# US 9,039,220 B2 · Light source device and display device

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- Number: US 9,039,220 B2
- Document ID: US9039220B2
- Status: Granted
- Kind: B2
- Application number: 14/098,215
- Filed: 2013-12-05
- Published: 2014-04-10
- Granted: 2015-05-26
- Earliest claimed: 2009-05-22
- Assignees: Sharp Kabushiki Kaisha
- Applicants: Sharp Kabushiki Kaisha
- Inventors: Hideto Takeuchi; Hiroshi Takahashi; Tatsuo Sugahara; Keita Ito; Toshiyuki Fujita; Yuuki Kawamura; Kenzo Toshiyuki; Kenichiro Ito; Kazuki Nakamichi; Tomoo Sasaki; Kenta Moribe; Mamoru Yahata
- Web page: https://patentgrep.com/patent/US9039220B2

## CPC

- F21V 5/04: of lens shape
- G02F 1/133603: {with LEDs}
- G02F 1/133605: {including specially adapted reflectors}
- F21V 7/00: Reflectors for light sources (characterised by cooling arrangements F21V29/505)
- G02F 2201/46: Fixing elements
- F21V 13/04: the elements being reflectors and refractors {(for vehicle rear lights F21S43/40)}
- F21V 17/06: the fastening being onto or by the lampholder
- F21V 21/00: Supporting, suspending, or attaching arrangements for lighting devices (F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00); Hand grips
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

A light source device includes a circuit board having a light-emitting element mounted on a one surface; a support body positioned on the other surface side of the circuit board for supporting the circuit board; a rivet having a head portion, which is positioned on a side of the one surface of the circuit board and cannot be inserted into a first through hole provided on the circuit board and the support body, and a shaft portion having a tip side stopped and held on the support body in a penetration via the first through hole; and a reflection sheet arranged on the one surface of the circuit board for reflecting light. The light source device provides a second through hole having a diameter larger or smaller than the diameter of the head portion at the position corresponding to the head portion on the reflection sheet.

## Claims

### Claim 1

A light source device, comprising:
a circuit board having a light-emitting element mounted on a one surface;
a support body positioned on the other surface side of the circuit board for supporting the circuit board;
a rivet having a head portion which is positioned on a side of the one surface of the circuit board and cannot be inserted into a first through hole provided on the circuit board and the support body, and a shaft portion linked to the head portion and having a tip side stopped and held on the support body in a penetration via the first through hole; and
a reflection sheet arranged on the one surface of the circuit board for reflecting light,
wherein a lens for diffusing light of the light-emitting element is disposed apart from the circuit board, the rivet being provided to be adjacent to the lens,
a second through hole having a diameter larger or smaller than the diameter of the head portion is provided at the position corresponding to the head portion on the reflection sheet, and
the rivet is inserted from the one surface side of the circuit board into the second through hole provided on the reflection sheet.

### Claim 2 (depends on 1)

The light source device according to claim 1, wherein
a third through hole having a diameter larger than the diameter of the lens is provided at the position corresponding to the lens on the reflection sheet, and
the second through hole is linked to the third through hole, has a diameter larger than the diameter of the head portion and forms an elongated hole shape extending in a direction where the rivet and lens are adjacent to each other.

### Claim 3 (depends on 1)

The light source device according to claim 1, wherein the shaft portion includes:
a cylindrical part having an outside diameter in which it can be inserted into the first through hole, having one of ends provided with a flange portion which cannot be inserted into the first through hole, and having an inside diameter of the other end which is smaller than an inside diameter of the one end; and
a shaft part which can be inserted into the one of the ends of the cylindrical part and has a diameter larger than the inside diameter of the other end, and
wherein the head portion is provided on one of the ends of the shaft part.

### Claim 4 (depends on 1)

A display device, comprising:
a display portion having a display surface on one side; and
the light source device according to claim 1 arranged on the other side of the display portion.