Lighting Apparatus Having Excellent Air Purifying Property

• US 20090291029A1
• Filed: 06/12/2007
• Published: 11/26/2009
• Est. Priority Date: 06/13/2006
• Status: Abandoned Application

• Current Assignee: OSAKA Titanium Technologies Co., Ltd.
• Original Assignee: OSAKA Titanium Technologies Co., Ltd.
• Inventors: Matsuo, Toshiaki, Mitani, Yoji, Shimosaki, Shinji, Azuma, Kazuomi, Ogasawara, Tadashi
• Application Number:
  US12/308,107
• Publication Number:
  US 20090291029A1
• Time in Patent Office: Days
• US Class Current: 422/122
• CPC Class Codes: A61L 2209/12 Lighting means
• CPC Class Codes: A61L 9/18 Radiation A61L9/22 takes precedence
• CPC Class Codes: A61L 9/205 using a photocatalyst or photosensitiser
• CPC Class Codes: B01J 35/39 Photocatalytic properties
• CPC Class Codes: G09F 13/00 Illuminated signs; Luminous advertising G09F9/00, G09F11/00 take precedence; control of displays in general using static means to present variable information G09G

Abstract

A full spectrum light emitting lamp and one or more translucent base bodies surrounding the lamp are disposed in the lighting apparatus, the one or more translucent bas bodies having a photocatalytic reaction layer which bears a photocatalyst made of a titanium dioxide thin film therein, or the one or more translucent base bodies having the photocatalytic reaction layer which bears the photocatalyst made of the titanium dioxide thin film therein and having infrared light-absorbing functions, and a space through which air can flow is formed between the lamp and the translucent base body. Therefore, an ultraviolet light, a visible light and an infrared light can effectively be utilized according to characteristics such as an air purifying function of the ultraviolet light, a lighting function of the visible light, and a heating function of the infrared light to thereby save optical energy emitted from the lamp. Further, forced convection is generated in the air flow space by a heating effect of the infrared light emitted from the lamp in addition to a heating effect of the optical energy emitted from the lamp, so that the air can sufficiently be ventilated to promote an air purifying effect.

Claims

1. A lighting apparatus having an excellent air purifying property, comprising:

a lamp emitting light which is included in ultraviolet spectral, visible spectral and infrared spectral wavelength ranges;

two or more translucent base bodies surrounding the lamp; and

a space between the lamp and the translucent base body to enable air to flow therethrough,

wherein a photocatalytic reaction layer which bears a photocatalyst made of a titanium dioxide thin film is formed in at least one of the translucent base bodies, and at least one of the translucent base bodies has an infrared light-absorbing function.

2. The lighting apparatus having an excellent air purifying property according to claim 1, wherein photocatalytic reaction layers are formed in all the translucent base bodies.

3. The lighting apparatus having an excellent air purifying property according to claim 1, wherein all the translucent base bodies have infrared light-absorbing functions.

6. The lighting apparatus having an excellent air purifying property according to claim 1, wherein the photocatalytic reaction layer exerts photocatalysis activity by an ultraviolet light in the light emitted from the lamp.

7. The lighting apparatus having an excellent air purifying property according to claim 1, wherein the photocatalytic reaction layer exerts photocatalysis activity by an ultraviolet light and a visible light in the light emitted from the lamp.

8. The lighting apparatus having an excellent air purifying property according to claim 1, wherein the infrared light-absorbing function is exerted by an infrared light-absorbing material applied on a surface of the translucent base body.

9. The lighting apparatus having an excellent air purifying property according to claim 1, wherein the infrared light-absorbing function is exerted by a function borne in the translucent base body.

10. The lighting apparatus having an excellent air purifying property according to claim 1, wherein the air flow space is provided between the lamp and the translucent base body and between the translucent base bodies themselves, and is formed such that the air can flow into and out of the lamp.

11. The lighting apparatus having an excellent air purifying property according to claim 10, wherein the air flows into and out of the lamp from the lower side toward the upper side of the lighting apparatus by updraft action generated by the infrared light-absorbing function.

12. The lighting apparatus having an excellent air purifying property according to claim 1, wherein a visible light transmitted through the translucent base body in the light emitted from the lamp is used for lighting.

13. The lighting apparatus having an excellent air purifying property according to claim 1, wherein an outermost base body among the translucent base bodies is used for decoration or advertisement.

4. (canceled)

5. (canceled)