Lateral LED (Light-emitting Diode) backlight with integrated heat tube and manufacturing method

• Main Authors: LI ZONGTAO, GUAN WOHUAN, ZHU BENMING, LI HUAZHOU, TANG YONG, DING XINRUI
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2012
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

The invention discloses a lateral LED (Light-emitting Diode) backlight with an integrated heat tube and a manufacturing method. The lateral LED backlight comprises an LED array light bar, an LED backlight substrate and the heat tube, wherein a bulged and stripped cavity is arranged on the LED backlight substrate; an opening is arranged on one side along an axial direction of the cavity; the heat tube is inserted into the cavity through one end of the cavity; the LED array light bar is arranged on an outer surface of one side of the cavity; and the S-shaped flat heat tube is distributed on a back face of the LED backlight substrate. The heat tube is integrated with the substrate through a tube plate pressing-expanding and jointing technique and a low temperature brazing technique, so that contact thermal resistance between a heat source and a heat transfer element can be reduced, larger radiating area is achieved, the temperature of a backlight can be effectively reduced, the uniform temperature performance of