Abstract:
PROBLEM TO BE SOLVED: To provide a technology for making the heat generated by a discharge lamp difficult to reach a circuit component, relating to a discharge lamp unit that supports the discharge lamp. SOLUTION: A discharge lamp unit 1 includes a discharge lamp support 21 for supporting a discharge lamp 11, and circuit components (starter transformer 63, noise reducing coil 64, or the like) for supplying power to the discharge lamp 11 supported by the discharge lamp support 21. A wiring 25 for electrically connecting them includes a heatsink 26 whose surface area per unit length is set larger than the other portion of the wiring 25. Thus, the thermal energy held by the heatsink 26 can be easily moved to a material contacting the heatsink 26. As a result, the calorific value released through the wiring 25 can be increased, thereby reducing a calorific value transferred to the circuit component. Consequently, the heat generated by the discharge lamp 11 hardly reaches the circuit component. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a light source assembly doing without the need of supplying high voltage by a ballast. SOLUTION: A PAR38 light source assembly is for use with a fixture having a PAR38 socket connected to a ballast circuit for generating a ballast voltage. An electrically insulating housing supports a PAR38 screw base and encloses a CMH lamp and a circuit board. The circuit board provides a high voltage to ignite or reignite the CMH lamp. The housing supports a reflector and a lens. The lens, the reflector and the housing form an electrically insulating enclosure so that the PAR38 screw base is to be the only electrically conductive portion. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an induction coupled type lamp assembly with efficiency, reliability improved under various conditions, and can be easily adapted with various lamp shapes. SOLUTION: The lamp assembly accepting power by induction from a primary coil includes a lamp circuit 12 provided with a secondary coil 14 and a lamp connected in series. The lamp circuit includes a capacitor connected in series with the lamp and the secondary coil to make synchronize and resonate. The capacitor is selected to have a reactance substantially equal to or slightly less than the reactance of the secondary coil and an impedance of the lamp. Moreover, the lamp assembly includes a sealed transparent sleeve 70 sealing the lamp circuit as a whole such that the transparent sleeve is fully sealed and unpenetrated. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
A lamp includes first and second glass tube portions for emitting light, respective one ends of the first and second glass tube portions being bent and connected integrally to each other, first and second electrodes respectively formed at respective other ends of the first and second glass tube portions, and a third electrode formed at the bent portion of the first and second glass tube portions.
Abstract:
PROBLEM TO BE SOLVED: To provide an electrode-less discharge lamp which can be generated efficiently at low cost. SOLUTION: During the lamp is turned on, a cavity 16 is exposed to a wall heat load higher than the exterior wall of the lamp globe 12. In order to resist the higher well heat load, a triphosphate phosphor 30 is used instead of a halo-phosphate phosphor 32 used for the exterior wall of the lamp globe. To perform two types of phosphor coating for a single lamp globe at a reasonable cost, the cavity and the exterior wall are separately coated and then these two elements are joined to make a finished product of the lamp globe. The joint of the cavity and the exterior globe is located under the upper rim of a housing so that it does not appear in sight in the finished lamp. COPYRIGHT: (C)2006,JPO&NCIPI