the side surface 5d of the standing wall 5c of one reflector 5 may pass the standing wall 5c of the other adjacent reflector 5, and may cover the reflective surface 5a.

  Moreover, the over-ramp amount y in the height direction between adjacent ones of the three reflectors 5 arranged side by side in the horizontal direction is equal to the upper surface part 5f of one reflector 5 and the upper surface part 5f of the other reflector 5 adjacent to each other. Is the distance between. For this reason, the upper surface portion 5f of the other adjacent reflector 5 is disposed above the thickness of the upper surface portion 5f of one reflector 5 and the thickness of the substrate 4 combined.

  Furthermore, the over-ramp amount z in the front-rear direction between adjacent ones of the three reflectors 5 arranged side by side in the lateral direction is the reflection surface of the other reflector 5 adjacent to the tip portion 5g of the reflection surface 5a of one reflector 5. This is the distance between the tip 5g of 5a. For this reason, the front-end | tip part 5g of the reflective surface 5a of the other reflector 5 adjacent is arrange | positioned about the width | variety of the reflective surface 5a from the front-end | tip part 5g of the reflective surface 5a of one reflector 5. FIG.

  By the way, it goes without saying that the overlap amounts x, y, and z in the left and right and up and down and front and rear directions can be appropriately changed. However, the overlap amount z in the front and rear direction widens the width of the vehicular lamp 1. This Z may be the distance from the LED 3 to the tip 5g of the reflector 5, and may be set shorter. On the contrary, if the outer lens has a design that is largely inclined in the front-rear direction, the overlap amount z can be larger than the value of the present embodiment. It is not restricted to the reflective surface width of the reflector 5 like this.

Therefore, according to the vehicular lamp 1 according to the present embodiment, the three reflectors 5 juxtaposed in the horizontal direction are stepped so that a part of adjacent ones overlaps by x in the left-right direction. Due to the arrangement, the width of the vehicular lamp 1 can be reduced by 2x. In this case, in the present embodiment, the three reflectors 5 overlap each other by 2y in the vertical direction and overlap by 2z in the front-rear direction. Therefore, these reflectors 5 are not changed without changing the shape of each reflector 5. Can be overlapped by x in the left-right direction, and the vehicular lamp 1 including the three reflectors 5 can be reduced in width by 2x.
In the present embodiment, the three reflectors 5 are arranged so that adjacent ones overlap each other by x, y, and z in the left-right direction, the up-down direction, and the front-rear direction. Even if it arrange | positions so that it may overlap only in a direction, the width dimension of the vehicle lamp 1 can be reduced and size reduction can be achieved.

  By the way, in the vehicular lamp 1 according to the present embodiment, each reflector 5 of the three lamp units 2 arranged in parallel in the left-right direction has a light distribution pattern having a spread only on one side in the left-right direction as shown in FIG. The reflecting surface 5a is configured so as to form Therefore, each reflector 5 does not hinder the light distribution performance of other reflectors 5 adjacent thereto, and the vehicular lamp 1 can exhibit a desired light distribution performance.

  In the above, the embodiment in which the present invention is applied to a vehicular lamp used as a headlamp has been described. However, the present invention is similarly applied to a vehicular lamp used for any other purpose. Of course, it is possible.

  The present invention can also be applied to a low beam lamp unit and a high beam lamp unit, and in particular, an auxiliary lamp capable of irradiating the lateral side of the vehicle outside that forms a light distribution pattern having a spread only on one side in the left-right direction. It is suitable for a side illumination ADB lamp unit having an ADB (Adaptive Driving Beam) function for illuminating a side outside the vehicle outside an independent high beam irradiation range.

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Lamp unit 3 LED (light source)
4 Substrate 5 Reflector 5a Reflector surface 6 Positioning pin 7 Positioning hole 8 Bracket 9 Hook 10 Operation pin 11 Screw insertion hole 12 Guide hole x Reflector's left and right overramp amount y Reflector's up and down direction overlamp amount z Reflector's Amount of overramp in the front-rear direction

Claims (3)

In a vehicle lamp comprising a plurality of light sources and a plurality of reflectors for reflecting light emitted from each light source,
A vehicular lamp characterized in that a plurality of the reflectors are arranged in a stepped manner so that a part of adjacent ones overlaps in the left-right direction.   The vehicular lamp according to claim 1, wherein the plurality of reflectors are arranged in a staircase shape so that a part of adjacent ones overlaps in the vertical and front-back directions. 3. The vehicular lamp according to claim 1, wherein each of the reflectors forms a light distribution pattern having a spread only on one side in the left-right direction.

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