ROTARY COOLING DEVICE, WAVELENGTH CONVERSION DEVICE, LIGHT DIFFUSION DEVICE, LIGHT SOURCE DEVICE AND PROJECTOR

• Main Author: EGAWA AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 05.04.2018
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; BLASTING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CINEMATOGRAPHY; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROGRAPHY; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; HOLOGRAPHY; LIGHTING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; PHOTOGRAPHY; PHYSICS; PRINTED CIRCUITS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide a rotary cooling device, a wavelength conversion device, a light diffusion device, a light source device and a projector capable of increasing the cooling efficiency of a cooling object.SOLUTION: A rotary cooling device 62 includes: a rotary device 63; a base part 65 connected to the cooling object and rotated by the rotary device; and a heat radiation part 67 arranged on the base part and radiating heat transmitted from the cooling object via the base part. The heat radiation part includes a plurality of fins 671 extending from a rotary center side of the base part to the outer peripheral side and a plurality of first grooves 673 formed between the plurality of fins and communication with the outside region of the heat radiation part as viewed along a rotary axis of the base part; and a plurality of second grooves 674 intersecting at least any of the plurality of first grooves and dividing the plurality of fins into a plurality of fin elements.SELECTED DRAWING: Figure 4 【課題】冷却対象の冷却効率を高めることができる回転冷却装置、波長変換装置、光拡散装置、光源装置及びプロジェクターを提供すること。【解決手段】回転冷却装置６２は、回転装置６３と、冷却対象と接続され、回転装置によって回転される基部６５と、基部に配置され、基部を介して冷却対象から伝達された熱を放熱する放熱部６７と、を有し、放熱部は、基部の回転中心側から基部の外周側に延出し、基部の回転方向に沿って配列された複数のフィン６７１と、複数のフィン間に形成され、基部の回転軸に沿って見て放熱部の外側領域と連通する複数の第１溝６７３と、少なくとも複数の第１溝のいずれかと交差し、複数のフィンを複数のフィン要素に分断する複数の第２溝６７４と、を有する。【選択図】図４