BULB-TYPE LED LAMP HAVING REPLACEABLE LIGHT SOURCE MODULE

• US 20130063945A1
• Filed: 09/12/2011
• Published: 03/14/2013
• Est. Priority Date: 09/12/2011
• Status: Abandoned Application

• Current Assignee: Chaun-Choung Technology Corp. (Nidec Corporation)
• Original Assignee: Chaun-Choung Technology Corp. (Nidec Corporation)
• Inventors: WU, Huei-Jan, Hsu, Zu-Chao
• Application Number:
  US13/230,780
• Publication Number:
  US 20130063945A1
• Time in Patent Office: Days
• US Class Current: 362/249.02
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• 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 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A bulb-type LED lamp having a replaceable light source module includes a lamp head module, a lamp casing module and a light source module. The lamp head module has an electrical-conductive connection portion. One end of the lamp casing module is connected to the lamp head module. The light source module comprises a substrate, a plurality of LEDs electrically connected to the substrate, and a sleeve disposed in the lamp casing module to be electrically connected to the substrate. The sleeve has an electrical-conductive insertion portion assembled with the electrical-conductive connection portion. By this structure, a damaged light source module can be replaced rapidly. A user needs not to by a new whole set lamp so as to save the cost maintenance. Further, a surface thermal contact is generated between the metallic pressing plate and the heat-conducting plate to increase the heat-conducting area and efficiency.

Claims

1. A bulb-type LED lamp having a replaceable light source module, including:

a lamp head module having an electrical-conductive connection portion;

a lamp casing module with its one end connected to the lamp head module; and

a light source module comprising a substrate, a plurality of LEDs electrically connected to the substrate, and a sleeve disposed in the lamp casing module to be electrically connected to the substrate, the sleeve having an electrical-conductive insertion portion, the electrical-conductive insertion portion being assembled with the electrical-conductive connection portion.

2. The bulb-type LED lamp having a replaceable light source module according to claim 1, wherein the lamp head module comprises a threaded head and a connecting piece connected to the threaded head, the threaded head has a first contact and a second contact, the electrical-conductive connection portion is formed on the connecting piece and comprises an electrical-conductive ring and an electrical-conductive post electrically insulated from the electrical-conductive ring, the electrical-conductive post is electrically connected to the first contact, and the electrical-conductive ring is electrically connected to the second contact.

3. The bulb-type LED lamp having a replaceable light source module according to claim 2, wherein the electrical-conductive insertion portion comprises a threaded post and a connecting post electrically insulated from the threaded post, the electrical-conductive ring is provided with an inner thread, the threaded post and the inner thread are threadedly connected with each other to from electrical connection, and the connecting post abuts against the electrical-conductive post to form electrical connection.

4. The bulb-type LED lamp having a replaceable light source module according to claim 3, wherein the lamp casing module comprises a heat-dissipating body and a heat-conducting plate brought into thermal contact with the heat-dissipating body, the light source module further comprises a metallic pressing plate extending from an end of the sleeve, and the metallic pressing plate supports the substrate and is brought into thermal contact with the heat-conducting plate.

5. The bulb-type LED lamp having a replaceable light source module according to claim 4, wherein the upper edge of the connecting piece is formed with a plurality of protrusions, the lower edge of the heat-dissipating body is formed with a lower folded flange, the lower folded flange is formed with a plurality of notches, the protrusions pass through the notches to be assembled with the heat-dissipating body, the upper edge of the heat-dissipating body is formed with an upper folded flange for allowing the heat-conducting plate to be disposed thereon, and the heat-conducting plate is provided with a through-hole for allowing the sleeve to be disposed through.

6. The bulb-type LED lamp having a replaceable light source module according to claim 4, wherein the heat-dissipating body is formed into a cylindrical shape, an outer surface of the heat-dissipating body is assembled with a plurality of heat-dissipating fins, an end of each of the heat-dissipating fins is bent to form a folded flange, and the heat-conducting plate is disposed on the folded flanges of the heat-dissipating fins.

7. The bulb-type LED lamp having a replaceable light source module according to claim 4, wherein the heat-conducting plate and the heat-dissipating body are made by aluminum extrusion to form one body, a plurality of heat-dissipating fins extend from an outer surface of the heat-dissipating body, and the heat-conducting plate has a through-hole for allowing the sleeve to be disposed through.

8. A bulb-type LED lamp having a replaceable light source module, including:

a lamp head module having an electrical-conductive connection portion; and

a light source module comprising a substrate, a plurality of LEDs electrically connected to the substrate, and a sleeve electrically connected to the substrate, the sleeve having an electrical-conductive insertion portion, the electrical-conductive insertion portion being assembled with the electrical-conductive connection portion.

9. The bulb-type LED lamp having a replaceable light source module according to claim 8, wherein the lamp head module comprises a threaded head and a connecting piece connected to the threaded head, the threaded head has a first contact and a second contact, the electrical-conductive connection portion is formed on the connecting piece and comprises an electrical-conductive ring and an electrical-conductive post electrically insulated from the electrical-conductive ring, the electrical-conductive post is electrically connected to the first contact, and the electrical-conductive ring is electrically connected to the second contact.

10. The bulb-type LED lamp having a replaceable light source module according to claim 9, wherein the electrical-conductive insertion portion comprises a threaded post and a connecting post electrically insulated from the threaded post, the electrical-conductive ring is provided with an inner thread, the threaded post and the inner thread are threadedly connected with each other to from electrical connection, and the connecting post abuts against the electrical-conductive post to form electrical connection.