LAMP DEVICE

• US 20100232168A1
• Filed: 03/13/2009
• Published: 09/16/2010
• Est. Priority Date: 03/13/2009
• Status: Active Grant

• Current Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Original Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Inventors: HORNG, Alex, Fang, I-Le
• Granted Patent: US 8,057,075 B2
• Time in Patent Office: Days
• US Class Current: 362/373
• 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: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 29/677 the fans being used for discharging
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lamp device includes a housing having first and second ends spaced in an axial direction. The housing further includes an air inlet portion and an air outlet portion. A circuit board is mounted in the housing and electrically connected to an electrical connection portion on the first end of the housing. The circuit board includes a substrate having first and second sides spaced in the axial direction and respectively facing the second and first ends of the housing. The circuit board further includes electronic elements. One of the electronic elements having the largest height in the axial direction is mounted on the first side. A heat dissipating module is mounted in the housing and between the air inlet portion and the air outlet portion. A lighting element is coupled to the heat dissipating module and electrically connected to the circuit board.

Claims

1. A lamp device comprising:

a housing including first and second ends spaced in an axial direction, with the first end including an electrical connection portion, with the second end including a light transmitting portion, with the housing further including an air inlet portion and an air outlet portion, with each of the air inlet portion and the air outlet portion extending from an inner periphery through an outer periphery of the housing;

a circuit board mounted in the housing and electrically connected to the electrical connection portion, with the circuit board including a substrate having first and second sides spaced in the axial direction, with the first side of the substrate facing the second end of the housing, with the second side of the substrate facing the first end of the housing, with the circuit board further including a plurality of electronic elements mounted on at least one of the first and second sides of the substrate, with each of the plurality of electronic elements having a height in the axial direction, with one of the plurality of electronic elements having the largest height in the axial direction being mounted on the first side and extending toward the second end of the housing;

a heat dissipating module mounted in the housing and between the air inlet portion and the air outlet portion; and

a lighting element coupled to the heat dissipating module and electrically connected to the circuit board.

2. The lamp device as claimed in claim 1, with the plurality of electronic elements mounted on the first side of the substrate.

3. The lamp device as claimed in claim 1, with the plurality of electronic elements mounted on the first and second sides of the substrate.

4. The lamp device as claimed in claim 1, with the housing including an inner wall having a positioning portion at the first end of the housing, and with the second side of the substrate coupled to the positioning portion.

5. The lamp device as claimed in claim 4, with the positioning portion including a plurality of pegs formed on the inner wall, with the lamp device further comprising, in combination:

a plurality of fasteners extending through the substrate into the plurality of pegs.