JP2023073767A - Lamp for vehicle - Google Patents

Abstract

To provide a lamp for a vehicle which can improve the appearance of light emission.SOLUTION: Reflection faces 10 of a plurality of reflectors 6 constitute one-side light emitting regions E which are aligned in one direction when viewing the plurality of reflectors 6 in a front view since the plurality of reflectors 6 are at least partially aligned in one direction. In the light emitting region E, extension lines S' which are formed by extending boundary lines S of the reflection faces 10 aligned in one direction up to a direction in which a light source 5 is located are formed so as to intersect with one another at one cross point, and the extension lines S' are defined as the boundary lines S of the reflection faces 10 which are aligned in one direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to a vehicle lamp.

For example, there is a vehicular lamp mounted on a vehicle in which a light source such as a light emitting diode (LED) and a reflector for reflecting the light emitted from the light source toward the front side are arranged inside the lamp body. .

Further, as shown in FIG. 7A, for example, some of the vehicle lamps described above include a plurality of light sources 101 and a plurality of reflectors 102 provided corresponding to the plurality of light sources 101. The reflectors 102 are arranged side by side in the width direction of the vehicle (hereinafter referred to as "the vehicle width direction") (see, for example, Patent Document 1 below).

In such a vehicle lamp, when the plurality of reflectors 102 are viewed from the front, the reflecting surfaces 102a of the plurality of reflectors 102 constitute one light emitting region E' arranged in the vehicle width direction.

JP 2017-059315 A

By the way, in the light-emitting region E′ having the shape shown in FIG. 7A described above, since the shapes of the reflecting surfaces 102a aligned in the vehicle width direction match each other, each boundary line of the reflecting surfaces 102a aligned in the vehicle width direction S'' are parallel to each other.

On the other hand, when the light-emitting region E′ is formed in an irregular shape as shown in FIG. shape.

In this case, if the boundary lines S'' of the reflective surfaces 102a arranged in the vehicle width direction remain parallel to each other, not only does the appearance of the light emitting region E' deteriorate, but also a part of the light emitting region E' (for example, corners) etc.) may cause dark areas.

SUMMARY OF THE INVENTION The present invention has been proposed in view of such conventional circumstances, and an object of the present invention is to provide a vehicle lamp capable of improving the appearance of light emission.

In order to achieve the above object, the present invention provides the following means.
[1] a plurality of light sources arranged in one direction;
a plurality of reflectors each provided corresponding to each of the plurality of light sources and including a reflecting surface that reflects the light emitted from the light sources toward the front side;
At least part of the plurality of reflectors are arranged side by side in the one direction, so that when the plurality of reflectors are viewed from the front, the reflecting surfaces of the plurality of reflectors are arranged in the one direction to emit light. make up the area,
The light-emitting region is formed by extending each boundary line of the reflecting surface aligned in the one direction in the direction in which the light source is positioned, and the extension lines intersect at one intersection, and the extension lines are formed in the one direction. a vehicular lamp, characterized in that each boundary line of the reflective surfaces lined up is divided into sections.
[2] At least a portion of the plurality of reflectors are arranged side by side in another direction that intersects with the one direction, so that when the plurality of reflectors are viewed from the front, the reflecting surfaces of the plurality of reflectors constitutes one light emitting region aligned in the one direction and the other direction,
The light-emitting region is formed such that extension lines obtained by extending respective boundary lines of the reflecting surfaces arranged in the one direction in the direction in which the light source is positioned intersect at one intersection, and the extension lines extend in the other direction. The vehicular lamp according to the above [1], wherein each boundary line of the reflecting surface is arranged in parallel with each other.
[3] The light-emitting region is formed so that adjacent angles of the extension lines radially aligned from the intersection point are equal to each other, and the extension lines are defined as boundary lines of the reflection surfaces aligned in the one direction. The vehicular lamp according to the above [1] or [2], characterized in that it is constructed by:
[4] Any one of [1] to [3], wherein the optical axis of the light emitted from the light source and the boundary line are not parallel when the plurality of reflectors are viewed from the front. 1. The vehicle lamp according to item 1.
[5] The above [1] to [4], wherein the reflector has a structure in which the reflecting surface is divided into a plurality of reflecting regions, and controls the reflection direction of light incident on each reflecting region. ].
[6] Any one of [1] to [5] above, wherein the plurality of light sources are arranged on the same surface of the same substrate and emit light radially in the same direction. 1. The vehicle lamp according to item 1.

As described above, according to the present invention, it is possible to provide a vehicle lamp capable of improving the appearance of light emission.

1 is a front view showing the configuration of a vehicle lamp according to an embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view of the vehicle lamp taken along line AA shown in FIG. 1; 2 is a perspective view showing the configuration of a reflector housing when the vehicle lamp shown in FIG. 1 is viewed from the side; FIG. FIG. 2 is a front view for explaining partitioning of a reflective surface by boundary lines of a light-emitting region formed by the reflective surfaces of a plurality of reflectors shown in FIG. 1; FIG. 2 is a front view for explaining the relationship between each boundary line of a light emitting region formed by reflecting surfaces of a plurality of reflectors shown in FIG. 1 and the optical axis of light emitted from each light source; FIG. 4 is a front view for explaining partitioning of a reflective surface by each boundary line of a trapezoidal light emitting area; FIG. 12A is a diagram for explaining division of a reflecting surface by each boundary line of a light emitting region formed by reflecting surfaces of a plurality of conventional reflectors, and FIG. and (B) is a front view when the shapes of the reflecting surfaces are different from each other.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the drawings used in the following description, the scale of dimensions may vary depending on the component in order to make it easier to see each component, and the dimensional ratio of each component may not necessarily be the same as the actual do not have.

As an embodiment of the present invention, for example, a vehicle lamp 1 shown in FIGS. 1 to 5 will be described.
1 is a front view showing the configuration of the vehicle lamp 1. FIG. FIG. 2 is a cross-sectional view of the vehicle lamp 1 taken along line AA shown in FIG. FIG. 3 is a perspective view showing the configuration of the reflector housing 6A when the vehicle lamp 1 is viewed from the side. FIG. 4 is a front view for explaining division of the reflecting surface 9 by each boundary line S of the light emitting area E formed by the reflecting surfaces 10 of the plurality of reflectors 6. As shown in FIG. FIG. 5 is a front view for explaining the relationship between each boundary line S of the light emitting area E formed by the reflecting surfaces 10 of the plurality of reflectors 6 and the optical axis AX of the light L emitted from each light source 5. FIG. .

In the drawings shown below, an XYZ orthogonal coordinate system is set, the X-axis direction is the front-rear direction (length direction) of the vehicle lamp 1, the Y-axis direction is the left-right direction (width direction) of the vehicle lamp 1, and the Z The axial direction is indicated as the vertical direction (height direction) of the vehicle lamp 1 .

As shown in FIGS. 1 and 2, the vehicular lamp 1 of the present embodiment is mounted on both corners (left rear corners in this embodiment) on the rear end side of a vehicle (not shown). The present invention is applied to a stop lamp (brake lamp), which emits red light during braking, among the rear combination lamps.

In the following description, unless otherwise specified, the terms "front", "rear", "left", "right", "upper", and "lower" are used when the vehicle lamp 1 is viewed from the front (rear of the vehicle). shall mean the respective directions of Therefore, each direction when the vehicle is viewed from the front (vehicle front) is a direction in which front, rear, left, and right are reversed.

Also, in the following description, the numbers of parts such as light sources and reflectors are examples, and the number of these parts and the ratio of division can be adjusted as appropriate depending on the situation in which the contents of the present invention are applied. It is possible.

Specifically, this vehicle lamp 1 is arranged inside a lamp body 2 that constitutes a rear combination lamp. The lamp body 2 is composed of a housing 3 with an open front surface and an outer lens (cover lens) 4 that covers the opening of the housing 3 .

In the lamp body 2, the outer side in the width direction of the vehicle (hereinafter referred to as the "vehicle width direction") moves in a direction in which the outer side recedes from the inner side in accordance with the slant shape given to the corner portion on the rear end side of the vehicle. , the outer lens 4 has a curved shape.

As a stop lamp, the vehicle lamp 1 of this embodiment has a curved shape in which the outer side in the vehicle width direction recedes from the inner side. In addition, when the vehicle lamp 1 is viewed from the front, the vehicle lamp 1 has a generally L-shaped bent shape as a whole while curving obliquely upward from the inside toward the outside in the vehicle width direction.

It should be noted that the shapes of the lamp body 2 and the stop lamp are not necessarily limited to such shapes, and can be appropriately changed according to the design of the vehicle.

The vehicle lamp 1 of this embodiment includes a plurality of (eight in this embodiment) light sources 5, a plurality of (eight in this embodiment) reflectors 6, an inner lens 7, and an extension 8. are arranged inside the lamp body 2 .

The plurality of light sources 5 are composed of light-emitting diodes (LEDs) that emit red light (hereinafter referred to as "light") L. As shown in FIG. The plurality of light sources 5 are arranged in one direction (in this embodiment It is mounted side by side in the vehicle width direction). Also, the plurality of light sources 5 can be arranged side by side at regular intervals in one direction.

The plurality of circuit boards 9A and 9B are arranged separately in two upper and lower stages according to the shape of the stop lamp described above. Six light sources 5 are arranged side by side in the vehicle width direction on the lower circuit board 9A. On the other hand, two light sources 5 are arranged side by side in the vehicle width direction on the upper circuit board 9B. The upper circuit board 9B is provided at a position shifted outward in the vehicle width direction with respect to the lower circuit board 9A.

Each of the circuit boards 9A, 9B is arranged in a state of being inclined obliquely upward from the inner side to the outer side in the vehicle width direction. Thereby, each light source 5 radially emits light L in a direction perpendicular to one surface of each circuit board 9A, 9B (diagonally downward in this embodiment). That is, the plurality of light sources 5 are arranged side by side on the same surface of the same circuit boards 8A and 8B, and are configured to emit the light L radially in the same direction.

Although the circuit boards 9A and 9B are provided with the drive circuit for driving the LEDs described above, the mounting board provided with the LEDs and the circuit board provided with the drive circuit are arranged separately. Alternatively, the mounting board and the circuit board may be electrically connected via a wiring cord called a harness to protect the drive circuit from the heat generated by the LED.

As shown in FIGS. 1, 2 and 3, the plurality of reflectors 6 are arranged in two upper and lower stages in accordance with the shape of the stop lamp described above, and are integrated by reflector housings 6A connected to each other. is configured to

The reflector housing 6A is made of a reflecting member having a reflecting film such as an aluminum deposition film provided on its inner surface. The reflector housing 6A has a curved shape in which the outer side in the vehicle width direction recedes from the inner side in accordance with the shape of the stop lamp described above. In addition, the reflector housing 6A has a generally L-shaped bent shape as a whole while curving obliquely upward from the inner side to the outer side in the vehicle width direction when viewed from the front.

Of these, the lower reflectors 6 are positioned below the lower circuit board 9A, and are arranged side by side in the vehicle width direction, corresponding to the six light sources 5 mounted on the circuit board 9A. . On the other hand, the upper reflectors 6 are positioned below the upper circuit board 9B and are arranged side by side in the vehicle width direction corresponding to the two light sources 5 mounted on the circuit board 9B.

Each reflector 6 has, for example, a concave parabolic reflecting surface (hereinafter referred to as a “reflecting surface”) 10 obtained by cutting a part of a paraboloid of revolution whose focus is the center (light emitting point) of each light source 5. ing. In addition, an opening 6 a is provided in the upper portion of each reflector 6 to allow the light L emitted from the light source 5 to pass toward the reflecting surface 10 .

Each reflector 6 has a multi-reflector structure in which a reflecting surface 10 is divided into a plurality of reflecting areas 10a. Thereby, each reflector 6 can control the reflection direction of the light L incident on each reflection area 10a and reflect the light L incident on the reflection surface 10 while diffusing it in the vehicle width direction.

As shown in FIGS. 1 and 2, the inner lens 7 is made of a red light-transmitting member and arranged to cover the front side of the reflector housing 6A in accordance with the shape of the stop lamp described above.

In other words, the inner lens 7 has a curved shape in which the outer side recedes from the inner side in the vehicle width direction. In addition, the inner lens 7 has a generally L-shaped bent shape as a whole while curving obliquely upward from the inner side to the outer side in the vehicle width direction when viewed from the front.

The inner lens 7 emits the light L reflected by the reflecting surfaces 10 of the plurality of reflectors 6 from the back side to the inside and then to the outside from the front side. Thus, in the vehicle lamp 1 of the present embodiment, the front side of the inner lens 7 can be used as the light emitting surface 7a of the stop lamp to emit red light.

As shown in FIG. 2 , the extension 8 is made of a colored (for example, black) light shielding member and has an opening 8 a corresponding to the light emitting surface 7 a of the inner lens 7 . The extension 8 is arranged so as to cover the light emitting surface 7a of the inner lens 7. As shown in FIG. Thus, the extension 8 blocks the light L emitted from the inner lens 7 other than the light emitting surface 7a.

By the way, in the vehicle lamp 1 of the present embodiment, as shown in FIG. 4, when the plurality of reflectors 6 are viewed from the front, the reflecting surfaces 10 of the plurality of reflectors 6 constitute one light emitting area E. .

Specifically, the light emitting area E is curved obliquely upward from the inside to the outside in the vehicle width direction in a front view in accordance with the shape of the light emitting surface 7a of the inner lens 7 described above, and is substantially L as a whole. It has a curved shape.

Of these, in the light emitting region E, six reflecting surfaces 10 by the lower reflector 6 are provided side by side in one direction (hereinafter referred to as "horizontal direction"). Also, two reflecting surfaces 10 by the upper reflector 6 are provided side by side in the left-right direction. Further, the reflective surfaces 10 arranged in the left-right direction are arranged in two rows in another direction (hereinafter referred to as "vertical direction") that intersects the one direction.

The light-emitting region E is formed so that extension lines S′ obtained by extending boundary lines S of the reflecting surfaces 10 arranged in the horizontal direction in the direction in which the light source 5 is positioned (upward in this embodiment) intersect at one intersection point P. , and the extension lines S' are divided as respective boundary lines S of the reflecting surfaces 10 arranged in the left-right direction.

Further, the light emitting area E is formed so that extension lines S′ obtained by extending the boundary lines S of the reflecting surfaces 10 arranged in the horizontal direction in the direction in which the light source 5 is positioned intersect at one intersection point P, and the extension lines S ' are partitioned as respective boundary lines S of the reflecting surfaces 10 arranged in the vertical direction.

Further, the light-emitting region E is formed so that the angles θ between adjacent extension lines S′ radiating from the intersection point P are equal to each other. Each boundary line S with the reflecting surface 10 is partitioned.

In other words, the light emitting region E is formed by extending a part of a plurality of extension lines S′ radially toward the light source 5 from one intersection point P located on the side opposite to the reflector 6 with respect to the light source 5, in the left-right direction. The reflective surfaces 10 arranged side by side and the reflective surfaces 10 arranged in the vertical direction are partitioned as respective boundary lines S.

Regarding the method of partitioning the light-emitting region E by a plurality of boundary lines S, for example, with reference to an intersection point P where extension lines S′ extending from the boundary lines S positioned at both ends in the left-right direction of the light-emitting region E intersect, There is a method of partitioning by part of the extension lines S' dividing the extension lines S' at equal intervals. Further, with reference to the intersection point P where the extension lines S′ of the boundary lines S located at both ends in the left-right direction of the reflective surface 10 located in the upper stage of the light emitting region E intersect, the extension lines S′ are separated by 2 There is a method of partitioning by equally dividing the area and arranging extension lines S' radially from the intersection point P at the bisected angle.

Further, in the vehicle lamp 1 of the present embodiment, as shown in FIG. 5, when the plurality of reflectors 6 (light emitting regions E) are viewed from the front, the optical axis AX of the light L emitted from each light source 5, The boundary line S of each reflecting surface 10 is non-parallel.

As described above, in the vehicle lamp 1 of the present embodiment, when the light emitting region E formed by the reflecting surfaces 10 of the plurality of reflectors 6 has an irregular shape in accordance with the shape of the light emitting surface 7a of the stop lamp. However, by dividing each boundary line S of the reflecting surface 10 described above, it is possible to make each reflecting surface 10 constituting the light emitting area E have a uniform shape. Thereby, it is possible to improve the appearance of light emission in the light emission area E (the light emission surface 7a of the stop lamp).

In addition, in the vehicle lamp 1 of the present embodiment, by forming the reflecting surfaces 10 forming the light emitting region E into a uniform shape, a part of the light emitting region E (for example, a corner portion) has a dark portion. It is possible to cause the light emitting region E to emit light more uniformly while suppressing the occurrence of such light.

It should be noted that the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.
For example, for a trapezoidal light emitting region E as shown in FIG. Each boundary line S of the reflecting surface 10 can be partitioned symmetrically by a part of the extension line S' that divides the line S' at equal intervals.

Note that the light-emitting region E is not necessarily limited to a configuration in which the adjacent angles θ of the extension lines S′ radially aligned from the intersection point P are equal to each other, and the extension lines S′ radially aligned from the intersection point P may be configured such that the angle θ adjacent to each other gradually (regularly) changes.

Regarding the light-emitting region E, the boundary lines S of the reflecting surfaces 10 are defined by part of the linear extension lines S′ radially arranged from the intersection point P. A configuration in which the boundary line S of each reflecting surface 10 is partitioned by a part of the curved extension lines S′ arranged side by side may be employed. In addition, regarding the light emitting region E, while dividing the boundary line S of each reflecting surface 10 by a part of the linear extension lines S′ radially arranged from the intersection point P, the reflecting surface within the divided region The shape of 10 may be a shape different from the regularly linear boundary line S (for example, a curved shape).

Further, in the above-described embodiment, the case where the present invention is applied to the stop lamp constituting the rear combination lamp described above is exemplified. It is preferable to divide each boundary line S of the reflecting surface 10 described above on the basis of the boundary line between and. As a result, each reflecting surface 10 that constitutes the light emitting area E can have a uniform shape between the rear combination lamp and the lid lamp.

In the above-described embodiment, the case where the present invention is applied to the stop lamp constituting the above-described rear combination lamp is exemplified. It is also possible to apply the present invention not only to lamps, but also to vehicle lamps on the front side.

That is, the vehicular lamps to which the present invention is applied are not limited to the above-described stop lamps, but include, for example, tail lamps, direction indicators (turn lamps), back lamps, lid lamps, vehicle headlamps (head lamps). Front view of multiple reflectors such as lamps), position lamps, auxiliary headlamps, sub-headlamps, front (rear) fog lamps, daytime running lamps, etc. The present invention can be widely applied to vehicle lamps in which the reflective surfaces of a plurality of reflectors constitute one light-emitting region.

Further, for the light source, a light-emitting element such as a laser diode (LD) can be used in addition to the above-described LED. Further, the color of the light emitted by the light source is not limited to the red light described above, and can be appropriately changed to white light, orange light, or the like, depending on the application of the vehicle lamp.

DESCRIPTION OF SYMBOLS 1... Vehicle lamp 2... Lamp body 3... Housing 4... Outer lens 5... Light source 6... Reflector 7... Inner lens 8... Extension 9A, 9B... Circuit board 10... Reflective surface 10a... Reflective area L... Light E... Light emitting area S...Boundary line S'...Extension line P...Intersection point AX...Optical axis

Claims (6)

a plurality of light sources aligned in one direction;
a plurality of reflectors each provided corresponding to each of the plurality of light sources and including a reflecting surface that reflects the light emitted from the light sources toward the front side;
At least part of the plurality of reflectors are arranged side by side in the one direction, so that when the plurality of reflectors are viewed from the front, the reflecting surfaces of the plurality of reflectors are arranged in the one direction to emit light. make up the area,
The light-emitting region is formed such that extension lines obtained by extending respective boundary lines of the reflecting surfaces arranged in the one direction in the direction in which the light source is positioned intersect at one intersection, and the extension lines extend in the one direction. a vehicular lamp, characterized in that each boundary line of the reflective surfaces lined up is divided into sections. At least some of the plurality of reflectors are arranged side by side in another direction that intersects with the one direction. constitutes one light emitting region aligned in the direction of and the other direction,
The light-emitting region is formed such that extension lines obtained by extending respective boundary lines of the reflecting surfaces arranged in the one direction in the direction in which the light source is positioned intersect at one intersection, and the extension lines extend in the other direction. 2. The vehicular lamp according to claim 1, wherein each boundary line of the reflecting surface is arranged in parallel with each other. The light-emitting region is formed so that adjacent angles of the extension lines radially aligned from the intersection point are equal to each other, and the extension lines are partitioned as boundary lines of the reflection surfaces aligned in the one direction. 3. The vehicular lamp according to claim 1, wherein the vehicular lamp comprises: 4. The vehicle according to any one of claims 1 to 3, wherein the optical axis of the light emitted from the light source and the boundary line are not parallel when the plurality of reflectors are viewed from the front. lighting equipment. 5. The reflector according to any one of claims 1 to 4, wherein the reflector has a structure in which the reflecting surface is divided into a plurality of reflecting areas, and controls a reflection direction of light incident on each reflecting area. The vehicle lamp according to . The vehicle according to any one of claims 1 to 5, wherein the plurality of light sources are arranged side by side on the same surface of the same substrate and emit light radially in the same direction. lighting equipment.

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