Circuit board fixing structure and light irradiation device having same

Patent metadata

Field	Value
Publication number	US-11909158-B2
Application number	US-202016775232-A
Country	US
Kind code	B2
Filing date	Jan 28, 2020
Priority date	Jan 30, 2019
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

Provided is a small-sized circuit board fixing structure capable of enabling a circuit board on a base to be easily replaced. A circuit board fixing structure configured to fix a circuit board onto a surface of a base includes a wire pattern formed on a surface of the circuit board, a first through hole penetrating from a front surface to a rear surface of the circuit board, a second through hole penetrating from a front surface to a rear surface of the base so as to communicate with the first through hole, an electrode penetratively inserted into the second through hole, and a fixing member engaged with the electrode mounted on the surface of the circuit board and configured to fix the circuit board to the base, in which when the fixing member and the electrode are engaged, the wire pattern and the electrode are electrically connected through the fixing member.

First claim

The invention claimed is:

1. A circuit board fixing structure configured to fix a circuit board onto a surface of a base, the circuit board fixing structure comprising:
a wire pattern formed on a surface of the circuit board;
a first through hole penetrating from a front surface to a rear surface of the circuit board;
a second through hole penetrating from a front surface to a rear surface of the base so as to communicate with the first through hole;
an electrode penetratively inserted into the second through hole; and
a fixing member engaged with the electrode mounted on the surface of the circuit board and configured to fix the circuit board to the base, wherein when the fixing member and the electrode are engaged, the wire pattern and the electrode are electrically connected through the fixing member;
wherein, when the electrode is mounted in the second through hole, a tip of the electrode is positioned on substantially a same plane as the front surface of the base, and a base end of the electrode is disposed to protrude from the rear surface of the base.

2. The circuit board fixing structure of claim 1 , wherein an end of the electrode at a side of the circuit board is fitted with the first through hole.

3. The circuit board fixing structure of claim 2 , wherein the base has conductivity and wherein the circuit board fixing structure further has, in the second through hole, an insulating member configured to insulate the electrode and the base.

4. The circuit board fixing structure of claim 3 , wherein the multiple electrodes are provided, and the insulating member is formed to support the multiple electrodes.

5. The circuit board fixing structure of claim 1 , wherein the base has conductivity and wherein the circuit board fixing structure further has, in the second through hole, an insulating member configured to insulate the electrode and the base.

6. The circuit board fixing structure of claim 5 , wherein the multiple electrodes are provided, and the insulating member is formed to support the multiple electrodes.

7. The circuit board fixing structure of claim 1 , wherein the base has insulation.

8. The circuit board fixing structure of claim 1 , wherein the fixing member is a screw, and the electrode has a screw hole thread-coupled to the screw.

9. The circuit board fixing structure of claim 1 , wherein the base is a heat sink configured to cool the circuit board.

10. The circuit board fixing structure of claim 1 , wherein the rear surface of the circuit board is in contact with the front surface of the base.

11. A light irradiation device comprising:
a circuit board fixing structure configured to fix a circuit board onto a surface of a base; and
multiple light emitting elements disposed on the circuit board,
wherein the circuit board fixing structure comprises,
a wire pattern formed on a surface of the circuit board;
a first through hole penetrating from a front surface to a rear surface of the circuit board;
a second through hole penetrating from a front surface to a rear surface of the base so as to communicate with the first through hole;
an electrode penetratively inserted into the second through hole; and
a fixing member engaged with the electrode mounted on the surface of the circuit board and configured to fix the circuit board to the base, wherein when the fixing member and the electrode are engaged, the wire pattern and the electrode are electrically connected through the fixing member;

wherein, when the electrode is mounted in the second through hole, a tip of the electrode is positioned on substantially a same plane as the front surface of the base, and a base end of the electrode is disposed to protrude from the rear surface of the base.

12. The light irradiation device of claim 11 , wherein light emitted from the light emitting element is light having a wavelength in an ultraviolet region.

13. The light irradiation device of claim 11 , wherein an end of the electrode at a side of the circuit board is fitted with the first through hole.

14. The light irradiation device of claim 13 , wherein the base has conductivity and wherein the circuit board fixing structure further has, in the second through hole, an insulating member configured to insulate the electrode and the base.

15. The light irradiation device of claim 14 , wherein the multiple electrodes are provided, and the insulating member is formed to support the multiple electrodes.

16. The light irradiation device of claim 11 , wherein the base has conductivity and wherein the circuit board fixing structure further has, in the second through hole, an insulating member configured to insulate the electrode and the base.

17. The light irradiation device of claim 16 , wherein the multiple electrodes are provided, and the insulating member is formed to support the multiple electrodes.

18. The light irradiation device of claim 11 , wherein the base has insulation.

19. The light irradiation device of claim 11 , wherein the fixing member is a screw, and the electrode has a screw hole thread-coupled to the screw.

20. The light irradiation device of claim 11 , wherein the base is a heat sink configured to cool the circuit board.

Assignees

• Hoya Candeo Optronics Corp
• Hoya Corp

Inventors

• Watanabe Hiroaki
• Ashida Katsumi

Classifications

• H01R43/015 Primary

  Handtools · CPC title

• H01R4/26

  Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact ({H01R4/188, H01R4/203, H01R4/5075 take precedence}; using shape memory materials H01R4/01) · CPC title

• H05K1/0203

  Cooling of mounted components (H05K1/0272 takes precedence) · CPC title

• H05K1/111

  Pads for surface mounting, e.g. lay-out · CPC title

• H05K1/181

  associated with surface mounted components · CPC title