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  System using radiation of far infrared ray for heat releaseRelated Patent Categories: Heat Exchange, Heat TransmitterThe Patent Description & Claims data below is from USPTO Patent Application 20060086494. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED PATENT APPLICATION [0001] This application claims the benefit under 35 U.S.C. .sctn.119(a) of Korean Patent Application Nos. 10-2004-0085090, filed on Oct. 23, 2004, and 10-2005-0000221, filed on Jan. 13, 2005, in the Korean Intellectual Property Office, the entire disclosures of both of which are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a system having a heat source unit. More particularly, the present invention relates to a system for releasing heat generated at a heat source unit by using radiation of a far infrared ray. [0004] 2. Description of the Related Art [0005] In general, an optical scanning unit, such as a laser scanning unit (LSU) is used in an image forming apparatus for reproducing images on sheets such as a copy machine, a printer, a facsimile machine, and the like. An optical scanning unit forms electrostatic latent images by scanning a beam emitted from a light source, such as a laser diode, based on image signals to a photoreceptor medium of an image forming apparatus by using a rotating polygonal mirror, which is rotated by a driving motor. [0006] Images are reproduced by transferring latent images formed on the photoreceptor medium to a medium, such as paper. Generally, optical elements forming the optical scanning unit are assembled on one frame. [0007] When an image forming apparatus, for example, a laser printer, outputs images for a long time, the inner temperature of an optical scanning unit increases due to heat from circuit units of a semiconductor laser and a driving motor for rotating polygonal mirror, heat generated by friction between air and the rotating polygonal mirror, and heat from a printer main body. When the inner temperature of the optical scanning unit increases, a frame and members for fixing lenses are slightly transformed. Thus, the alignment of optical elements may be deviated and an optical performance may be deteriorated by the changes in the inner refractive indexes and curvatures of lenses. More specifically, the changes in the inner refractive indexes and curvatures of the lenses cause the change in a focus distance, the increase in a beam diameter on an image plane, and the generation of vertical stain patterns. [0008] In a conventional method, a metal frame, such as aluminum, having an excellent thermal conductivity is used or a heat sink is used to emit the heat to the outside through conduction and convection, in order to reduce the increase in the temperature of the image forming apparatus. [0009] Japanese Laid-open Patent No. 2001-142023 discloses an optical scanning unit having an aluminum frame and sealing a rotating polygonal mirror and driving motor unit for preventing noise of the driving motor. In this case, a heat sink, which has heat sink fins connected from the inside of the optical scanning unit to the outside of the optical scanning unit, is used at a portion generating heat in order to release heat from the sealed area. [0010] However, the heat sink fins connected from the inside to the outside of the optical scanning unit limits the reduction of the size of an image forming apparatus, such as a laser printer or a copy machine. [0011] Such a method of using a heat sink or a cooling fan limits the ability to reduce the size of an apparatus and also increases the cost of the apparatus. SUMMARY OF THE INVENTION [0012] Embodiments of the present invention provide a system for releasing heat to the outside without increasing the inner temperature of the system by converting the heat generated from a heat source into a far infrared ray and releasing the far infrared ray. [0013] According to an aspect of the present invention, there is provided a system comprising a heat source unit, and a first heat releasing member arranged on the heat source unit or at a location near the heat source unit for converting heat into an infrared ray and radiating the far infrared ray. [0014] The system may further comprise a housing containing the heat source unit, wherein an air layer is disposed between the housing and the heat source unit or the heat source unit contacts the housing. [0015] The system may further comprise a second heat releasing member arranged on an inner wall of the housing for converting the far infrared ray into heat. [0016] The system may further comprise a third heat releasing member arranged on an outer wall of the housing for converting heat, which is converted by the second heat releasing member and conducted through the housing, into the far infrared ray and radiating the ray to the outside. [0017] The system may further comprise a fourth heat releasing member arranged on an outer wall of the housing near the heat source unit for converting the heat, which is generated by the heat source unit and conducted through the housing, into the far infrared ray and radiating the far infrared ray. [0018] The first through fourth heat releasing members are preferably ceramic. [0019] The system may be any one of an optical scanning unit, an image forming apparatus having an optical scanning unit, an image forming apparatus having a fixing unit, and an image forming apparatus having an optical scanning unit and a fixing unit. [0020] According to another aspect of the present invention, there is provided an optical scanning unit comprising a beam deflector unit including a beam deflector for deflecting and scanning a light beam and a driving motor for rotating the beam deflector at a high speed. An optical unit includes a light source and an image forming optical system forms images from the deflected light beam. The light beam is transmitted from the light source to the beam deflector and scanned by the beam deflector unit. A main frame contains the beam deflector unit and the optical unit. A sub-frame surrounds the beam deflector unit to reduce noise generated by the beam deflector unit in the main frame and has a passage for processing the light beam between the beam deflector unit and the optical unit. A first heat releasing member is disposed on an outer surface of the sub-frame, and converts heat generated in the sub-frame into a far infrared ray and radiates the far infrared ray. [0021] The optical scanning unit may further comprise a second heat releasing member arranged on an inner surface of the main frame to convert the far infrared ray, which is radiated to the inside of the main frame by the first heat releasing member, into heat. A third heat releasing member can be disposed on an outer surface of the main frame to convert heat which is conducted through the main frame into a far infrared ray and radiate the ray to the outside. Continue reading... Full patent description for System using radiation of far infrared ray for heat release Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this System using radiation of far infrared ray for heat release patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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