Spot light source and bulb-type light source

A point light source and halogen bulb technology, applied in the field of point light source and bulb-shaped light source, can solve the problem that LED lighting devices are not suitable for halogen bulbs, and achieve the effect of improving heat dissipation efficiency and high thermal conductivity
CN102449378AInactive Publication Date: 2012-05-09PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2012-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed is a spot light source (1) comprising a case (11), a heat radiator (12) and a light-emitting unit (18). In the spot light source (1), the heat radiator (12) is formed in a bowl-like shape by a bottom part (12a) and a side part (12b) that extends from the outer edge of the bottom part (12a), and the side part (12b) is composed of a light-permeable ceramic material. Outgoing light from an LED element (18b) that is provided in the light-emitting unit (18) is guided toward the side part (12b) by means of a lens (18d) to generate leak light to the side of the spot light source (1), whereby high decorative performance can be created.
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Description

technical field

[0001] The present invention relates to a point light source and a light bulb-shaped light source having a light emitting element such as an LED (Light Emitting Diode: Light Emitting Diode). Background technique

[0002] Halogen bulbs with reflectors are widely used as point light sources such as spotlights in commercial facilities and residences.

[0003] In addition, power saving and long life are also emphasized in the field of lighting, and a technology for replacing existing light bulbs with lighting devices having LEDs (hereinafter referred to as LED lighting devices) has been researched and developed. The halogen light bulb with a reflector is no exception, and many LED lighting devices with a reflector have been proposed (for example, refer patent document 1, 2).

[0004] Generally, LEDs have the characteristic that heat is generated during the lighting process, and the higher the temperature due to the heat, the lower the luminous efficiency. There...

Claims

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