Lighting device or headlamp for vehicle

• Main Authors: Richard, Stéphane, Ho, Pascal, Nicolai, Jean-Marc
• Format: Patent
• Language: English; French; German
• Published: 31.07.2019
• Subjects: BLASTING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES 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; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS; LIGHTING; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MECHANICAL ENGINEERING; NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; PRINTED CIRCUITS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; WEAPONS

The module (1) has electrical terminals (13a, 13b) i.e. electrodes, connected to a light emitting unit (11) of a light device (10) e.g. LED. A conducting plate (15) i.e. flame resistant 4 (FR4) printed circuit board, has a cavity (15a) for receiving the device. A heat dissipating support (17) with an anisotropic thermal graphite layer, dissipates heat of the device. An adhesive part (18) i.e. double-sided adhesive, is placed between the support and the plate, and is in the form of sheet. The terminals are connected to the plate by point-to-point electrical wire bondings (16a, 16b). The adhesive part has a film made of polyethylene naphtalate and polyethylene terephthalate, and an acrylic base that is provided with ceramic loads. A gum layer e.g. epoxy glue and polyester mastic, is arranged in the cavity around the device.