LED lamp and lighting device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsSatoshi Shida, Kenji Takahashi, Mitsuko Shuto, Masahiro Miki, Hideo Nagai, Takaari Uemoto
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Abstract
An LED lamp has an envelope that includes a globe and a case, an interior space of the envelope being divided in two by a mount closing an opening of the globe, the lamp containing, in a globe side of the interior space, an LED and, in a case side of the interior space, a circuit unit for causing the LED to emit light. The LED is thermally connected to the mount, and the mount and the case are joined to the globe such that, during light emission, at least as much heat from the LED is propagated from the mount to the globe as from the mount to the case.
Claims14
A lamp having an envelope that includes a globe and a case, an interior space of the envelope being divided in two by a mount closing an opening of the globe, the lamp containing, in a globe side of the interior space, a semiconductor light-emitting element and, in a case side of the interior space, a circuit unit for causing the semiconductor light-emitting element to emit light, wherein
- the mount is a circular disc having a side face that is at least partially joined to the globe by a first adhesive,
- an opening end of the globe is connected to the case by a second adhesive,
- the semiconductor light-emitting element is thermally connected to the mount and spatially separated from the envelope,
- the mount and an inner circumferential surface of the globe share a first surface contact region, and
- the mount and the case share a second surface contact region,
- wherein at the first surface contact region a part of the mount and the inner circumferential surface of the globe are joined by the first adhesive, and
- at the second surface contact region a part of the mount, the case and an outer circumferential surface of the globe are joined by the second adhesive.
Dependencies are inferred from the claim text.