LAMP

• US 20120062095A1
• Filed: 10/22/2010
• Published: 03/15/2012
• Est. Priority Date: 09/15/2010
• Status: Active Grant

• Current Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Original Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Inventors: HORNG, Alex
• Granted Patent: US 8,541,932 B2
• Time in Patent Office: Days
• US Class Current: 313/46
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21V 29/67 characterised by the arrangement of fans
• 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: F21Y 2103/33 annular
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lamp includes a heat dissipater having a base and an engaging member. The base includes a first air guiding portion and a fixing portion. The engaging member is mounted to an outer periphery of the base. A second air guiding portion is formed between the engaging member and the base. A lighting element is mounted to the base of the heat dissipater. A housing is engaged with the engaging member of the heat dissipater. The housing and the heat dissipater together define a compartment in communication with the first and second air guiding portions. A cooling fan is mounted to the fixing portion of the base. A circuit board is mounted in the compartment and electrically connected to the lighting element and the cooling fan. The circuit board is electrically connected to an electrically conductive member having an end extending out from the housing.

Claims

1. A lamp comprising:

a heat dissipater including a base and an engaging member, with the base including a first air guiding portion and a fixing portion, with the engaging member mounted to an outer periphery of the base, with a second air guiding portion formed between the engaging member and the base;

a lighting element mounted to the base of the heat dissipater;

a housing engaged with the engaging member of the heat dissipater, with the housing and the heat dissipater together defining a compartment in communication with the first and second air guiding portions;

a cooling fan mounted to the fixing portion of the base; and

a circuit board mounted in the compartment and electrically connected to the lighting element and the cooling fan, with the circuit board electrically connected to an electrically conductive member having an end extending out from the housing.

2. The lamp as claimed in claim 1, with the base including a seat and an annular wall formed along an outer periphery of the seat, with the first air guiding portion including at least one passageway formed between an adjoining area between the seat and the annular wall or formed in a central portion of the seat.

3. The lamp as claimed in claim 2, with the engaging member including an engaging ring, with the engaging ring connected to the annular wall by a plurality of connecting ribs, with the second air guiding portion including a plurality of passageways formed between the plurality of connecting ribs.

4. The lamp as claimed in claim 2, with the engaging member including a plurality of protrusions formed on an outer periphery of the annular wall, with the second air guiding portion including a plurality of passageways formed between the plurality of protrusions.

5. The lamp as claimed in claim 2, with the engaging member including a flange, with a plurality of support blocks extending from an outer surface of the flange, with the second air guiding portion including a plurality of radial passageways formed between the plurality of support blocks.

6. The lamp as claimed in claim 5, with an arcuate guide face formed between an adjoining area between the flange of the engaging member and the annular wall of the base.

7. The lamp as claimed in claim 1, with the cooling fan including a fan housing, with the fan housing including a block portion formed on an outer periphery of the fan housing, with the block portion engaged with the base.

8. The lamp as claimed in claim 1, with the housing including a first end and a second end, with the first end having an opening, with the second end having a through-hole, with the opening having an end edge fixed to the engaging member, with the end of the electrically conductive member extending out of the housing via the through-hole.

9. A lamp comprising:

a heat dissipater including a base and an engaging member, with the base including a first air guiding portion and a fixing portion, with the engaging member mounted to an outer periphery of the base;

a lighting element mounted to the base of the heat dissipater;

a housing engaged with the engaging member of the heat dissipater, with the housing including a second air guiding portion, with the housing and the heat dissipater together defining a compartment in communication with the first and second air guiding portions;

a cooling fan mounted to the fixing portion of the base; and

a circuit board mounted in the compartment and electrically connected to the lighting element and the cooling fan, with the circuit board electrically connected to an electrically conductive member having an end extending out from the housing.

10. The lamp as claimed in claim 9, with the base including a seat and an annular wall formed along an outer periphery of the seat, with the first air guiding portion including at least one passageway formed between an adjoining area between the seat and the annular wall or formed in a central portion of the seat.

11. The lamp as claimed in claim 10, with the second air guiding portion including a plurality of through-holes extending through the housing.

12. The lamp as claimed in claim 9, with the cooling fan including a fan housing, with the fan housing including a block portion formed on an outer periphery of the fan housing, with the block portion engaged with the base.

13. The lamp as claimed in claim 9, with the housing including a first end and a second end, with the first end having an opening, with the second end having a through-hole, with the opening having an end edge fixed to the engaging member, with the end of the electrically conductive member extending out of the housing via the through-hole.