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Patent Searching and Data


Title:
ELECTRIC DEVICE AND LUMINAIRE
Document Type and Number:
Japanese Patent JP2015065041
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electric device that uses no protection element and stops operating at the end of the lifetime of a surface-mounted component generating heat during the operation, and a luminaire including the electric device.SOLUTION: An electric device 1 includes: a metal base substrate 2 which has an insulation layer 7 formed on one surface 2a; a surface-mounted component 3 which is provided on the insulation layer 7 and generates heat during the operation; a conductor 4 which is formed on a top surface 7a of the insulation layer 7, and has a plurality of lands 8a-8c where the surface-mounted component 3 is mounted and a conduction pattern 9 provided so as to be connected to the lands 8a, 8b and pass nearby the land 8c close to a heat generation part 10 of the surface-mounted component 3; a solder resist 5 which is applied onto the insulation layer 7 in the periphery of the surface-mounted component 3 so as to bury the conductor 4; and cutoff means 6 which is provided in the vicinity of the land 8c close to the heat generation part 10 of the surface-mounted component 3, of the conduction patter 9, and electrically disconnects the conduction patter 9 when the solder resist 5 in the periphery of the surface-mounted component 3 cracks.

Inventors:
ASAMI KENICHI
SHIMOJO HIDEAKI
SAKAGUCHI SADAO
Application Number:
JP2013198403A
Publication Date:
April 09, 2015
Filing Date:
September 25, 2013
Export Citation:
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Assignee:
TOSHIBA LIGHTING & TECHNOLOGY
International Classes:
F21V25/04; F21V19/00; H01L33/62; H05K1/02
Attorney, Agent or Firm:
Kumagai Masatoshi