Light source device

Patent metadata

Field	Value
Publication number	US-12025880-B2
Application number	US-202318360747-A
Country	US
Kind code	B2
Filing date	Jul 27, 2023
Priority date	Mar 8, 2019
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A light source device includes light sources arranged on a substrate in a matrix, and a reflective member. The reflective member includes first walls respectively surrounding the light sources, and defining first regions, and second walls located on an outer side of the first walls, and defining second regions each having an opening facing outside of the reflective member. The reflective member defines a pair of first sides parallel to one of a vertical direction and a lateral direction in a plan view, the pair of first sides being constituted by a part of the reflective member including at least one of the first walls and the first regions, and a second side inclined or curved with respect to the pair of first sides, the second side being constituted by a part of the reflective member including at least one of the second walls and the second regions.

First claim

The invention claimed is:

1. A light source device comprising:
a plurality of light sources;
a substrate on which the light sources are arranged in a matrix; and
a reflective member including
first walls respectively surrounding the light sources, and defining first regions each surrounded by the first walls, and
second walls located on an outer side of the first walls, and defining second regions each having an opening facing outside of the reflective member, at least one of the second regions including a corresponding one of the light sources, wherein

the reflective member defines
a pair of first sides parallel to one of a vertical direction and a lateral direction in a plan view, the pair of first sides being constituted by a part of the reflective member including at least one of the first walls and the first regions, and
a second side inclined or curved with respect to the pair of first sides, the second side being constituted by a part of the reflective member including at least one of the second walls and the second regions.

2. The light source device according to claim 1 , wherein
each of the second regions has at least a half of an area of each of the first regions.

3. The light source device according to claim 1 , wherein
at least one of the pair of first sides is partially constituted by at least one of the second regions.

4. The light source device according to claim 1 , wherein
the second side is partially constituted by a third region having an area smaller than a half of an area of each of the first regions.

5. The light source device according to claim 1 , wherein
the pair of first sides have the same length.

6. The light source device according to claim 5 , wherein
the reflective member further defines a pair of third sides parallel to the vertical direction and having the same length, and
the pair of first sides are parallel to the lateral direction.

7. The light source device according to claim 1 , wherein
the reflective member has an octagon shape in the plan view.

8. The light source device according to claim 1 , wherein
the second walls further define third regions each having an area smaller than a half of an area of each of the first regions, and
the third regions are not arranged next to each other in the vertical direction, the lateral direction, or an oblique direction in the plan view.

9. The light source device according to claim 1 , wherein
the reflective member defines a plurality of through holes respectively located at centers of the first regions, and
the light sources are respectively disposed inside the through holes in the plan view.

10. The light source device according to claim 1 , wherein
each of the light sources has a batwing light distribution characteristic.

Assignees

• Nichia Corp

Inventors

• Hashimoto Toshiyuki
• Sasaoka Shimpei

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• B60K35/50

  Instruments characterised by their means of attachment to or integration in the vehicle (B60K35/231 takes precedence) · CPC title

• B60K35/60

  Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) · CPC title

• B60K35/21

  using visual output, e.g. blinking lights or matrix displays · CPC title

• B60K35/22

  Display screens · CPC title