JP2010192320A - Vehicular lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture capable of preparing and assembling a light-emitting element in a simple structure along a sharp-pointed three-dimensional streamline shape. <P>SOLUTION: In the vehicular lighting fixture formed by storing LED modules (light-emitting element modules) M1-M3 constituted by connecting a plurality of LEDs (light-emitting elements) 7 between a pair of bus bars 11a, 11b made of metal sheets, a bracket 6 for retaining the LED modules M1-M3, and a reflector for reflecting light emitted from the LED 7 in a lamp chamber partitioned by a lens with three-dimensional curved surface for covering a housing and its opening, the LED modules M1-M3 are formed by preparing the LEDs 7 on respective step sections of the bus bars 11a, 11b which are molded by bending at a linear stage shape along an inner surface of the lens, first and second two sets of LED modules M1, M2 are arranged separated from each other, and these LED modules M1, M2 are connected with the third LED module M3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicular lamp formed by arranging a plurality of sets of light emitting element modules along an inner surface of a lens having a three-dimensional curved surface.

  In a vehicular lamp such as a tail lamp or a stop lamp, a light emitting element module, a bracket that holds the light emitting element module, and a light emitting element are emitted from a light chamber defined by a lens that covers a housing and an opening of the housing. Some are configured to accommodate a reflector that reflects light. Here, the light-emitting element module as a light source of such a vehicle lamp has a plurality of light-emitting elements such as LEDs connected and arranged at a predetermined interval between a pair of thin metal plate bus bars arranged in parallel to each other. It is constituted by. In such a light emitting element module, when a driving voltage is applied between a pair of bus bars, the driving voltage is supplied to each light emitting element through the connection lead, and each light emitting element emits light.

  By the way, in a vehicular lamp designed for a vehicle body whose front end or rear end is narrowed down, the lens has a complicated three-dimensional curved surface. In such a case, the light emitting element module is mounted on the inner surface of the lens. It is necessary to arrange the light emitting element module busper in a step shape along the inner surface shape of the lens and arrange the light emitting element on the step (flat part). The structure which does is employ | adopted (for example, refer patent document 1).

JP 2000-260206 A

In recent years, there are cases where the lamp is molded into a three-dimensional streamline with a sharp point due to the design relationship. There is no problem.
The present invention has been made in view of the above circumstances, and an object thereof is a vehicle lamp that can arrange and assemble light emitting elements with a simple configuration along a sharp three-dimensional streamline shape. It is to provide.

  In order to achieve the above object, a first aspect of the present invention provides a plurality of light emitting elements between a pair of thin metal plate bus bars in a lamp chamber defined by a lens having a three-dimensional curved surface covering a housing and its opening. In a vehicular lamp configured to accommodate a light emitting element module formed by connecting a light emitting element module, a bracket that holds the light emitting element module, and a reflector that reflects light emitted from the light emitting element, along the inner surface of the lens The light emitting element is configured by arranging the light emitting element at each step portion of the bus bar that is bent into a linear staircase, and at least the first and second sets of light emitting element modules are separated from each other. The light-emitting element modules are connected to each other by a third light-emitting element module.

  According to a second aspect of the present invention, in the first aspect of the invention, the plurality of light emitting elements of the light emitting element module are arranged on two curves that intersect at an acute angle when viewed in the light emission direction. And

  The invention according to claim 3 is the bracket according to claim 1 or 2, wherein the light emitting element is arranged on the light emitting element module so that a light emitting direction thereof is a vehicle width direction and the light emitting element module is held. Is attached to the reflector from the vehicle width direction.

  According to the present invention, a light emitting element is arranged at each step portion of a busper that is bent in a straight staircase shape along the inner surface of a lens having a three-dimensional curved surface shape to constitute a light emitting element module, and at least the first And the second two sets of light emitting element modules are spaced apart from each other and the light emitting element modules are connected to each other by the third light emitting element module. It can be arranged and assembled along the original streamline shape.

1 is a front view of a vehicular lamp according to the present invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a disassembled perspective view of the vehicle lamp which concerns on this invention. It is a perspective view of the LED module of the vehicle lamp which concerns on this invention, and the bracket holding this. It is a perspective view of the LED module of the vehicle lamp which concerns on this invention. It is a perspective view of the bracket of the vehicle lamp which concerns on this invention. It is a side view of the bracket of the vehicle lamp which concerns on this invention. It is a perspective view of the reflector of the vehicular lamp which concerns on this invention. It is a front view of the reflector of the vehicle lamp which concerns on this invention. It is a perspective view of the inner lens of the vehicle lamp which concerns on this invention. It is a front view of the inner lens of the vehicular lamp according to the present invention.

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

  1 is a front view of a vehicular lamp according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, FIG. 3 is a cross-sectional view taken along line BB of FIG. 5 is a perspective view of the LED module and a bracket holding the LED module, FIG. 6 is a perspective view of the LED module, FIG. 7 is a perspective view of the bracket, FIG. 8 is a side view of the bracket, and FIG. 10 is a front view of the reflector, FIG. 11 is a perspective view of the inner lens, and FIG. 12 is a front view of the inner lens. In each figure, the front direction (X direction) indicates the rear of the vehicle (light irradiation direction of the vehicle lamp) in a state in which the vehicle lamp is attached to the rear of the vehicle, and the left direction (Y direction) indicates the vehicle. The left side when viewed from the front is shown, and the upward direction (Z direction) indicates the upper side of the vehicle.

  A vehicular lamp 1 according to the present invention is a rear combination lamp, and as shown in FIGS. 2 to 4, a light source is provided in a lamp chamber 4 defined by an outer lens 3 that covers a housing 2 and an opening thereof. A certain bulb 5 and three sets of first to third LED modules M1, M2, and M3 (see FIGS. 5 and 6), and a block-shaped bracket 6 that holds these LED modules M1 to M3 (see FIGS. 7 and 8). Reference), the bulb 5, the reflector 8 for reflecting the light emitted from the bulb 5, and the light emitted from the plurality of LEDs 7 (see FIGS. 1 and 5) mounted on the LED modules M1 to M3, respectively. A reflector 9 for reflection (see FIGS. 9 and 10) and an inner lens 10 (see FIGS. 11 and 12) covering the emission side of the reflector 9 are accommodated. The vehicle lamps 1 are arranged on the left and right sides of the rear part of the vehicle, respectively. However, these vehicle lamps 1 are symmetrical and have the same basic configuration. Only the combination lamp 1 will be described.

  Thus, the vehicular lamp 1 according to the present embodiment is assembled to the rear right end of the vehicle body, the rear end of which is narrowed down, and the bulb 5 and the reflector 8 housed in the interior lamp chamber constitute a turn signal lamp. The three LED modules M1 to M3, the bracket 6, the reflector 9, and the inner lens 10 constitute a tail and stop lamp.

  The housing 2 is integrally formed of resin, and its opening is covered with the outer lens 3 having a three-dimensional curved surface. Here, the outer lens 3 is formed of a transparent translucent resin and constitutes a part of the vehicle body. In FIG. 4, reference numeral 11 denotes a reflex reflector (retroreflector) formed of a red translucent resin.

  The bracket 6 is integrally formed of resin. As shown in FIG. 5, the first, second, and third sets of LED modules M1, M2, and M3 are attached thereto. The bracket 6 is formed in a step shape as shown in FIGS. 7 and 8, and is provided with a step group M61 for mounting the LED module M1, a step group M62 for mounting the LED module M2, and an LED module M3. At least three step groups of the step group M63 are formed such that each step portion (a flat surface facing the front direction of the bracket 6) is parallel as shown in FIG. As a result, when the LED modules M1, M2, and M3 are attached to the step groups M61, M62, and M63, they can be assembled from the same bracket front direction (rightward in FIG. 8), and workability is improved. Further, when the bracket 6 is assembled to the reflector 9 as will be described later, it is possible to assemble the bracket 6 so as to face each other.

  Here, in each of the three sets of LED modules M <b> 1 to M <b> 3, a total of 12 LEDs 7, which are four light emitting elements, are provided, and each LED 7 has a light emission direction of each step group M <b> 61 of the bracket 6. , M62, and M63 are arranged with the optical axes of all the LEDs 7 in parallel so as to be in the direction orthogonal to the vehicle, that is, the rear of the vehicle. In particular, each LED 7 used in each LED module M1, M2, M3 on a module basis is attached to the flat part of the bus bars 11a, 11b with the optical axis direction aligned, so the LED 7 in each LED module M1, M2, M3. The accuracy of the mounting angle is improved. The bracket 6 holding the three sets of LED modules M1 to M3 is attached to the reflector 9 from the inner side in the vehicle width direction.

  By the way, as shown in FIGS. 4 and 9 to 12, the reflector 9 and the inner lens 10 have a shape that is narrowed toward the inner side (right side) in the vehicle width direction, that is, a tertiary with their tips 9 a and 10 a pointed. It is molded in the original streamline shape, and the bracket 6 is assembled from the inside in the vehicle width direction.

  As shown in FIG. 10, the reflector 9 includes a reflecting surface 9b corresponding to each LED 7 and each opening 9c into which the LED 7 is inserted, and an aluminum reflecting film is deposited on the reflecting surface 9b. Each reflecting surface 9b is a rotating paraboloid reflecting surface whose focal position is the position of the LED 7 corresponding to each reflecting surface 9b, and the light emitted from each LED 7 is directed rearward (X direction). Let it be parallel light going.

  Moreover, between the adjacent reflective surfaces 9b, each reflective division is divided by the partition plate 9d. The opening 9c is provided on the inner side (right side) in the vehicle width direction, that is, on the wall surface 9e on the left side in FIG. A bracket 6 to which three sets of LED modules M1, M2, and M3 are attached is attached to the reflector 9 from the tip end portion 9a side. Thereby, each LED 7 can be inserted and arranged at the focal position of each reflecting surface 9 b provided on the reflector 9.

  Further, as shown in FIG. 9, when the rear surface 9f of the wall surface 9e formed in the opening 9c of the reflector 9 is aligned with the bracket 6 and the reflector 9 with a boss set at a predetermined position and fixed with screws. The openings 9c into which the LEDs 7 arranged in a staircase shape can be inserted are formed into a three-dimensional curved surface along curved lines (C1 and C2 to be described later), and are formed with a thin wall along the streamline shape of the reflector 9. Yes. Accordingly, it is possible to reduce the weight and the cost by omitting the use of an extra molding material, such as providing a step portion by aligning the back surface 6f of the reflector 9 with the step of the bracket 6.

  The inner lens 10 covers the exit side of the reflector 9 as described above, and as shown in FIGS. 11 and 12, the inner lens 10 is narrowed toward the inner side (right side) in the vehicle width direction as in the reflector 9. That is, the tip 10a is formed into a sharp three-dimensional streamline.

  Further, as shown in FIGS. 5 and 6, the three sets of LED modules M1 to M3 are a pair formed by bending along the inner surface of the outer lens 3 that forms a three-dimensional curved surface in a linear step shape. LED 7 is attached to each step portion (flat surface facing outward in the vehicle width direction) of each of the bus bars 11a and 11b (shown by hatching in FIG. 5). Here, each pair of bus bars 11a and 11b is made of a thin metal plate such as a phosphor bronze plate plated with nickel, for example, and the LED 7 is coupled therebetween. Specifically, each LED 7 is assembled by caulking or the like with connection leads 12a and 12b extending from the bottom surface to both sides at opposite positions of the bus bars 11a and 11b. In the present embodiment, a so-called cannonball-type LED 7 that has a high luminance in the front direction and irradiates the surrounding light is used as the light source. Thus, when the LED 7 is inserted from the lateral direction (left direction in FIG. 10) with respect to the reflective surface 9b of the reflector 9, not only the direction of the reflective surface 9b facing the LED 7 (right direction on the paper in FIG. 10) but also the LED 7 It is possible to effectively capture the light directed from the head toward the peripheral direction (the right direction in the drawing in FIG. 10) to be light directed toward the irradiation direction of the vehicular lamp 1. In addition, you may use arbitrary arbitrary light emitting elements other than LED7 as a light source.

  Incidentally, as shown in FIG. 5, the first to third sets of LED modules M <b> 1 to M <b> 3 correspond to the shape of the reflector 9 in the front view (rear view of the vehicle), that is, from the LED 7 in correspondence with the sharp streamlined shape. The first LED module M1 and the second LED module M2 are spaced apart from each other in the vehicle width direction.

  Specifically, the first LED module M1 is disposed offset from the second LED module M2 by a distance δ illustrated inward in the vehicle width direction, and these first and second LED modules are arranged. The tips of M1 and M2 are connected by a third LED module M3. The first LED module M1 and the second LED module M2 are electrically and mechanically connected to each other by screws 13 and fixed to the bracket 6. The first LED module M1 and the third LED module M3 is connected to the bracket 6 by being electrically and mechanically connected to each other by screws 14.

  By configuring as described above, a total of twelve LEDs 7 respectively mounted on the first to third LED modules M1 to M3 are viewed in the light emission direction (viewed in the vehicle side direction) as shown in FIG. Are arranged on two curves C1 and C2 that intersect at an intersection P at an acute angle.

  Thus, as shown in FIG. 2, the light L1 emitted outwardly in the vehicle width direction from the LEDs 7 (only one is shown in FIG. 2) mounted on the LED modules M <b> 1 to M <b> 3 is shaped like an arc curved surface of the reflector 9. Is reflected by the reflecting surface 9b and the direction thereof is changed by 90 °, passes through the outer lens 3, and is irradiated toward the rear of the vehicle. The light L2 emitted from the bulb 5 shown in FIGS. 2 and 3 is reflected by the reflecting surface 8a of the reflector 8, passes through the outer lens 3, and is irradiated toward the rear of the vehicle.

  As described above, in the vehicular lamp 1 according to the present embodiment, the LED 7 is provided at each step portion of the bus bars 11a and 11b that are formed in a linear step shape along the inner surface of the outer lens 3 having a three-dimensional curved surface shape. The three first to third LED modules M1 to M3 are arranged, and the first and second two LED modules M1 and M2 are spaced apart from each other in the vehicle width direction, and these LED modules M1 are arranged. , M2 are connected to each other by the third LED module M3, and a total of twelve LEDs 7 respectively mounted on the first to third LED modules M1 to M3 are intersected in the light emission direction view (vehicle side direction view). Since they are arranged on two curves C1 and C2 that intersect at an acute angle with P, a plurality of LEDs 7 are arranged in a simple configuration to follow the shape of the reflector 9 and have a sharp three-dimensional flow. It can be arranged and assembled along the shape.

  The present invention can be applied to any vehicle lamp such as a headlamp, a fog lamp, a backup lamp, a vehicle width lamp, a direction indicator lamp, and a stop & tail lamp.

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Housing 3 Outer lens (lens)
4 Light chamber 5 Valve 6 Bracket 7 LED (light emitting element)
8 reflector 8a reflector reflective surface 9 reflector 9a reflector tip 9b reflector reflector 9c reflector opening 9d reflector partition plate 9e reflector wall 9f reflector back surface 10 inner lens 10a inner lens tip 11 reflex reflector 11a, 11b Bus bar 12a, 12b LED connection lead 13, 14 Screw C1, C2 Curve L1, L2 Light M1-M3 LED module (light emitting element module)
M61 LED module M1 step group of bracket M62 LED module M2 step group of bracket M63 LED module M3 step group of bracket P Intersection of curves δ Offset amount of LED module

Claims (3)

A light-emitting element module in which a plurality of light-emitting elements are connected between a pair of metal thin bus bars in a lamp chamber defined by a housing and a lens having a three-dimensional curved surface covering the opening; In a vehicular lamp configured to contain a holding bracket and a reflector that reflects light emitted from the light emitting element,
The light-emitting element module is configured by disposing the light-emitting element on each step portion of the busper that is bent in a straight staircase shape along the inner surface of the lens, and includes at least first and second sets of light-emitting elements. A vehicular lamp characterized in that the modules are arranged apart from each other, and the light emitting element modules are connected to each other by a third light emitting element module.   The vehicular lamp according to claim 1, wherein the plurality of light emitting elements of the light emitting element module are arranged on two curves that intersect at an acute angle when viewed in the light emission direction.   2. The light emitting element is disposed on the light emitting element module so that a light emitting direction thereof is a vehicle width direction, and the bracket for holding the light emitting element module is attached to the reflector from the vehicle width direction. Or the vehicle lamp of 2.

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