Light emitting device and game machine

Patent metadata

Field	Value
Publication number	US-11879631-B2
Application number	US-202017628587-A
Country	US
Kind code	B2
Filing date	Mar 9, 2020
Priority date	Sep 26, 2019
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

A right side portion, which is a light emitting device, comprises a side light guide plate and a front light guide plate as a plurality of light guide plates in which light is reflected by a prism and emitted from a light emitting surface. The side light guide plate and the front light guide plate are disposed in a row in a state in which the angles of the light emitting surfaces differ between adjacent light guide plates and the ends of adjacent light guide plates are butted against each other. An LED board is disposed at the end of the side light guide plate, and the end surface of one of the ends of the side light guide plate and the front light guide plate that are abutted against each other is formed as an inclined surface with a reflection function that changes the angle at which the light is guided and causes the light to be incident on the adjacent light guide plate.

First claim

The invention claimed is:

1. A light emitting device, comprising:
a light source unit; and
a plurality of light guide plates in which light, that is incident from an end and is guided through an interior, is reflected by a prism and is emitted from a light emitting surface,
wherein the plurality of light guide plates are disposed in a row in a state in which angles of the light emitting surfaces differ between adjacent light guide plates, and ends of adjacent light guide plates are butted against each other,
the light source unit is disposed at an end of a starting end light guide plate that is at one end of the plurality of light guide plates, on an opposite side from a side where the adjacent light guide plates are butted against each other, and
an end surface of one of ends that are butted against each other in the plurality of light guide plates is formed on an inclined surface with a reflection function configured to change an angle at which the light is guided and cause the light to be incident on the adjacent light guide plate.

2. The light emitting device according to claim 1 , wherein
the inclined surface with a reflection function is formed by providing a reflective film to an inclined surface.

3. The light emitting device according to claim 1 , wherein
the plurality of light guide plates have an elongated shape and the ends along a lengthwise direction are butted against each other.

4. The light emitting device according to claim 1 , wherein
a reflective film is provided on an end surface of an end on an opposite side from a side where adjacent light guide plates are butted against each other, in a final end light guide plate at an end on an opposite side from the starting end light guide plate, out of the plurality of light guide plates.

5. The light emitting device according to claim 1 , comprising, as the plurality of light guide plates, a first light guide plate serving as the starting end light guide plate and a second light guide plate that is adjacent to the first light guide plate,
wherein the light emitting surface of either the first light guide plate or the second light guide plate is disposed in a state of being warped into a curved surface,
the other of the first light guide plate and the second light guide plate has a shape corresponding to the warp at an end on a side that abuts with either the first light guide plate or the second light guide plate that is warped, and
the first light guide plate and the second light guide plate are butted together at an angle of 90 degrees.

6. A game machine comprising the light emitting device according to claim 1 .

Assignees

• Omron Tateisi Electronics Co

Inventors

• Onitsuka Hiroyuki
• Ono Takahiro
• Fujita Junya
• Kishimoto Jun
• Agata Takehiro

Classifications

• F21V33/008 Primary

  Leisure, hobby or sport articles, e.g. toys, games or first-aid kits; Hand tools; Toolboxes · CPC title

• F21V7/09

  with a combination of different curvatures · CPC title

• G02B6/0016

  Grooves, prisms, gratings, scattering particles or rough surfaces · CPC title

• G02B6/0078

  Side-by-side arrangements, e.g. for large area displays · CPC title

• F21V2200/20

  of light guides of a generally planar shape · CPC title