JP2014038722A - Vehicular lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture which is compactly configured in depth, makes a tilted light-emission surface suitably emit light, and saves a cost as compared with a conventional one.SOLUTION: A vehicular lighting fixture 1 includes: a plurality of LEDs 42,... respectively emitting light to a front side, and diagonally aligned in a front view; a plurality of first reflection surfaces 52a,... (a plurality of reflecting portions 50,...) diagonally aligned in the front view corresponding to the plurality of LEDs 42,..., individually arranged in front of the plurality of LEDs 42,..., and individually reflecting the light emitted from the plurality of LEDs 42,... to a right side; and a second reflection surface 6a disposed on a right side of the plurality of first reflection surfaces 52a,..., having a left end portion diagonally formed in the front view corresponding to the alignment of the plurality of first reflection surface, and reflecting the light reflected by the plurality of first reflection surfaces 52a,... to the front side.

Description

  The present invention relates to a vehicular lamp.

  2. Description of the Related Art Conventionally, as a vehicular lamp such as various signal lamps for automobiles, a lamp having a compact depth is known by reflecting and radiating light emitted from a lateral light source forward ( For example, see Patent Documents 1 and 2).

  In general, in this type of vehicle lamp, as shown in FIG. 3, light emitted from a light source 82 mounted on a substrate 81 to the side (left in FIG. 3) is collected by a lens 83. Then, the light is reflected forward by the reflector 84.

  Further, in this type of vehicle lamp, when it is desired to expand the light emitting surface in the vertical direction while tilting the light emitting surface in the left-right direction, the light emitting unit including the light source 82, the lens 83, and the reflector 84 emits light as shown in FIG. A plurality of lines are arranged in the vertical direction while being shifted in the left-right direction according to the inclination of the surface. In this case, the lens 83 and the reflector 84 are integrated by the same components, and the plurality of light sources 82 are mounted on the same substrate 81.

JP 2003-59313 A JP 2010-192331 A

  However, in the above conventional vehicle lamp, the positions of the plurality of light sources 82 are different from each other in the light emitting direction (left and right direction), so that the substrate 81 on which the plurality of light sources 82 are mounted is stepped. It becomes a thing. Therefore, it is necessary to use a more expensive flexible substrate as the substrate 81 rather than a rigid flat plate, resulting in an increase in cost.

  The present invention has been made in view of the above circumstances, and is a vehicular lamp that can be made compact in depth and can emit light on an inclined light-emitting surface while reducing the cost as compared with the related art. Offering is an issue.

In order to solve the above problems, the present invention is a vehicle lamp,
Each emits light forward, and a plurality of light sources arranged obliquely in front view;
Corresponding to the plurality of light sources, they are arranged obliquely in front view while being individually arranged in front of the plurality of light sources, and individually reflect the light emitted from the plurality of light sources in a vertical direction substantially perpendicular to the front-rear direction. A plurality of first reflecting surfaces to be caused;
The plurality of first reflecting surfaces are arranged in the vertical direction, and an end opposite to the vertical direction is formed obliquely in front view corresponding to the arrangement of the plurality of first reflecting surfaces, A second reflection surface that reflects light reflected by the plurality of first reflection surfaces forward;
It is characterized by providing.

  According to the present invention, the light emitted forward from the plurality of light sources is individually reflected in the vertical direction substantially perpendicular to the front-rear direction by the plurality of first reflection surfaces arranged in front thereof, and then the second reflection. Since the light is reflected forward by the surface, the depth of the lamp in the front-rear direction can be made compact.

  Further, the plurality of light sources and the plurality of first reflection surfaces correspond to each other and are arranged obliquely in front view, and the end of the second reflection surface also corresponds to the arrangement of the plurality of first reflection surfaces in front view. Therefore, the light reflected by the end portion of the second reflecting surface is directed forward obliquely in front view, so that the inclined light emitting surface can be suitably illuminated.

  In addition, since the light emitted from the plurality of light sources is individually reflected in the vertical direction by the plurality of first reflecting surfaces arranged in front of the plurality of light sources, the plurality of light sources are related to the inclined array in the front view. In other words, the positions in the front-rear direction, which is the light emission direction, can be aligned. Therefore, a rigid flat plate can be used as a substrate on which the plurality of light sources are mounted, and the cost can be reduced as compared with the conventional case where a more expensive flexible substrate has to be used.

It is a disassembled perspective view of the vehicle lamp in embodiment. It is a transverse cross section of the important section of the vehicular lamp in an embodiment. It is a cross-sectional view of the principal part of the conventional vehicle lamp. It is a front view of the principal part of the conventional vehicle lamp.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a vehicular lamp 1 according to the present embodiment, and FIG. 2 is a cross-sectional view (a cross-sectional view perpendicular to the vertical direction) of the main part of the vehicular lamp 1.
In the following description, “front”, “rear”, “left”, “right”, “upper”, and “lower” refer to the direction viewed from the vehicular lamp 1 unless otherwise specified. .

  As shown in FIG. 1, the vehicular lamp 1 includes a housing 2 whose front surface is open, and a transparent outer lens 3 that covers the front opening of the housing 2. The front surface of the outer lens 3 is a light emitting surface 3a that emits light from the inside of the lamp, and the left end portion thereof is inclined obliquely to the lower left.

Inside the lamp chamber formed by the housing 2 and the outer lens 3, a light source unit 4, a first reflector 5, a second reflector 6, and an inner lens 7 are accommodated.
Among these, the light source unit 4 has a flat printed board 41 on which a large number of electronic components (not shown) are mounted. This printed circuit board 41 is erected substantially vertically in the front-rear direction, and is formed in a shape in which the left end is inclined obliquely to the lower left as in the front of the outer lens 3. Are mounted with a plurality of LEDs (light emitting diodes). The plurality of LEDs 42,... Are obliquely arranged so as to be inclined obliquely to the lower left when viewed from the front, following the left end portion of the printed circuit board 41. Each of the LEDs 42 is provided forward so as to emit light forward. ing.

  As shown in FIGS. 1 and 2, the first reflector 5 is disposed in front of the left end portion on which the plurality of LEDs 42,. The first reflector 5 includes a plurality of reflecting portions 50,... That integrally reflect light emitted from the LEDs 42,. The plurality of reflecting portions 50,... Are individually arranged in front of the plurality of LEDs 42,... Corresponding to the plurality of LEDs 42,. ing.

  Each reflecting portion 50 includes a back plate portion 51 and a curved plate portion 52 that extends obliquely forward to the right from the left end of the back plate portion 51. Among these, the back plate portion 51 is formed with a through-hole 51a penetrating in the front-rear direction, and the LED 42 corresponding to the reflecting portion 50 faces from the rear in the through-hole 51a. On the other hand, the curved plate portion 52 is formed in a concave plate shape that opens to the right rear so as to cover the front of the LED 42 facing the inside of the through hole 51a, and the inner surface (rear surface) thereof becomes the first reflecting surface 52a. Yes. The first reflecting surface 52a is formed, for example, in the shape of a rotating paraboloid focusing on a position near the LED 42, and reflects light emitted forward from the LED 42 to the right.

  The second reflector 6 is disposed in front of the printed circuit board 41 and to the right of the first reflector 5, and the left end of the second reflector 6 is an array of a plurality of reflecting portions 50,... (First reflecting surfaces 52a,...). Correspondingly, it is formed in a staircase shape that inclines stepwise to the lower left obliquely in front view. The front surface of the second reflector 6 is a second reflecting surface 6a, and is formed in a shape that is gently inclined forward toward the right. The second reflection surface 6a is located to the right of the plurality of first reflection surfaces 52a,... Of the first reflector 5, and the light reflected rightward by the plurality of first reflection surfaces 52a,. Reflect forward.

  The inner lens 7 is formed in substantially the same front view shape as the second reflector 6, and is disposed in front of the second reflector 6 so as to cover the second reflecting surface 6a. The inner lens 7 has a fine cut on the front surface thereof, so that unevenness is reduced in the light reflected forward by the second reflecting surface 6a of the second reflector 6 and incident on the inner lens 7. The light is emitted forward while being diffused.

  In the vehicular lamp 1 having the above configuration, the light emitted forward from the plurality of LEDs 42 of the light source unit 4 is individually provided for each LED 42 by the plurality of first reflecting surfaces 52a of the first reflector 5. After being reflected rightward, it is reflected forward by the second reflecting surface 6a of the second reflector 6. Then, this light is emitted forward while being diffused through the inner lens 7, and is emitted forward from the light emitting surface 3a of the outer lens 3. As a result, the light emitting surface 3a whose left end is inclined obliquely emits light.

  As described above, according to the vehicular lamp 1, the light emitted forward from the plurality of LEDs 42,... Is individually reflected to the right by the plurality of first reflecting surfaces 52a,. After that, since it is reflected forward by the second reflecting surface 6a, the depth of the lamp in the front-rear direction can be made compact.

  Further, the plurality of LEDs 42,... And the plurality of first reflection surfaces 52a,... Correspond to each other and are obliquely arranged in front view, and the left end portion of the second reflection surface 6a is also formed of the plurality of first reflection surfaces 52a, Since it is formed obliquely in front view corresponding to the arrangement of ..., the light reflected by the left end portion of the second reflecting surface 6a is directed obliquely forward in front view, and as a result, the inclined light emitting surface 3a can be made to emit light suitably.

  Moreover, since the light radiate | emitted from several LED42 ... is separately reflected rightward by the some 1st reflective surface 52a ... arrange | positioned in the front, several LED42 ... is front view. Regardless of the inclined arrangement, the positions in the front-rear direction, which is the light emitting direction, can be aligned. Therefore, a rigid flat printed circuit board 41 can be used as a board on which the plurality of LEDs 42,... Are mounted, and the cost can be reduced as compared with the conventional technique that requires the use of a more expensive flexible board. it can.

  The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the plurality of first reflecting surfaces 52a,... Reflect light emitted from the plurality of LEDs 42, rightward, but the light is reflected by the first reflecting surfaces 52a,. The direction is not particularly limited as long as it is a vertical direction substantially perpendicular to the front-rear direction. However, of course, it is necessary to change the arrangement position of the second reflector 6 (second reflection surface 6a) according to the reflection direction.

  Further, although the curved plate-shaped second reflector 6 is illustrated in FIG. 2, the second reflector 6 may be a flat plate. In this case, the second reflecting surface 6a of the second reflector 6 may be a uniform flat surface as long as the reflected light in a desired direction can be obtained, or alternately connected to the step surface. It is good also as a several reflective surface which comprises a step-shaped surface (front surface of the 2nd reflector 6).

Further, although the plurality of LEDs 42,... Have been described as the light source of the vehicular lamp 1, the light source of the vehicular lamp according to the present invention may be a light source other than a light emitting diode.
The vehicle lamp according to the present invention is not particularly limited, but can be suitably applied to a daytime running lamp and the like in addition to various signal lights such as a position lamp and a stop lamp.

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Housing 3 Outer lens 3a Light emission surface 4 Light source unit 41 Printed circuit board (board | substrate)
42 LED (light source)
5 First Reflector 50 Reflector 51 Back Plate 52 Curved Plate 52a First Reflector 6 Second Reflector 6a Second Reflector 7 Inner Lens

Claims (2)

Each emits light forward, and a plurality of light sources arranged obliquely in front view;
Corresponding to the plurality of light sources, they are arranged obliquely in front view while being individually arranged in front of the plurality of light sources, and individually reflect the light emitted from the plurality of light sources in a vertical direction substantially perpendicular to the front-rear direction. A plurality of first reflecting surfaces to be caused;
The plurality of first reflecting surfaces are arranged in the vertical direction, and an end opposite to the vertical direction is formed obliquely in front view corresponding to the arrangement of the plurality of first reflecting surfaces, A second reflection surface that reflects light reflected by the plurality of first reflection surfaces forward;
A vehicular lamp characterized by comprising:   2. The vehicular lamp according to claim 1, wherein the plurality of light sources are mounted on a front surface of a flat board that is erected substantially vertically in the front-rear direction.

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