PROJECTION-TYPE VIDEO DISPLAY DEVICE

• Main Authors: MINAMI KAZUYA, MIYAMOTO MASAAKI
• Format: Patent
• Language: English
• Published: 19.02.2009
• 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; CINEMATOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTROGRAPHY; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; HOLOGRAPHY; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHOTOGRAPHY; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

PROBLEM TO BE SOLVED: To provide a projection-type video display device which cools the upper side of a lamp whose temperature rise is sharp, regardless of the fact that any of the surfaces of the projection-type video display device is a top surface due to an installation status. SOLUTION: The projection-type video display device is equipped with the lamp 11 emitting light and a reflector 12 covering the lamp 11, projects the light to display a video and blows cooling air to air-cool the lamp 11. The projection-type video display device is equipped with a wind direction adjusting member 92 which is provided in obliquely front side of the lamp 11 and adjusts the direction of the cooling air blown in the lamp 11 and in which a plurality of wind direction plates 92a, 92b and 92c for blowing the cooling air in all the periphery of the lamp 11 are formed. COPYRIGHT: (C)2009,JPO&INPIT