Light emitting device

Patent metadata

Field	Value
Publication number	US-12240378-B2
Application number	US-202217588593-A
Country	US
Kind code	B2
Filing date	Jan 31, 2022
Priority date	Feb 3, 2021
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A light emitting device to be mounted on a mount surface of a vehicular compartment includes a housing including a first section having an air intake hole and a second section having an air discharge hole, a cooling fan device arranged in the first section, and a light emitter arranged in the second section. The housing further includes a discharge cavity having the discharge hole. The light emitter and the cooling fan device are arranged in a first arrangement direction laterally along the mount surface. The light emitter includes a board member and a light emitting element. The board member has a first surface that is opposite the mount surface and a second surface that is an opposite surface of the first surface and on which the light emitting element is mounted. The first surface of the board member is defined as a portion of the discharge cavity.

First claim

The invention claimed is:

1. A light emitting device that is to be mounted on a mount surface of a vehicular compartment, the light emitting device comprising:
a housing having a box shape and including a first section that has an air intake hole and a second section that has an air discharge hole and includes a discharge cavity having the discharge hole;
a cooling fan device arranged in the first section; and
a light emitter arranged in the second section and arranged next to the cooling fan device in a first arrangement direction and laterally along the mount surface, the light emitter including
a board member having a first surface that is opposite the mount surface of the vehicular compartment and a second surface that is an opposite surface of the first surface, the first surface being defined as a portion of the discharge cavity, and
a first light emitting element mounted on the second surface of the board member.

2. The light emitting device according to claim 1 , wherein
the light emitter further includes a second light emitting element,
the board member includes a first board section on which the first light emitting element is mounted and a second board section on which the second light emitting element is mounted, and
the first board section and the second board section form an angle between the first board section and the second board section.

3. The light emitting device according to claim 2 , wherein the first board section and the second board section are next to each other in a second arrangement direction that cross the first arrangement direction.

4. The light emitting device according to claim 2 , wherein the first board section and the second board section are arranged in a width direction of a vehicle.

5. The light emitting device according to claim 2 , wherein
the first board section has a first connection edge and the second board section has a second connection edge that is connected to the first connection edge, and
the first board section and the second board section form an angle at the first connection edge and the second connection edge.

Assignees

• Toyota Boshoku Kk

Inventors

• Maekawa Motoki
• Usami Ryosuke
• Irie Masahiro
• Ishizu Yohei
• Sakoh Mitsutaka

Classifications

• A61L2103/75

  Room floors or walls · CPC title

• B60K35/50

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

• H10H20/858

  Means for heat extraction or cooling · CPC title

• B60Q3/59

  Lighting devices mounted in the vehicle interior and adapted for portability · CPC title

• B60Q3/51

  for mounting lighting devices onto vehicle interior, e.g. onto ceiling or floor · CPC title