Rotating lamp

• US 7,712,909 B2
• Filed: 02/21/2006
• Issued: 05/11/2010
• Est. Priority Date: 04/14/2005
• Status: Expired due to Fees

• Current Assignee: Digital Electronics Corporation
• Original Assignee: Canadian Recreation Products, Inc.
• Inventors: Nobayashi, Isao
• Primary Examiner(s): O'Shea; Sandra L
• Assistant Examiner(s): ULANDAY, MEGHAN K
• Application Number:
  US11/911,328
• Publication Number:
  US 20090091914A1
• Time in Patent Office: 1,540 Days
• Field of Search: 362/35, 362/269, 362/271, 362/277, 362284-285, 362/296.01, 362/545
• US Class Current: 362/35
• CPC Class Codes: B60Q 1/2611 Indicating devices mounted on the roof of the vehicle
• CPC Class Codes: B60Q 1/2696 Mounting of devices using LEDs
• CPC Class Codes: F21S 10/06 flashing, e.g. with rotating reflector or light source signalling lighting devices mounted on vehicles B60Q1/26
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 7/0025 Combination of two or more reflectors for a single light source array of reflectors for a cluster of light sources F21V7/0083
• CPC Class Codes: F21W 2107/10 for land vehicles
• CPC Class Codes: F21W 2111/00 Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A rotating lamp comprises a translucent globe, a shaft portion, arranged in the globe, made of a material containing metal, an LED device provided on the shaft portion, a rotatable support member rotatably set along the outer peripheral direction of the shaft portion, a reflecting mirror supported by the rotatable support member for reflecting light received from the LED device, a driving portion rotating/driving the rotatable support member and a heat radiating portion provided on the shaft portion. Thus, heat generated in LED devices can be discharged and a problem resulting from heat can be solved.

Claims

1. A rotating lamp comprising:

a translucent globe;

an LED (light-emitting diode) device arranged in said globe for serving as a light source;

a shaft portion that is made of metal and on which said LED device is set;

a reflecting mirror rotatably set along the outer peripheral direction of said shaft portion for reflecting light received from said LED device;

a driving portion rotating/driving said reflecting mirror; and

a heat radiating portion including a disc-like radiation fin made of metal, said heat radiating portion being provided on said shaft portion.

2. The rotating lamp according to claim 1, further comprising:

a rotatable support member rotatably set on the outer periphery of said shaft portion for supporting said reflecting mirror, and

a support plate supporting said rotatable support member and said shaft portion, wherein

said shaft portion and said support plate are made of a material containing metal.

3. The rotating lamp according to claim 1, wherein

said heat radiating portion is arranged upward beyond a part of said shaft portion mounted with said LED device.

4. The rotating lamp according to claim 3, wherein

the thickness of a region of said shaft portion located between a first part mounted with said LED device and a second part provided with said heat radiating portion is larger than the thickness of another region of said shaft portion located downward beyond said first part.

5. The rotating lamp according to claim 1, wherein

said shaft portion extends from the bottom to the top of said reflecting mirror, and

said heat radiating portion is arranged to reach a region located upward beyond said reflecting mirror.

6. The rotating lamp according to claim 1, wherein

said reflecting mirror is provided with a notch for receiving said heat radiating portion in said notch.

7. The rotating lamp according to claim 1, wherein

said shaft portion is hollowed for storing a lead wire supplying power to said LED device in said shaft portion.

8. The rotating lamp according to claim 1,

wherein

said shaft portion has a flange on one end thereof,

said flange is fixed to the upper wall of said globe, and

said heat radiating portion is arranged upward beyond a part of said shaft portion mounted with said LED device.

9. The rotating lamp according to claim 8, wherein

said flange and said shaft portion are made of a material containing metal.

10. The rotating lamp according to claim 1, wherein

said heat radiating portion has a plurality of radiation fins set on the outer periphery of said shaft portion to radially extend outward from said shaft portion.

11. A rotating lamp comprising:

a translucent globe;

an LED (light-emitting diode) device arranged in said globe for serving as a light source;

a shaft portion on which said LED device is set;

a reflecting mirror rotatably set along the outer peripheral direction of said shaft portion for reflecting light received from said LED device;

a driving portion rotating/driving said reflecting mirror; and

a heat radiating portion provided on said shaft portion,

wherein

said shaft portion has a flange on one end thereof,

said flange is fixed to the upper wall of said globe, and

said heat radiating portion is arranged upward beyond a part of said shaft portion mounted with said LED device.

12. The rotating lamp according to claim 11, wherein

said flange and said shaft portion are made of a material containing metal.