LIGHTING DEVICE

• US 20130033881A1
• Filed: 03/28/2011
• Published: 02/07/2013
• Est. Priority Date: 04/20/2010
• Status: Abandoned Application

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Terazawa, Noriaki, Tsutsumi, Yasuki
• Application Number:
  US13/642,133
• Publication Number:
  US 20130033881A1
• Time in Patent Office: Days
• US Class Current: 362/382
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21V 25/02 coming into action when lighting device is disturbed, dismounted, or broken
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device includes: a light source module; a heat dissipation section accommodating a power-source circuit section for driving the light source module; and a base provided on a part of the heat dissipation section, wherein a cavity is formed in each of the heat dissipation section and the base, and a gas layer exists around circuit components such as a power-source circuit component and a heat generation component of the power-source circuit section, and at least the cavity of the base is filled with a thermosetting resin.

Claims

1-5. -5. (canceled)

6. A lighting device comprising:

a light source;

a main body accommodating a drive circuit section for driving the light source; and

a base provided on a part of the main body,

wherein a cavity is formed in each of the main body and the base, and

at least the cavity of the base is filled with a resin so that a gas layer exists around a circuit component of the drive circuit section.

7. The lighting device according to claim 6,

wherein the resin is a hardening resin.

8. The lighting device according to claim 6,

further comprising an insulator for electrically insulating the main body and the base from each other,

wherein a reinforcement member is provided in the insulator.

9. The lighting device according to claim 8,

wherein a retaining section for retaining the reinforcement member projects from an inner side of the insulator.

10. The lighting device according to claim 8,

wherein the drive circuit section comprises a board on which the circuit component is mounted, and

the insulator and the reinforcement member are each provided with an engagement concave for engaging with a part of the board.

11. The lighting device according to claim 8,

wherein the reinforcement member has a bottomed cylindrical shape, and is provided at a bottom thereof with a hole through which an electric wire for connecting the drive circuit section to the base is inserted, and

a part of the electric wire corresponding to the hole is covered with a protection tube.

12. The lighting device according to claim 6,

wherein the light source is mounted on the main body, and the main body dissipates heat emitted from the light source.

13. The lighting device according to claim 6,

wherein the light source is an LED.