Wide-Range Reflective Structure

• US 20120201034A1
• Filed: 04/19/2012
• Published: 08/09/2012
• Est. Priority Date: 09/25/2009
• Status: Abandoned Application

• Current Assignee: Chia-Mao Li
• Original Assignee: Chia-Mao Li
• Inventors: LI, CHIA-MAO
• Application Number:
  US13/451,529
• Publication Number:
  US 20120201034A1
• Time in Patent Office: Days
• US Class Current: 362/345
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• 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 2131/103 of streets or roads
• CPC Class Codes: F21W 2131/107 of the exterior of buildings
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A wide-range reflective structure comprises a reflective case, a heat-sink metal frame, a heat conductive plate, and one control member for directing light beams. The heat conductive plate defines a recess for holding the heat-sink metal frame. The reflective case has a first inner curved reflective surface, a second inner curved reflective surface, a third inner curved reflective surface, and a fourth inner curved reflective surface. The reflective case is attached to the heat conductive plate, enclosing the heat-sink metal frame. The control member has two concave reflective surfaces. The first inner curved reflective surface has an inclination angle greater than the second inner curved reflective surface. The third inner curved surface has an inclination angle approximately equal to the fourth inner curved surface. As such, the inner curved reflective surfaces can cooperate with the control member to direct light beams from LEDs to a target more extensively and uniformly.

Claims

1. A wide-range reflective structure, which comprises a reflective case with optical characteristics for LEDs, a heat-sink metal frame, a heat conductive plate, and at least one control member for directing light beams, said heat conductive plate defining a recess for holding said heat-sink metal frame, said reflective case having a first inner curved reflective surface, a second inner curved reflective surface, a third inner curved reflective surface, and a fourth inner curved reflective surface, said first inner curved reflective surface being located opposite to said second inner curved surface, said third inner curved reflective surface being located opposite to said fourth inner curved surface, said inner curved reflective surfaces defining an inner space of said reflective case, said inner space including a top opening at a top of said reflective case and a bottom opening at a bottom of said reflective case, said reflective case being attached to said heat conductive plate, the bottom of said reflective case enclosing said heat-sink metal frame held in said slot of said heat conductive plate, said control member being provided in said reflective case, said control member having two concave reflective surfaces respectively corresponding to said third and fourth inner curved surfaces, said first inner curved reflective surface having an inclination angle greater than said second inner curved reflective surface, said first inner curved reflective surface allowing the light beams incident thereon to be reflected to cover a wide range in one dimension, while said second inner curved reflective surface allowing the light beams incident thereon to be reflected to cover a less range as compared with that of said first inner curved reflective surface, said third inner curved surface being located symmetrically with said fourth inner curved surface and having an inclination angle approximately equal to said fourth inner curved surface;

whereby said inner curved reflective surfaces can cooperate with said control member to direct light beams from LEDs, which are disposed on said heat-sink metal frame, at an angle to a target and create a wide, intensive, and uniform illuminating area for the target.

2. The wide-range reflective structure of claim 1, wherein said heat-sink metal frame is provided with light-guiding surfaces each with optical characteristics for LEDs.

3. The wide-range reflective structure of claim 1, wherein two opposite sides of said reflective case each defines a slot to allow said control member to be fixed onto said reflective case

4. The wide-range reflective structure of claim 1, wherein said control member is provided with at least one fixing protrusion for fixing said control member onto said reflective case.

5. The wide-range reflective structure of claim 1, which is applied to street lighting.