Lighting device

Abstract

To provide a lighting device that includes two light sources used for different applications.SOLUTION: A lighting device includes: a substrate 110 including a first surface 111 and a second surface 112 opposite to the first surface 111; a first light source 120 disposed on the first surface 111; a second light source 130 disposed on the second surface 112; and a second wiring pattern 150 disposed on the second surface 112. The second wiring pattern 150 is disposed so as to cover a region A12 on the second surface 112 opposite to a region A11 on the first surface 111 on which the first light source 120 is disposed.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a lighting device. [Background technology]

[0002] Patent Document 1 discloses an illumination device including two light emitters used for different purposes: a first light emitter 13A used as an illumination for illuminating a charging port, and a second light emitter 13B used as an indicator. In the illumination device disclosed in Patent Document 1, the first light emitter 13A is provided on the front side of the substrate 7, and the second light emitter 13B is provided on the back side of the substrate 7. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-42051 A Summary of the Invention [Problem to be solved by the invention]

[0004] The substrate is generally an insulator such as resin or glass, and transmits light. When light sources are arranged on both sides of the substrate, as in the lighting device disclosed in Patent Document 1, it may happen that the light from the light source arranged on the front side passes through the substrate and reaches the back side of the substrate. As a result, it may happen that the user mistakenly believes that the light source arranged on the back side is on, even though the light source arranged on the back side is not on. In such a case, for example, as in the lighting device disclosed in Patent Document 1, when the light source arranged on the back side is a light source used as an indicator, it may happen that the user mistakenly believes that the indicator is on, even though the light source arranged on the back side is not lit.

[0005] Therefore, an object of the present invention is to provide an illumination device having two light sources that can be used for different purposes. [Means for solving the problem]

[0006] In order to solve the above problem, an illumination device according to one embodiment of the present invention comprises a substrate having a first surface and a second surface opposite to the first surface, a first light source arranged on the first surface, a second light source arranged on the second surface, and a second wiring pattern arranged on the second surface, wherein the second wiring pattern is arranged so as to cover an area on the second surface opposite to the area on the first surface where the first light source is arranged. Effect of the Invention

[0007] According to the present invention, it is possible to provide a lighting device equipped with two light sources for different applications. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 illustrates an illumination device 100 according to an embodiment of the present invention. [Diagram 2] 1 is a diagram of a substrate 110 viewed from a first surface 111 side. [Diagram 3] 1 is a view of the substrate 110 as seen from the second surface 112 side. [Figure 4] 4 is a cross-sectional view of the substrate 110 taken along the line AA in FIGS. [Diagram 5] 4 is a cross-sectional view of the substrate 110 taken along the line BB in FIGS. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Lighting device 100> 1 is a diagram showing an illumination device 100 according to an embodiment of the present invention. The illumination device 100 has a substrate 110, a first light source 120, a second light source 130, a first wiring pattern 140, and a second wiring pattern 150. The illumination device 100 is, for example, an illumination device for illuminating a charging port (charging inlet) of a vehicle.

[0010] The substrate 110 is a plate-like member and has a first surface 111 and a second surface 112 opposite to the first surface 111. The substrate 110 is an insulator (e.g., resin or glass) and transmits light. Fig. 2 is a diagram of the substrate 110 viewed from the first surface 111 side, Fig. 3 is a diagram of the substrate 110 viewed from the second surface 112 side, Fig. 4 is a cross-sectional view of the substrate 110 taken along line AA in Figs. 2 and 3, and Fig. 5 is a cross-sectional view of the substrate 110 taken along line BB in Figs. 2 and 3.

[0011] The first light source 120 and the second light source 130 are light sources that emit light, such as LEDs (Light-Emitting Diodes). The first light source 120 is disposed on a first surface 111 of the substrate 110 as shown in Figures 2 and 4, and the second light source 130 is disposed on a second surface 112 of the substrate 110 as shown in Figures 3-5.

[0012] For example, the use of the first light source 120 and the use of the second light source 130 are different from each other. For example, the first light source 120 is a light source for illumination, and the use of the second light source 130 is a light source for an indicator. For example, when the lighting device 100 is a lighting device for illuminating a charging port of a vehicle, the first light source 120 is a light source for illuminating the charging port, and the second light source 130 is a light source for an indicator showing the charging state of the vehicle (for example, the charging state of a battery (for example, a main battery) of the vehicle).

[0013] The first wiring pattern 140 is a wiring pattern for electrically connecting components (including the first light source 120) arranged on the first surface 111 of the substrate 110. The first wiring pattern 140 is arranged on the first surface 111 of the substrate 110 so as to be in contact with the first surface 111, as shown in FIGS.

[0014] The second wiring pattern 150 is a wiring pattern for electrically connecting components (including the second light source 130) arranged on the second surface 112 of the substrate 110. The second wiring pattern 150 is arranged on the second surface 112 of the substrate 110 so as to be in contact with the second surface 112, as shown in FIG.

[0015] The first wiring pattern 140 and the second wiring pattern 150 are conductors, for example, patterns of metal foil (for example, copper foil). The materials of the first wiring pattern 140 and the second wiring pattern 150 may be the same as each other or different from each other.

[0016] In the lighting device 100 in this embodiment, the second wiring pattern 150 is arranged so as to cover the area A12 on the second surface 112 facing the area A11 on the first surface 111 in which the first light source 120 is arranged. Therefore, as shown in FIG. 4, the light emitted from the first light source 120 to the substrate 100 side is blocked by the second wiring pattern 150. That is, in this embodiment, even if the light emitted from the first light source 120 to the substrate 100 side passes through the substrate, the transmitted light is blocked by the second wiring pattern 150. Therefore, in this embodiment, for example, by providing a member (for example, the cover member 9 disclosed in Patent Document 1) for preventing the light from the first light source 120 from wrapping around to the second surface 112 side of the substrate 100, it is possible to prevent the light from the first light source 120 from reaching the second surface 112 side of the substrate 100.

[0017] As described above, in this embodiment, it is possible to prevent light from the first light source 120 from reaching the second surface 112 side of the substrate 100. Therefore, in this embodiment, it is possible to prevent the second light source 130 side (the second surface 112 side of the substrate 110) from illuminating when the second light source 130 is not illuminating. Therefore, in this embodiment, the user recognizes that the second light source 130 is on only when the second light source 130 is on, and does not recognize that the second light source 130 is on when the second light source 130 is not illuminating.

[0018] Therefore, for example, in this embodiment, when the first light source 120 is a light source for illumination and the second light source 130 is a light source for an indicator, even if the light source for illumination (the first light source 120) is turned on, the user can correctly recognize the display of the indicator (the display by the second light source 130). As a result, in this embodiment, it is possible to provide a lighting device equipped with two light sources used for different purposes.

[0019] In addition, in the lighting device 100 in this embodiment, the first wiring pattern 140 is arranged so as to cover the area A22 on the first surface 111 facing the area A21 on the second surface 112 in which the second light source 130 is arranged. Therefore, as shown in FIG. 5, the light emitted from the second light source 130 to the substrate 100 side is blocked by the first wiring pattern 140. That is, in this embodiment, even if the light emitted from the second light source 130 to the substrate 100 side passes through the substrate, the transmitted light is blocked by the first wiring pattern 140. Therefore, in this embodiment, for example, by providing a member (for example, the cover member 9 disclosed in Patent Document 1) for preventing the light from the second light source 130 from wrapping around to the first surface 111 side of the substrate 100, it is possible to prevent the light from the second light source 130 from reaching the first surface 111 side of the substrate 100.

[0020] As described above, in this embodiment, it is possible to prevent light from the second light source 130 from reaching the first surface 111 side of the substrate 100. Therefore, in this embodiment, it is possible to prevent the first light source 120 side (the first surface 111 side of the substrate 110) from illuminating when the first light source 120 is not illuminating. Therefore, in this embodiment, the user recognizes that the first light source 120 is lit only when the first light source 120 is lit, and does not recognize that the first light source 120 is lit when the first light source 120 is not lit.

[0021] The first light source 120 may be a light source for an indicator showing first information, and the second light source 130 may be a light source for an indicator showing second information different from the first information. Even if this is done, in this embodiment, the user can correctly recognize both the display of the indicator showing the first information (display by the first light source 120) and the display of the indicator showing the second information (display by the second light source 130).

[0022] The present invention has been described above in terms of preferred embodiments thereof. Although the present invention has been described herein with reference to specific examples, various modifications and variations can be made to these examples without departing from the spirit and scope of the present invention as set forth in the claims. [Explanation of symbols]

[0023] 100 Lighting Equipment 110 Substrate 111 First surface of substrate 110 112 Second surface of substrate 110 120 First Light Source 130 Second Light Source 140 First wiring pattern 150 Second wiring pattern

Claims

1. a substrate having a first surface and a second surface opposite to the first surface; a first light source disposed on the first surface; a second light source disposed on the second surface; a second wiring pattern disposed on the second surface; A lighting device, wherein the second wiring pattern is arranged so as to cover an area on the second surface opposite an area on the first surface in which the first light source is arranged.

2. a first wiring pattern disposed on the first surface; The lighting device according to claim 2 , wherein the first wiring pattern is arranged so as to cover an area on the first surface that faces an area on the second surface in which the second light source is arranged.

3. The lighting device according to claim 1 , wherein a use of the first light source and a use of the second light source are different from each other.

4. The lighting device according to claim 3 , wherein the second light source is a light source for an indicator.

5. The lighting device according to claim 4 , wherein the first light source is a light source for illumination.

6. The lighting device is a lighting device for illuminating a charging port of a vehicle, the first light source is a light source for illuminating a charging port of the vehicle, The lighting device according to claim 5 , wherein the second light source is a light source for an indicator that shows a charging state of the vehicle.

7. the first light source is a light source for an indicator showing first information, The lighting device according to claim 2 , wherein the second light source is a light source for an indicator that indicates second information different from the first information.

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