JP2013246889A - Lamp fitting for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep depth of a lamp fitting for a vehicle from getting long, even if a ratio of its width to its height is deviated from 1 when it is seen from front.SOLUTION: A lamp fitting 1 for a vehicle is provided with a light-emitting element 30 having an optical axis Ax2 extended in a direction orthogonal to a lamp optical axis Ax1 extended toward front as seen from the front of the lamp fitting, a first reflector 40 surrounding the light-emitting element 30 at a lower side of the same 30 for reflecting light emitted from the light-emitting element 30 frontward, and a second reflector 50 fitted under the first reflector 40 as seen from the front of the lamp fitting and directed frontward. The first reflector 40 has a slit 42 formed, and the second reflector 50 reflects light emitted from the light-emitting element 30 and passing the slit 42 to the front.

Description

  The present invention relates to a vehicular lamp.

  Patent Document 1 discloses a vehicular lamp that can effectively use light emitted from a bulb. Four reflectors are used in this vehicular lamp. The first reflector (20) is a composite ellipsoidal reflector, and the valve (10) penetrates the center of the first reflector (20) back and forth, and the first reflector (20) has four openings (23). Is formed. The second reflector (30) is a composite ellipsoidal reflector and is disposed in front of the valve (10). The third reflector (40RU, 40RL) is a compound parabolic reflector, and is arranged on the right rear side of the first reflector (20). The fourth reflector (40LU, 40LL) is a compound parabolic reflector, and is arranged on the left rear side of the first reflector (20). The first reflector (20) reflects light emitted from the bulb (10) forward to form a light distribution having a horizontal cut-off line forward. The second reflector (30) reflects the light emitted from the bulb (10) backward, and condenses the reflected light in the four openings (23). The third reflector (40RU, 40RL) reflects the reflected light that has passed through the right two openings (23) forward, and the fourth reflector (40LU, 40LL) receives the light that has passed through the left two openings (23). Reflects forward. When this vehicular lamp is viewed from the front, the ratio of width to height (aspect ratio) is not 1.

JP 2009-245620 A

In the vehicular lamp described in Patent Document 1, since the bulb (10) is long in the front-rear direction, the depth in the front-rear direction of the vehicular lamp is long.
Moreover, in order to further widen the lateral width of the vehicular lamp described in Patent Document 1 and to make the aspect ratio further different from 1, the opening (23) is enlarged, and the third reflector (40RU, 40RL) and the fourth reflector ( 40LU, 40LL) is increased. Then, since the third reflector (40RU, 40RL) and the fourth reflector (40LU, 40LL) are parabolic reflectors, the depths of the third reflector (40RU, 40RL) and the fourth reflector (40LU, 40LL) are reduced. become longer. For this reason, the depth of the vehicular lamp is also increased.

  Therefore, the problem to be solved by the present invention is that when the vehicle lamp is viewed from the front, even if the ratio of the width to the height of the vehicle lamp is away from 1, the depth of the vehicle lamp is Try not to be long.

  In order to solve the above problems, a vehicle lamp according to the present invention includes a light emitting element having an optical axis extending in a direction orthogonal to a lamp optical axis extending forward when viewed from the front of the lamp, and the light emitting element. A parabolic first reflector that surrounds the light emitting element on the side where the optical axis extends and reflects light emitted from the light emitting element forward, and the first reflector as compared with the first reflector when viewed from the front of the lamp. A planar second reflector that is provided on a side where the optical axis of the light emitting element extends and is directed forward, and an opening is formed in the first reflector, and the second reflector extends from the light emitting element. The light emitted and passed through the opening is reflected forward.

  Preferably, the opening is formed in the first reflector at a position shifted from an intersection of the optical axis of the light emitting element and the first reflector.

  Preferably, the second reflector is provided in a flat plate shape, and the second reflector has an end away from the light emitting element in front of an end near the light emitting element from a plane orthogonal to the lamp optical axis. Inclined like so.

  Preferably, the reflective surface facing the front of the second reflector is a textured surface or a prism cut surface.

  Preferably, when viewed from the front of the lamp, the opening is a slit provided in a long direction in a direction perpendicular to the optical axis of the light emitting element.

  Preferably, when viewed from the front of the lamp, the optical axis of the light emitting element extends downward, the second reflector is disposed below the first reflector, and the height of the second reflector in the vertical direction is the second height. It is higher than the horizontal width of the reflector.

  Preferably, the vertical height of the second reflector exceeds twice the vertical height of the first reflector, and the depth in the front-rear direction of the second reflector is less than the depth in the front-rear direction of the first reflector. It is.

  According to the present invention, since the second reflector facing forward is a planar reflector, the second reflector can be designed to extend in the direction in which the optical axis of the light emitting element extends when viewed from the front of the lamp. The reflector is not deep and long. If the second reflector is designed to extend in the direction in which the optical axis of the light emitting element extends as viewed from the front of the lamp, the aspect ratio can be greatly separated from 1 when the vehicular lamp is viewed from the front. Therefore, it is possible to provide a vehicular lamp that has a short depth and is vertically long or horizontally long.

It is a front view of a vehicle lamp. It is II-II sectional drawing.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, and therefore the scope of the present invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a front view of a vehicular lamp 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a cross section taken along the line II-II shown in FIG.

  The vehicular lamp 1 is a fog lamp (auxiliary headlamp) on the right front or left front of the vehicle. An optical axis Ax1 of the vehicular lamp 1 extends forward from the vehicular lamp 1.

  The vehicle lamp 1 includes a housing 10, an outer lens 20, a light emitting element 30, a first reflector 40, a second reflector 50, and the like. In addition, in order to show the inside of the housing 10 in detail in FIG. 1, illustration of the outer lens 20 is abbreviate | omitted.

  The housing 10 is provided in a box shape, and the front portion of the housing 10 opens. The outer lens 20 is attached to the front end of the housing 10, the front opening of the housing 10 is closed by the outer lens 20, and the lamp chamber 11 surrounded by the housing 10 and the outer lens 20 is formed. The outer lens 20 is transparent and allows light to pass through.

The light emitting element 30, the first reflector 40 and the second reflector 50 are accommodated in the lamp chamber 11.
The light emitting element 30 is a light emitting diode (LED), an organic LED (organic EL element) or other semiconductor light emitting element. The light emitting element 30 is attached to the front surface of the housing 10 in the lamp chamber 11. Specifically, the substrate 31 is attached to the front surface of the housing 10, the substrate 31 extends obliquely forward and downward from the front surface of the housing 10, and the light emitting element 30 is surface-mounted on the lower surface of the substrate 31. When viewed from the front of the vehicular lamp 1 (see FIG. 1), the optical axis Ax2 of the light emitting element 30 extends downward from the light emitting element 30. Specifically, the optical axis Ax2 of the light emitting element 30 extends obliquely downward and downward from the light emitting element 30 (see FIG. 2), and the light emitting element 30 emits light toward the diagonally backward direction. The optical axis Ax2 of the light emitting element 30 is a virtual line extending from the light emitting element 30 in the direction in which the luminous intensity is maximized.

  The first reflector 40 is fixed to the housing 10 in the lamp chamber 11. The first reflector 40 has a semi-dome shape that is substantially the lower half of the dome shape that has the rear portion at the top and is open on the front side.

  The substrate 31 extends from the rear outer side of the apex of the first reflector 40 to the front inner side of the first reflector 40. The light emitting element 30 is disposed in front of the apex of the first reflector 40. The first reflector 40 surrounds the light emitting element 30 from the rear side of the light emitting element 30 to the left front side, the right front side, and the lower front side of the light emitting element 30.

  A metal reflection film (for example, an aluminum vapor deposition film or a silver vapor deposition film) is formed on the inner surface (concave surface) 41 on the front side of the first reflector 40, and the inner surface 41 is a reflection surface. The first reflector 40 is a parabolic multi-reflector. Specifically, the reflective surface 41 of the first reflector 40 is divided into a plurality of regions, small reflective surfaces such as parabolic column surfaces are formed in these regions, and the reflective surface 41 as an aggregate of these small reflective surfaces is formed. Based on the paraboloid of revolution. The first reflector 40 reflects the light emitted from the light emitting element 30 forward to the reflecting surface 41 and deflects the reflected light by each small reflecting surface of the reflecting surface 41. Thereby, the first reflector 40 forms a fog lamp light distribution pattern on the virtual screen directly facing the vehicular lamp 1. The bright part of the light distribution pattern is formed below the intersection (hereinafter referred to as H line) of the horizontal plane passing through the optical axis Ax1 of the vehicular lamp 1 and the virtual screen in the virtual screen. The dark part of the light distribution pattern is formed above the H line. A cut-off line (bright / dark boundary line) that partitions the bright part and the dark part of the light distribution pattern is formed along the H line. Since the directivity of the light emitting element 30 is high, the light reflected by the first reflector 40 has almost no component upward from the horizontal, and a cut-off line clearly appears.

  A slit (opening) 42 is formed in the first reflector 40. The slit 42 is formed in the first reflector 40 at a position shifted from the intersection between the optical axis Ax <b> 2 of the light emitting element 30 and the first reflector 40. Specifically, the formation position of the slit 42 is in front of the intersection between the optical axis Ax of the light emitting element 30 and the first reflector 40. When viewed from the front of the vehicular lamp 1 (see FIG. 1), the slit 42 is provided in a long direction in a direction orthogonal to the optical axis Ax2 of the light emitting element 30 (that is, in the left-right direction).

  A flat plate-like second reflector 50 is provided below the first reflector 40. The second reflector 50 is fixed to the housing 10 in the lamp chamber 11. The second reflector 50 is directed forward and provided in an inclined state. Specifically, the second reflector 50 is inclined from the surface orthogonal to the optical axis Ax1 of the vehicular lamp 1 so that the lower end 50a away from the light emitting element 30 comes out in front of the upper end 50b near the light emitting element 30. . That is, the second reflector 50 is inclined forward and downward.

  The second reflector 50 is provided vertically and the height D in the vertical direction of the second reflector 50 is higher than the width E in the horizontal direction of the second reflector 50.

  The position of the lower end 50a of the second reflector 50 in the front-rear direction is aligned with or slightly ahead of the position of the front end 40a of the first reflector 40 in the front-rear direction. The position of the upper end 50b of the second reflector 50 in the front-rear direction is substantially aligned with the position of the slit 42 in the front-rear direction. When viewed from the front, the upper end 50 b of the second reflector 50 is close to the lower end of the first reflector 40. The depth C of the second reflector 50 is less than the depth A of the first reflector 40 (A> C). The height D of the second reflector 50 exceeds twice the height B of the first reflector 40 (D> 2B).

  The second reflector 50 is a planar reflector, and the front surface 51 of the second reflector 50 is a reflecting surface based on a plane. The reflective surface 32 is a textured surface (diffuse reflective surface), a prism cut surface in which a plurality of small concave surfaces or convex surfaces are arranged, or a metal reflective film on the textured surface or prism cut surface. This is a surface on which (for example, an aluminum vapor deposition film or a silver vapor deposition film) is formed.

  Light emitted from the light emitting element 30 passes through the slit 42, and the light enters the reflecting surface 51 of the second reflector 50. The reflecting surface 51 of the second reflector 50 reflects light that has passed through the slit 42 forward. The light distribution pattern formed by the light reflected by the reflection surface 51 is combined with the light distribution pattern formed by the light reflected by the reflection surface 41 of the first reflector 40. For example, the maximum luminous intensity of the light distribution pattern formed by the light reflected by the reflecting surface 51 is 60 cd, and the luminous intensity of the light distribution pattern is 60 cd or less.

  As shown in FIG. 2, the front edge 42 a of the slit 42 overlaps the line connecting the light emitting element 30 and the lower end of the second reflector 50. The rear edge 42 b of the slit 42 overlaps the line connecting the light emitting element 30 and the upper end of the second reflector 50. Therefore, the light that has passed through the slit 42 enters the entire reflecting surface 51. Therefore, when the vehicular lamp 1 is viewed from the front of the vehicular lamp 1, the entire reflecting surface 51 appears to shine. The shining ranges are the reflecting surface 41 and the reflecting surface 51. Since the reflecting surface 51 is vertically long, the shining range of the vehicular lamp 1 as a whole extends vertically.

  Since the reflection surface 51 is a textured surface or a prism cut surface, the light reflected by the reflection surface 51 includes a component of diffuse reflection light. Further, the light reflected by the reflecting surface 51 includes not only the component downward from the horizontal but also the component upward from the horizontal. Therefore, even if the directivity of the light emitting element 30 is high, the directivity of the light reflected by the reflecting surface 51 is low.

  Since the light reflected by the reflecting surface 41 of the first reflector 40 is light downward from the horizontal direction, a pedestrian in front of the vehicular lamp 1 or a driver of an oncoming vehicle can only use the light from the reflecting surface 41. It is difficult to notice the presence of the vehicle lamp 1 and the vehicle. However, since the light reflected by the reflecting surface 51 of the second reflector 50 includes an upward component from the horizontal direction, the light reflected by the reflecting surface 51 reaches a pedestrian or an oncoming driver. Thus, pedestrians and oncoming drivers can see the light. Therefore, a pedestrian or a driver of an oncoming vehicle notices the presence of the vehicle lamp 1 and the vehicle, and safety is improved. Furthermore, the driver of the vehicle to which the vehicle lamp 1 is attached can easily recognize a sign on the distance or on the road by the light reflected by the reflecting surface 51.

  Since the slit 42 is formed at a position shifted from the intersection between the optical axis Ax2 of the light emitting element 30 and the first reflector 40, the amount of light passing through the slit 42 is low. Further, the amount of light reflected by the reflecting surface 41 of the first reflector 40 is not significantly reduced. Further, since the slit 42 is horizontally long and the width of the slit 42 is narrow, the amount of light passing through the slit 42 is low. Therefore, the light distribution pattern formed by the light reflected by the reflecting surface 41 does not become dark.

  The light reflected by the reflecting surface 51 of the second reflector 50 has a sufficiently lower intensity than the light reflected by the reflecting surface 41 of the first reflector 40. Therefore, the light distribution pattern formed by the light reflected by the reflection surface 51 does not adversely affect the light distribution pattern formed by the light reflected by the reflection surface 41. Further, the cut-off line of the light distribution pattern formed by the light reflected by the reflecting surface 41 is not blurred. Therefore, the laws and regulations of Japan, Europe and the United States will be satisfied.

  Since the light reflected by the reflecting surface 51 of the second reflector 50 has a low intensity, the vehicular lamp 1 has a glare to the driver or pedestrian of the oncoming vehicle even if the light includes an upward component. Not give.

  Further, since the directivity of the light reflected by the reflecting surface 51 is low, the reflected light from the reflecting surface 51 looks blurred when the vehicle lamp 1 is viewed from the front of the vehicle lamp 1. Therefore, this vehicular lamp 1 does not give glare to the driver or pedestrian of the oncoming vehicle.

  If the first reflector 40 is provided vertically without providing the second reflector 50, the vehicle lamp 1 as a whole is also provided vertically. However, since the first reflector 40 is a parabolic reflector, the vehicle lamp The depth of 1 also becomes long. However, in the present embodiment, a flat plate-like second reflector 50 is provided separately from the first reflector 40, and the second reflector 50 is provided in an inclined state. Even if the aspect ratio with the vertical height is greatly separated from 1, and the vehicular lamp 1 is designed to be vertically long as a whole, the depth of the vehicular lamp 1 does not become long.

The present invention should not be construed as being limited to the above-described embodiment, but can be appropriately changed or improved from the above-described embodiment.
For example, the vehicular lamp 1 may be turned horizontally by rotating the vehicular lamp 1 90 degrees left or right around the optical axis Ax1. The vehicular lamp 1 may be turned upside down. However, in any case, the design of the small reflection surface of the reflection surface 41 of the first reflector 40 is changed so that the light distribution pattern of the light reflected by the reflection surface 41 satisfies the standards and regulations for fog lamps.

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 30 Light emitting element 40 1st reflector 41 Reflecting surface 42 Slit (opening)
50 Second reflector 51 Reflecting surface Ax1 Lamp optical axis Ax2 Optical axis of light emitting element

Claims (7)

A light emitting element having an optical axis extending in a direction orthogonal to a lamp optical axis extending forward when viewed from the front of the lamp;
A parabolic first reflector that surrounds the light emitting element on the side where the optical axis of the light emitting element extends and reflects light emitted from the light emitting element forward;
A planar second reflector, which is provided on the side where the optical axis of the light emitting element extends from the first reflector as viewed from the front of the lamp, and is directed forward;
An opening is formed in the first reflector,
The second reflector reflects light emitted from the light emitting element and passed through the opening forward;
A vehicular lamp characterized by the above. The opening is formed in the first reflector at a position shifted from an intersection of the optical axis of the light emitting element and the first reflector.
The vehicular lamp according to claim 1. The second reflector is provided in a flat plate shape,
The second reflector is inclined from a plane orthogonal to the lamp optical axis so that an end away from the light emitting element comes out in front of an end closer to the light emitting element.
The vehicular lamp according to claim 1 or 2. The reflective surface facing the front of the second reflector is a textured surface or a prism cut surface,
The vehicular lamp according to any one of claims 1 to 3, wherein the vehicular lamp is provided. When viewed from the front of the lamp, the opening is a slit provided in a long direction in a direction perpendicular to the optical axis of the light emitting element.
The vehicular lamp according to any one of claims 1 to 4, wherein the vehicular lamp is provided. When viewed from the front of the lamp, the optical axis of the light emitting element extends downward,
The second reflector is disposed below the first reflector;
The vertical height of the second reflector is higher than the horizontal width of the second reflector,
The vehicular lamp according to any one of claims 1 to 5, wherein the vehicular lamp is provided. The vertical height of the second reflector is more than twice the vertical height of the first reflector;
The depth in the front-rear direction of the second reflector is less than the depth in the front-rear direction of the first reflector.
The vehicular lamp according to claim 6.

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