Lighting device

Abstract

A lighting device includes: a substrate having a first surface and a second surface opposite the first surface; a first light source disposed on the first surface; a second light source disposed on the second surface; and a second wiring pattern disposed on the second surface, in which the second wiring pattern is disposed to cover a region on the second surface, the region on the second surface facing a region on the first surface where the first light source is disposed.

Description

Technical Field

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

[0002] Patent document 1 discloses a lighting device including two light emitters for different purposes, namely, a first light emitter 13A and a second light emitter 13B, wherein the first light emitter 13A is used for lighting of a charging socket and the second light emitter 13B is used as an indicator. The lighting device disclosed in Patent document 1 is configured such that the first light emitter 13A and the second light emitter 13B are respectively disposed on the front and rear sides of a substrate 7.

[0003] Reference List

[0004] Patent Literature

[0005] Patent Document 1: JP 2023-42051A Summary of the invention

[0006] Typically, the substrate is made of an insulator such as resin and / or glass and is transparent to light. In the case where the light sources are arranged on two opposite surfaces of the substrate, as in the lighting device according to patent document 1, light from the light source on the front side can, for example, pass through the substrate to the rear side of the substrate. Therefore, although the light source on the rear side is not lit, the user may mistakenly believe that the light source on the rear side of the substrate is lit. For example, in the case where the light source on the rear side of the substrate is used as an indicator, as in the lighting device according to patent document 1, although the light source on the rear side does not emit light, the above situation may cause the user to mistakenly believe that the indicator is lit.

[0007] It is therefore an object of the present invention to provide a lighting device comprising two light sources for different purposes.

[0008] In order to achieve the above-mentioned purpose, an embodiment of the present invention relates to a lighting device, which includes: 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 to cover an area on the second surface, and the area on the second surface is opposite to the area on the first surface where the first light source is arranged.

[0009] The present invention can provide a lighting device comprising two light sources for different purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A lighting device 100 according to an embodiment of the present invention is shown;

[0011] Figure 2 1 shows a view of the substrate 110 viewed from the first surface 111 of the substrate 110;

[0012] Figure 3 1 shows a view of the substrate 110 viewed from the second surface 112 of the substrate 110;

[0013] Figure 4 Shown according to Figure 2 and Figure 3 A cross-sectional view of the substrate 110 along line AA; and

[0014] Figure 5 Shown according to Figure 2 and Figure 3 sectional view of the substrate 110 along line BB.

[0015] Reference Mark List

[0016] 100: Lighting device

[0017] 110: Substrate

[0018] 111: first surface of substrate 110

[0019] 112: second surface of substrate 110

[0020] 120: First Light Source

[0021] 130: Second light source

[0022] 140: First wiring pattern

[0023] 150: Second wiring pattern DETAILED DESCRIPTION

[0024] <Lighting device 100>

[0025] Figure 1 The lighting device 100 according to an embodiment of the present invention is shown. The lighting device 100 includes a substrate 110, a first light source 120, a second light source 130, a first wiring pattern 140 and a second wiring pattern 150. For example, the lighting device 100 is configured to illuminate a charging socket of a vehicle.

[0026] The substrate 110 is a plate-shaped member, and has a first face 111 and a second face 112 opposite to the first face 111. The substrate 110 is made of an insulator (eg, resin and / or glass) and is transparent to light. Figure 2 1 shows a view of the substrate 110 viewed from the first surface 111 side of the substrate 110, Figure 3 1 shows a view of the substrate 110 viewed from the second surface 112 of the substrate 110. Figure 4 Shown according to Figure 2and Figure 3 A cross-sectional view of the substrate 110 along line AA, and Figure 5 Shown according to Figure 2 and Figure 3 sectional view of the substrate 110 along line BB.

[0027] The first light source 120 and the second light source 130 are light sources for emitting light, such as LEDs (light emitting diodes). Figure 2 and Figure 4 As shown, the first light source 120 is disposed on the first surface 111 of the substrate 110. Figures 3 to 5 As shown, the second light source 130 is disposed on the second surface 112 of the substrate 110 .

[0028] For example, the first light source 120 and the second light source 130 are intended for different purposes. The first light source 120 is intended for, for example, lighting. The second light source 130 is intended for, for example, an indicator. For example, when the lighting device 100 is configured to illuminate a charging socket of a vehicle, the first light source 120 is configured to illuminate the charging socket of the vehicle, wherein the second light source 130 is intended for an indicator, which is configured to indicate the charging state of the vehicle (e.g., the charging state of a battery (e.g., a main battery) of the vehicle).

[0029] The first wiring pattern 140 is used to electrically connect components (including the first light source 120) arranged on the first surface 111 of the substrate 110. Figure 2 , Figure 4 and Figure 5 As shown, the first wiring pattern 140 is located on the first surface 111 of the substrate 110 such that the first wiring pattern 140 is in contact with the first surface 111 .

[0030] The second wiring pattern 150 is used to electrically connect components (including the second light source 130) arranged on the second surface 112 of the substrate 110. Figures 3 to 5 As shown, the second wiring pattern 150 is located on the second surface 112 of the substrate 110 , such that the second wiring pattern 150 is in contact with the second surface 112 .

[0031] The first wiring pattern 140 and the second wiring pattern 150 are made of an electrical conductor and are, for example, patterns of a metal foil such as a copper foil. The first wiring pattern 140 and the second wiring pattern 150 may be made of the same material or made of different materials.

[0032] The second wiring pattern 150 of the lighting device 100 according to the present embodiment is arranged to cover the area A12 on the second surface 112, which is opposite to the area A11 on the first surface 111 where the first light source 120 is arranged. In this way, the light emitted from the first light source 120 toward the substrate 110 is blocked by the second wiring pattern 150. Figure 4 As shown. This means that, according to the present embodiment, even when light emitted from the first light source 120 toward the substrate 110 passes through the substrate, the light is blocked by the second wiring pattern 150. According to the present embodiment, for example, by providing an element for preventing the light from the first light source 120 from reaching the second surface 112 side of the substrate 110 by detouring (for example, as the cover 9 disclosed in Patent Document 1), it is possible to prevent the light from the first light source 120 from reaching the second surface 112 side of the substrate 110.

[0033] In the above manner, the present embodiment can prevent the light from the first light source 120 from reaching the second surface 112 side of the substrate 110. Thus, when the second light source 130 does not emit light, the present embodiment can prevent the second light source 130 side (the second surface 112 side of the substrate 110) from being illuminated. Therefore, only when the second light source 130 is lit, the present embodiment can enable the user to recognize the fact that the second light source 130 is lit, wherein when the second light source 130 is not lit, the user will not recognize that the second light source 130 is lit.

[0034] Therefore, for example, when the first light source 120 is intended for lighting and the second light source 130 is intended for an indicator, the present embodiment enables the user to correctly recognize the indication of the indicator (indication of the second light source 130) even when the light source for lighting (the first light source 120) is lit. Therefore, the present embodiment can provide a lighting device including two light sources for different purposes.

[0035] In addition, the first wiring pattern 140 in the lighting device 100 according to the present embodiment is arranged to cover the area A22 on the first surface 111, and the area A22 on the first surface 111 is opposite to the area A21 on the second surface 112 where the second light source 130 is arranged. In this way, the light emitted from the second light source 130 toward the substrate 100 is blocked by the first wiring pattern 140, as shown in FIG. Figure 5 This means that, according to the present embodiment, even when the light emitted from the second light source 130 toward the substrate 100 passes through the substrate, the light is blocked by the first wiring pattern 140. According to the present embodiment, for example, by providing an element for preventing the light from the second light source 130 from reaching the first surface 111 side of the substrate 100 by detouring (for example, the cover 9 disclosed in Patent Document 1), it is possible to prevent the light from the second light source 130 from reaching the first surface 111 side of the substrate 100.

[0036] In the above manner, the present embodiment can prevent the light from the second light source 130 from reaching the first surface 111 side of the substrate 100. Thus, when the first light source 120 does not emit light, the present embodiment can prevent the first light source 120 side (the first surface 111 side of the substrate 100) from being illuminated. Therefore, only when the first light source 120 is lit, the present embodiment can enable the user to recognize the fact that the first light source 120 is lit, wherein when the first light source 120 is not lit, the user will not recognize that the first light source 120 is lit.

[0037] The first light source 120 may be a light source for an indicator configured to indicate first information, wherein the second light source 130 may be a light source for an indicator configured to indicate second information different from the first information. Also in this configuration, the present embodiment enables the user to correctly identify the indications of both the indicator for indicating the first information (indication via the first light source 120) and the indicator for indicating the second information (indication via the second light source 130).

[0038] The present invention has been described above by way of preferred embodiments. Although the present invention has been described herein by presenting specific examples, various modifications and changes may be made to such examples without departing from the spirit and scope of the present invention as set forth in the claims.

Claims

1. A lighting device, include: a substrate having a first side and a second side opposite to the first side; a first light source, the first light source being disposed on the first surface; a second light source, the second light source being disposed on the second surface; as well as a second wiring pattern, the second wiring pattern being arranged on the second surface, The second wiring pattern is arranged to cover an area on the second surface, and the area on the second surface is opposite to an area on the first surface where the first light source is arranged.

2. The lighting device according to claim 1, further comprising a first wiring pattern disposed on the first surface, in, The first wiring pattern is provided to cover a region on the first surface, the region on the first surface being opposite to a region on the second surface where the second light source is provided.

3. The lighting device according to claim 1 or 2, in, The first light source and the second light source are used for different purposes.

4. The lighting device according to claim 3, in, The second light source is used for an indicator.

5. The lighting device according to claim 4, in, The first light source is used for illumination.

6. The lighting device according to claim 5, in, The lighting device is a lighting device used to illuminate the charging socket of a vehicle, Wherein, the first light source is a light source for illuminating the charging socket of the vehicle, and Wherein, the second light source is a light source for an indicator, and the indicator is configured to indicate a charging status of the vehicle.

7. The lighting device according to claim 2, in, The first light source is a light source for an indicator, the indicator is configured to indicate first information, and The second light source is a light source for an indicator, and the indicator is configured to indicate second information different from the first information.

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