LIGHT-EMITTING DEVICE AND VEHICLE HEAD LAMP

• Main Authors: AZUMA YUJI, KUBOYAMA OSAMU, SHIRAISHI AKINORI, MIZUNO MASANORI
• Format: Patent
• Language: English
• Published: 02.07.2009
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; 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; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO USESOR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; SEMICONDUCTOR DEVICES; 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 light-emitting device having a sufficient cooling effect using an LED as a light-emitting element, and to provide a vehicle head lamp. SOLUTION: In a light-emitting device 100 having the light-emitting element 10 and a mounting substrate 110 to which the light-emitting element 10 is electrically connected and thermally via an interposer 210, a first space 120 includes in the mounting substrate 110 and a refrigerant 314 to cool the light-emitting element 10 is caused to flow through the inside of the first space 120. The refrigerant 314 for which heat exchange is effected in the first space 120 is subjected to heat exchange at a heat sink 310 provided outside the mounting substrate 110 for heat dissipation. COPYRIGHT: (C)2009,JPO&INPIT