Medical lighting apparatus

• US 20070041167A1
• Filed: 06/13/2006
• Published: 02/22/2007
• Est. Priority Date: 08/19/2005
• Status: Abandoned Application

• Current Assignee: Dai-Ichi Shomei Co., Ltd.
• Original Assignee: Dai-Ichi Shomei Co., Ltd.
• Inventors: Nachi, Akio
• Application Number:
  US11/451,364
• Publication Number:
  US 20070041167A1
• Time in Patent Office: Days
• US Class Current: 362/33
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21V 14/04 by movement of reflectors in vehicle head lamps F21S41/675
• CPC Class Codes: F21V 17/02 with provision for adjustment F21V17/04 - F21V17/08 take precedence
• CPC Class Codes: F21V 19/02 with provision for adjustment, e.g. for focusing
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 21/403 for operation or dentist lamps
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/06 with parabolic curvature
• CPC Class Codes: F21W 2131/205 for operating theatres
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A medical lighting apparatus includes single or plural LED units. Each of the LED units comprises a plurality of concave reflecting surfaces and an LED element disposed in front of each of the reflecting surface so as to radiate light toward each of the reflecting surfaces. Each of the LED units is arranged so that the lights radiated from its LED elements are reflected by the reflecting surfaces, emerge outside and are superimposed on one another on an area to be illuminated, respectively, while illuminating the area. The LED elements of each of the LED units comprise a combination of different emitting colors so as to enhance the color rendering properties.

Claims

1. A medical lighting apparatus comprising single or plural LED units;

each of said LED units comprising;

a plurality of concave reflecting surfaces; and

an LED element disposed in front of each of said reflecting surfaces so as to radiate light toward each of said reflecting surfaces;

each of said LED units being arranged so that the lights radiated from said LED elements are reflected by said reflecting surfaces, emerge outside and are superimposed on one another on an area to be illuminated, respectively, while illuminating said area; and

said LED elements of each of said LED units comprising a combination of different emitting colors so as to enhance the color rendering properties.

2. A medical lighting apparatus as set forth in claim 1, said combination of different emitting colors of said LED elements in each of said LED units is white, blue and red.

3. A medical lighting apparatus as set forth in claim 1, further comprising an LED supporting member supporting said LED element, and heatsink plates extending radially from said LED supporting member, said heatsink plates being arranged to extend widthwise in the plane substantially parallel to the optical axis of said concave reflecting surface.

4. A medical lighting apparatus comprising:

a main body;

a plurality of LED units supported by said main body around the axis of said main body, tiltable relative to the axis of said main body;

a focusing member mounted on said main body; and

a focus adjusting linkage mechanism, interposed between said LED units and said focusing member, for changing the angles of inclinations of said LED units relative to said axis of said main body in synchronization with each other so as to shift the focus of lights emerging outside from said LED units when said focusing member is operated;

each of said LED units comprising;

a plurality of concave reflecting surfaces; and

an LED elements disposed in front of each of said reflecting surfaces so as to radiate light toward each of said reflecting surfaces;

each of said LED units being arranged so that the lights radiated from said LED elements are reflected by said reflecting surfaces, emerge outside and are superimposed on one another on an area to be illuminated, respectively, while illuminating said area; and

said LED elements of each of said LED units comprising a combination of different emitting colors so as to enhance the color rendering properties.

5. A medical lighting apparatus as set forth in claim 4, said- combination of different emitting colors of said LED elements in each of said LED units is white, blue and red.

6. A medical lighting apparatus as set forth in claim 4, further comprising an LED supporting member supporting said LED element, and heatsink plates extending radially from said LED supporting member, said heatsink plates being arranged to extend widthwise in the plane substantially parallel to the optical axis of said concave reflecting surface.