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AssigneeToshiba Lighting & Technology Corporation
InventorsSatoshi Watanabe, Keiichi Shimizu, Takeshi Osada, Keiichi Shimizu, Toshiya Tanaka, Shigeru Osawa, Takeshi Hisayasu, Hirokazu Otake, Hitoshi Kawano, Makoto Sakai
Estimating the term…
A lighting fixture capable of efficiently radiating heat of a lamp device may be configured to be attached to a socket device. In some examples, by attaching the lamp device to the socket device, a cap portion of the lamp device is brought into contact with a fixture body, and pressed against and brought into close contact with the fixture body by an elastic body. Heat generated by lighting of LEDs of the lamp device is conducted from the cap portion to the fixture body and efficiently radiated.
A socket device comprising:
A socket device comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Characterised by the use of a forced flow of gas, e.g. air: characterised by the arrangement of fans
Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers: light sources comprising…
Fastening of light sources or lamp holders: the light sources being semiconductors devices, e.g. LEDs
Characterised by passive heat-dissipating elements, e.g. heat-sinks: the elements being adjustable with respect to each other, e.g. hinged
About 4 years 7 months of term left · ends 31 May 2031 (estimated)
Aspects relate to a lighting fixture using a flat lamp device having a cap portion at its one face side and a light source at the other face side.
Conventionally, a lamp device has been used which uses a GX53-type cap portion standardized by the IEC (International Electrotechnical Commission). The lamp device has a flat lamp device body, the GX53-type cap portion is provided on an upper face side of the lamp device body, a flat light source using a fluorescent lamp, LED or the like is arranged on a lower face side of the lamp device body, and a lighting circuit for lighting the light source is housed inside the lamp device body. On the cap portion, a pair of lamp pins each having a large diameter portion at its top end is projected. The lamp pins of the lamp device are inserted and hooked into a socket device by turning the lamp device, the lamp device is held by the socket device, and power is supplied from the socket device to the lamp pins.
FIG. 1 is a cross sectional view of a lighting fixture, in which a lamp device is attached to a socket device, according to a first embodiment of the present invention.
FIG. 2 is a cross sectional view of the lighting fixture in which the lamp device is detached from the socket device.
FIG. 3 is a perspective view of the socket device and the lamp device which are detached from each other.
When a lamp device is lit, a light source generates heat and heat radiation is necessary. If the heat is also radiated from a cap portion of the lamp device, effective heat radiation performance is obtained.
However, in a state that the cap portion of the lamp device is attached to a socket device, the area of the cap portion exposed to the outside becomes small and heat radiation performance is lowered in terms of the attachment structure. Although it is considered that heat is conducted from the cap portion to the socket device side, because a gap is generated between the cap portion and the socket device, and the cap portion and the socket device are not brought into close contact with each other, heat is not efficiently conducted from the cap portion to the socket device side and sufficient heat radiation performance is not obtained.
A lighting fixture according to some aspects may include a socket device which holds a cap portion provided at one face side of a flat lamp device and supplies power for lighting a light source arranged at the other face side of the lamp device to the cap portion; a heat radiating body which comes into contact with at least a part of the cap portion of the lamp device held by the socket device; and a pressing body for pressing the cap portion of the lamp device held by the socket device and the heat radiating body in a contact direction.