Vehicle lamp

Abstract

The present invention provides a vehicle lamp capable of good light emission aesthetics. At least a portion of a plurality of reflectors (6) is arranged in one direction, whereby, when the plurality of reflectors (6) is viewed from the front, the reflecting surfaces (10) of the plurality of reflectors (6) are arranged in one direction, constituting one light emission region (E), the light emission region (E) is formed in such a manner that the extension lines (S') of each boundary line (S) of the reflecting surfaces (10) arranged in one direction are extended in the direction in which the light source (5) is located, and the extension lines (S') intersect at one intersection point, and the extension lines (S') divide the light emission region (E) as each boundary line (S) of the reflecting surfaces (10) arranged in one direction.

Description

Technical Field

[0001] This invention relates to vehicle lighting fixtures. Background Technology

[0002] As a vehicle lamp mounted on a vehicle, there is a vehicle lamp that has a light source such as a light-emitting diode (LED) and a reflector that reflects the light emitted from the light source to the front side, arranged inside the lamp body.

[0003] In addition, among the aforementioned vehicle lighting fixtures, for example... Figure 7 As shown in (A), there is a structure having a plurality of light sources 101 and a plurality of reflectors 102 respectively provided corresponding to the plurality of light sources 101, the plurality of reflectors 102 being arranged along the width direction of the vehicle (hereinafter referred to as "vehicle width direction") (for example, see Patent Document 1 below).

[0004] In such vehicle lighting fixtures, when multiple reflectors 102 are viewed from the front, the reflective surfaces 102a of these multiple reflectors 102 are arranged along the width of the vehicle to form a light-emitting area E'.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2017-059315 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] However, in the case of the above Figure 7 In the luminous region E' of the shape shown in (A), since the shapes of the reflective surfaces 102a arranged along the vehicle width direction are consistent with each other, the boundary lines S” of the reflective surfaces 102a arranged along the vehicle width direction are parallel to each other.

[0010] On the other hand, the luminous area E' is set to match the shape of the luminous surface of the vehicle lamp. Figure 7 In the case of an irregular shape as shown in (B), the reflective surfaces 102a arranged along the vehicle width direction become different shapes from each other.

[0011] In this case, if the boundary lines S” of the reflective surfaces 102a arranged along the vehicle width direction are kept parallel to each other, not only will the aesthetics of the light-emitting area E' deteriorate, but dark areas may also be generated in a part of the light-emitting area E' (e.g., corners).

[0012] The present invention was made in view of the prior art, and its purpose is to provide a vehicle lamp that can produce light with good aesthetic appeal.

[0013] Means for solving the problem

[0014] To achieve the above object, the present application provides the following technical solutions.

[0015] 〔1〕 A vehicle lamp characterized by comprising:

[0016] a plurality of light sources arranged in one direction; and

[0017] a plurality of reflectors each of which is provided corresponding to the plurality of light sources and includes a reflection surface that reflects light emitted from the light source toward a front surface side,

[0018] at least a part of the plurality of reflectors is arranged in the one direction, whereby, when the plurality of reflectors is observed from the front surface side, the reflection surfaces of the plurality of reflectors are arranged in the one direction, and one light emitting region is formed,

[0019] the light emitting region is formed in such a manner that extension lines, which are obtained by extending each boundary line of the reflection surfaces arranged in the one direction toward a direction in which the light sources are located, intersect at one intersection point, and the extension lines divide the light emitting region as each boundary line of the reflection surfaces arranged in the one direction.

[0020] 〔2〕 The vehicle lamp according to the above item 〔1〕, characterized in that,

[0021] at least a part of the plurality of reflectors is arranged in another direction intersecting the one direction, whereby, when the plurality of reflectors is observed from the front surface side, the reflection surfaces of the plurality of reflectors are arranged in the one direction and the another direction, and one light emitting region is formed,

[0022] the light emitting region is formed in such a manner that extension lines, which are obtained by extending each boundary line of the reflection surfaces arranged in the one direction toward a direction in which the light sources are located, intersect at one intersection point, and the extension lines divide the light emitting region as each boundary line of the reflection surfaces arranged in the another direction.

[0023] 〔3〕 The vehicle lamp according to the above item 〔1〕 or 〔2〕, characterized in that,

[0024] the light emitting region is formed in such a manner that adjacent angles of the extension lines, which divide the light emitting region as each boundary line of the reflection surfaces arranged in the one direction, are equal to each other in a radial manner from the intersection point.

[0025] 〔4〕 The vehicle lamp according to any one of the above items 〔1〕 to 〔3〕, characterized in that,

[0026] When the plurality of reflectors are viewed from the front, an optical axis of light emitted from the light source is not parallel to the boundary line.

[0027] 〔5〕 The vehicle lamp according to any one of the above-mentioned items 1 to 4, characterized in that

[0028] The reflectors have a structure in which the reflection surface is divided into a plurality of reflection regions, and the reflection direction of light incident on each reflection region is controlled.

[0029] 〔6〕 The vehicle lamp according to any one of the above-mentioned items 1 to 5, characterized in that

[0030] The plurality of light sources are arranged on the same face of the same substrate, and emit light radially toward the same direction.

[0031] Effects of the Invention

[0032] As described above, according to the present application, a vehicle lamp in which light emission is aesthetically good can be provided. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a front view showing the structure of a vehicle lamp according to one embodiment of the present application.

[0034] Figure 2 is a sectional view of the vehicle lamp based on the line segment A-A shown in Figure 1

[0035] Figure 3 is a perspective view showing the structure of a reflector frame when the vehicle lamp shown in Figure 1 is viewed from the side.

[0036] Figure 4 is a front view for explaining the division of the reflection surface by the boundary line of the light emission region constituted by the reflection surfaces of the plurality of reflectors shown in Figure 1

[0037] Figure 5 is a front view for explaining the relationship between the boundary line of the light emission region constituted by the reflection surfaces of the plurality of reflectors shown in Figure 1 and the optical axis of light emitted from each light source.

[0038] Figure 6 is a front view for explaining the division of the reflection surface by the boundary line of the light emission region constituted by the reflection surfaces of the plurality of reflectors shown in

[0039] Figure 7 is a view for explaining the division of the reflection surface by the boundary line of the light emission region constituted by the reflection surfaces of the plurality of reflectors in the related art, Figure 7 ​​(A) is a front view in the case where the shapes of the reflecting surfaces coincide with each other, Figure 7 (B) is a front view in the case where the shapes of the reflecting surfaces differ from each other.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] 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 - reflecting surface; 10a - reflecting region; L - light; E - light emitting region; S - boundary line; S' - extension line; P - intersection; AX - optical axis. DETAILED DESCRIPTION

[0042] Hereinafter, an embodiment of the present application will be described in detail with reference to the drawings.

[0043] Further, in the drawings used in the following description, in order to easily observe each structural element, sometimes the scale of the size is changed according to the structural element, and the size ratio and the like of each structural element are not necessarily the same as the actual ones.

[0044] As one embodiment of the present application, for example, a vehicle lamp 1 shown in FIG. 1 will be described. Figures 1-5

[0045] Further, Figure 1 is a front view showing the structure of the vehicle lamp 1. Figure 2 is a cross-sectional view of the vehicle lamp 1 based on the line segment A-A shown in FIG. 2. Figure 1 is a perspective view showing the structure of the reflector frame 6A when the vehicle lamp 1 is viewed from the side. Figure 3 is a front view for explaining the division of the reflecting surface 9 by each boundary line S of the light emitting region E composed of the reflecting surfaces 10 of the plurality of reflectors 6. Figure 4 is a front view for explaining the relationship between each boundary line S of the light emitting region E composed of 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. Figure 5

[0046] In addition, in the drawings shown below, an XYZ orthogonal coordinate system is set, and the X-axis direction is set as the front-rear direction (lengthwise direction) of the vehicle lamp 1, the Y-axis direction is set as the left-right direction (widthwise direction) of the vehicle lamp 1, and the Z-axis direction is set as the up-down direction (heightwise direction) of the vehicle lamp 1.

[0047] As shown in FIG. 1, Figure 1 and Figure 2 ​​As shown, the vehicle lamp 1 of the present embodiment is applied to a brake lamp (stop lamp) that emits red light at the time of braking in a rear combination lamp mounted on both corner portions (in the present embodiment, the corner portion on the left rear end side) of the rear end side of a vehicle (not shown).

[0048] Further, in the following description, unless specifically described, "front", "rear", "left", "right", "upper", "lower" and the like indicate respective directions when the vehicle lamp 1 is viewed from the front (the rear of the vehicle). Thus, respective directions when the vehicle is viewed from the front (the front of the vehicle) are directions opposite to the front, rear, left and right.

[0049] Further, in the following description, the number of components such as light sources, reflectors and the like is exemplified, and the number, division ratio and the like of these components can be appropriately adjusted according to the situation in which the present application is applied.

[0050] Specifically, the vehicle lamp 1 is disposed on the inner side of a lamp body 2 that constitutes the rear combination lamp. The lamp body 2 is constituted by a housing 3 that is open at the front and an outer lens (cover lens) 4 that covers the opening of the housing 3.

[0051] In the lamp body 2, the outer lens 4 has a shape that is curved toward a direction in which the outer side is more retracted than the inner side in the width direction (hereinafter, referred to as "vehicle width direction") of the vehicle, in cooperation with the inclined shape imparted to the corner portion on the rear end side of the vehicle.

[0052] The vehicle lamp 1 of the present embodiment, as a brake lamp, has a shape that is curved toward a direction in which the outer side is more retracted than the inner side in the vehicle width direction. Further, when the vehicle lamp 1 is viewed from the front, it has a shape that is curved toward the obliquely upper side from the inner side toward the outer side in the vehicle width direction and is curved as a whole into a substantially L shape.

[0053] Further, regarding the shape of the lamp body 2 and the brake lamp, it is not necessarily limited to such a shape and can be appropriately changed according to the design of the vehicle or the like.

[0054] The vehicle lamp 1 of the present embodiment has a structure in which a plurality of (8 in the present embodiment) light sources 5, a plurality of (8 in the present embodiment) reflectors 6, an inner lens 7 and an extension portion 8 are disposed on the inner side of the lamp body 2.

[0055] The plurality of light sources 5 are constituted by light emitting diodes (LEDs) that emit red light (hereinafter, referred to as "light") L. The plurality of light sources 5 are arranged and mounted in one direction (in the present embodiment, the vehicle width direction) on one side (in the present embodiment, the lower surface) of a plurality of (2 in the present embodiment) circuit boards 9A, 9B on which a driving circuit that drives the LEDs is provided. Further, the plurality of light sources 5 can be arranged and disposed at equal intervals in one direction or the like.

[0056] Multiple circuit boards 9A and 9B are arranged in two layers, upper and lower, to match the shape of the brake light. On the lower circuit board 9A, six light sources 5 are arranged along the vehicle width direction. On the upper circuit board 9B, two light sources 5 are arranged along the vehicle width direction. Furthermore, the upper circuit board 9B is positioned offset outwards relative to the lower circuit board 9A in the vehicle width direction.

[0057] Each circuit board 9A and 9B is arranged at an angle upwards and outwards from the inside in the vehicle width direction. As a result, each light source 5 emits light L radially in a direction perpendicular to one side of each circuit board 9A and 9B (in this embodiment, downwards). That is, these multiple light sources 5 are arranged on the same surface of the same circuit boards 9A and 9B, emitting light L radially in the same direction.

[0058] Furthermore, circuit boards 9A and 9B are configured to have a driving circuit for driving the LEDs. However, circuit boards 9A and 9B can also be configured to have a mounting board with LEDs and a circuit board with driving circuits respectively, and these mounting boards and circuit boards are electrically connected by wiring cables called wire harnesses to protect the driving circuits from the heat emitted by the LEDs.

[0059] like Figure 1 , Figure 2 and Figure 3 As shown, multiple reflectors 6 are arranged in two layers, upper and lower, to match the shape of the brake light, and are integrated into one unit by interconnected reflector frames 6A.

[0060] The reflector frame 6A is composed of a reflective component with a reflective film, such as an aluminum vapor-deposited film, provided on its inner surface. The reflector frame 6A, in accordance with the shape of the brake light described above, has a curved shape in which the outer side is recessed from the inner side in the vehicle width direction. Furthermore, when viewed from the front, the reflector frame 6A has a shape that curves obliquely upwards and outwards from the inner side in the vehicle width direction, forming an approximately L-shape overall.

[0061] The lower reflector 6 is located below the lower circuit board 9A, and six of them are arranged along the vehicle width direction, corresponding to the six light sources 5 mounted on the circuit board 9A. On the other hand, the upper reflector 6 is located below the upper circuit board 9B, and two of them are arranged along the vehicle width direction, corresponding to the two light sources 5 mounted on the circuit board 9B.

[0062] Each reflector 6 has, for example, a concave parabolic reflection surface (hereinafter referred to as "reflection surface") 10 that is formed by cutting a portion of a rotation paraboloid having a center (light emitting point) of each light source 5 as a focal point. In addition, an opening portion 6a that passes light L emitted from the light source 5 toward the reflection surface 10 is provided at an upper portion of each reflector 6.

[0063] Each reflector 6 has a multi-reflector structure that divides the reflection surface 10 into a plurality of reflection regions 10a. Thereby, each reflector 6 can control a reflection direction of light L incident to each reflection region 10a, and can reflect light L incident to the reflection surface 10 diffusely in the vehicle width direction.

[0064] As shown in Figs. 1 and 2, the vehicle lamp 1 according to the present embodiment includes a plurality of light sources 5, a plurality of reflectors 6, an inner lens 7, and an extension 8. Figure 1 and Figure 2 The inner lens 7 is configured of a light-transmissive member of red color, and is disposed so as to cover the front side of the reflector frame 6A in cooperation with the shape of the brake lamp described above.

[0065] That is, the inner lens 7 has a shape that is curved toward a direction in which the outer side in the vehicle width direction is more retracted than the inner side. In addition, when viewed from the front, the inner lens 7 has a shape that is curved toward the obliquely upper side from the inner side to the outer side in the vehicle width direction, and is curved as a whole into a substantially L shape.

[0066] The inner lens 7 causes light L reflected by the reflection surfaces 10 of the plurality of reflectors 6 to be incident from the back side to the inside, and then causes the light L to be emitted to the outside from the front side. Thereby, in the vehicle lamp 1 according to the present embodiment, the front side of the inner lens 7 can be used as a light emitting surface 7a of the brake lamp, and red light can be emitted.

[0067] As shown in Figs. 1 and 2, the vehicle lamp 1 according to the present embodiment includes a plurality of light sources 5, a plurality of reflectors 6, an inner lens 7, and an extension 8. Figure 2 The extension 8 is configured of a light-shielding member of color (for example, black color), and has an opening portion 8a that corresponds to the light emitting surface 7a of the inner lens 7. The extension 8 is disposed so as to cover the periphery of the light emitting surface 7a of the inner lens 7. Thereby, the extension 8 shields light L emitted from the light emitting surface 7a of the inner lens 7.

[0068] In addition, in the vehicle lamp 1 according to the present embodiment, as shown in Figs. 1 and 2, when viewed from the front, the reflection surfaces 10 of the plurality of reflectors 6 constitute one light emitting region E. Figure 4

[0069] Specifically, when viewed from the front, the light emitting region E has a shape that is curved toward the obliquely upper side from the inner side to the outer side in the vehicle width direction, and is curved as a whole into a substantially L shape, in cooperation with the shape of the light emitting surface 7a of the inner lens 7 described above.

[0070] ​In the light emitting region E, six reflecting surfaces 10 of the lower layer of the reflector 6 are arranged in one direction (hereinafter, referred to as "left-right direction"). In addition, two reflecting surfaces 10 of the upper layer of the reflector 6 are arranged in the left-right direction. Furthermore, the reflecting surfaces 10 arranged in the left-right direction are arranged in two rows in another direction (hereinafter, referred to as "up-down direction") intersecting the one direction.

[0071] The light emitting region E is formed so that the extension lines S' of the respective boundary lines S of the reflecting surfaces 10 arranged in the left-right direction, which are extended toward the direction in which the light source 5 is located (in this embodiment, upward), intersect at one intersection point P. The extension lines S' divide the light emitting region E as the respective boundary lines S of the reflecting surfaces 10 arranged in the left-right direction.

[0072] In addition, the light emitting region E is formed so that the extension lines S' of the respective boundary lines S of the reflecting surfaces 10 arranged in the left-right direction, which are extended toward the direction in which the light source 5 is located, intersect at one intersection point P. The extension lines S' divide the light emitting region E as the respective boundary lines S of the reflecting surfaces 10 arranged in the up-down direction.

[0073] Furthermore, the light emitting region E is formed so that the adjacent angles θ of the extension lines S' arranged radially from the intersection point P are equal to each other. The extension lines S' divide the light emitting region E as the respective boundary lines S of the reflecting surfaces 10 arranged in the left-right direction and the reflecting surfaces 10 arranged in the up-down direction.

[0074] In other words, the light emitting region E is constituted so that a part of the plurality of extension lines S' extending radially from one intersection point P located on the side opposite to the reflector 6 with respect to the light source 5 toward the light source 5 side is divided as the respective boundary lines S of the reflecting surfaces 10 arranged in the left-right direction and the reflecting surfaces 10 arranged in the up-down direction.

[0075] As a method of dividing the light emitting region E by the plurality of boundary lines S, for example, there is a method of dividing the light emitting region E by a part of the extension lines S' equally spaced between the extension lines S' of the boundary lines S located at both ends in the left-right direction of the light emitting region E, with the intersection point P in which the extension lines S' intersect as a reference. In addition, there is a method of dividing the light emitting region E by arranging the extension lines S' radially from the intersection point P in which the extension lines S' of the boundary lines S located at both ends in the left-right direction of the reflecting surfaces 10 of the upper layer of the light emitting region E are extended, by bisecting the extension lines S' twice, and by the angles after the bisecting. The extension lines S' are arranged radially from the intersection point P.

[0076] In addition, in the vehicle lamp 1 of this embodiment, as shown in FIG. 1, the light emitting region E is formed so that the respective boundary lines S of the reflecting surfaces 10 arranged in the left-right direction and the reflecting surfaces 10 arranged in the up-down direction are arranged in a grid pattern. Figure 5As shown, when the plurality of reflectors 6 (light emitting region E) is observed from the front, the optical axis AX of the light L emitted from each light source 5 is not parallel to the boundary line S of each reflecting surface 10.

[0077] As described above, in the vehicle lamp 1 of the present embodiment, even if the shape of the light emitting surface 7a of the brake light is matched and the light emitting region E composed of the reflecting surfaces 10 of the plurality of reflectors 6 becomes an irregular shape, by dividing each boundary line S of the reflecting surfaces 10 described above, each reflecting surface 10 constituting the light emitting region E can be made to have a shape that has a sense of unity. Thus, the beauty of the light emission in the light emitting region E (light emitting surface 7a of the brake light) can be made good.

[0078] Further, in the vehicle lamp 1 of the present embodiment, by making each reflecting surface 10 constituting the light emitting region E described above have a shape that has a sense of unity, it is possible to suppress the occurrence of dark portions in a portion (for example, a corner portion or the like) of the light emitting region E and to make the light emitting region E emit light more uniformly.

[0079] Further, the present application is not necessarily limited to the above-described embodiments and various modifications can be made within the scope of the present application without departing from the gist thereof.

[0080] For example, for the trapezoidal light emitting region E as shown, the boundary lines S of the reflecting surfaces 10 can be divided in a left-right symmetrical manner using a portion of the extension lines S' that divide the extension lines S' between the left and right ends of the light emitting region E at equal intervals, with reference to the intersection point P of the extension lines S' after the extension of the boundary lines S. Figure 6 Further, with respect to the light emitting region E described above, the structure in which the angles θ of the adjacent extension lines S' arranged radially from the intersection point P are equal to each other is not necessarily limited, and a structure in which the angles θ of the adjacent extension lines S' arranged radially from the intersection point P gradually (regularly) change can also be employed.

[0081] With respect to the light emitting region E described above, which is configured to divide the boundary lines S of the reflecting surfaces 10 using a portion of the straight extension lines S' arranged radially from the intersection point P, it can also be configured to divide the boundary lines S of the reflecting surfaces 10 using a portion of the curved extension lines S' arranged radially from the intersection point P. Further, with respect to the light emitting region E described above, it is also possible to divide the boundary lines S of the reflecting surfaces 10 using a portion of the straight extension lines S' arranged radially from the intersection point P and to make the shape of the reflecting surfaces 10 within the divided region regularly different from the straight boundary lines S (for example, curved or the like).

[0082]

[0083] ​In addition, in the above embodiment, the case where the application is applied to the brake lamp constituting the above rear combination lamp is exemplified, but in the case where the cover lamp is included adjacent to the rear combination lamp, it is preferable to divide each boundary line S of the above reflection surface 10 with the boundary line of the rear combination lamp and the cover lamp as a reference. Thereby, it is possible to make each reflection surface 10 constituting the light emitting region E into a shape having a uniform feeling between the rear combination lamp and the cover lamp.

[0084] Furthermore, in the above embodiment, the case where the application is applied to the brake lamp constituting the above rear combination lamp is exemplified, but the vehicle lamp to which the application is applied is not limited to the above rear vehicle lamp, and the application can be applied to a front vehicle lamp.

[0085] That is, the vehicle lamp to which the application is applied is not limited to the above brake lamp, and the application can be widely applied to a vehicle lamp in which, for example, a plurality of reflectors of a tail lamp, a turn lamp, a back-up lamp, a cover lamp, a head lamp, a position lamp, a sub head lamp, a front (rear) fog lamp, a daytime running lamp, and the like are observed in the front, and the reflection surfaces of the plurality of reflectors constitute one light emitting region.

[0086] In addition, as for the above light source, a light emitting element such as a laser diode (LD) or the like can be used in addition to the above LED. In addition, as for the color of the light emitted from the light source, it is not limited to the above red light, and can be appropriately changed to white light, orange light, or the like according to the use of the vehicle lamp.

Claims

1. A vehicle lamp characterized by comprising: Having: a plurality of light sources arranged in one direction; and a plurality of reflectors each provided corresponding to the plurality of light sources, including a reflecting surface that reflects light emitted from the light source toward a front surface side, at least a portion of the plurality of reflectors is arranged in the one direction and another direction intersecting the one direction, whereby, when the plurality of reflectors is viewed from the front surface side, the reflecting surfaces of the plurality of reflectors are arranged in the one direction and the other direction, constituting one light emitting region, the light emitting region is formed in such a manner that extension lines of each boundary line of the reflecting surfaces arranged in the one direction, which are extended toward a direction in which the light sources are located, intersect at one intersection point, the extension lines dividing the light emitting region as each boundary line of the reflecting surfaces arranged in the one direction and the other direction.

2. The vehicle lamp according to claim 1, wherein the light emitting region is formed in such a manner that adjacent angles of the extension lines, which are arranged radially from the intersection point, are equal to each other, the extension lines dividing the light emitting region as each boundary line of the reflecting surfaces arranged in the one direction.

3. The vehicle lamp according to claim 1 or 2, wherein when the plurality of reflectors is viewed from the front surface side, an optical axis of the light emitted from the light source is not parallel to the boundary line.

4. The vehicle lamp according to claim 1 or 2, wherein the reflector has a structure that divides the reflecting surface into a plurality of reflecting regions, and controls a reflection direction of light incident to each reflecting region.

5. The vehicle lamp according to claim 1 or 2, wherein the plurality of light sources are arranged on the same surface of the same substrate, and emit light radially toward the same direction.

Images