LED light bulb
First Claim
Patent Images
1. An LED light bulb comprising:
- an LED module which serves as a light source;
a fixing stage on which the LED module and a reflective plate are fixed via fastners;
a housing which holds the fixing stage;
an optical cover attached to the housing so as to cover the LED module;
a socket cap attached to the housing so that the socket cap is on one side of the housing and the optical cover is on an opposite side of the housing; and
a lens which directs part of outgoing light from the LED module to (i) first directions perpendicular to a front emission direction of the outgoing light or (ii) second directions leaning to the cap beyond the first directions.
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Accused Products
Abstract
In an LED light bulb, an LED module and a lens are disposed on a fixing stage provided to a housing. The lens has a concave portion at its top end. The concave portion forms a reflecting surface which reflects part of outgoing light from the LED module to (i) first directions perpendicular to a front emission direction of the outgoing light or (ii) second directions leaning to a cap beyond the first directions. Due to diffusion effect of an optical cover, part of the light reflected by the lens is emitted backward (toward the cap). This realizes an LED light bulb that distributes light over an entire circumference and has high output as well as high light output ratio.
30 Citations
13 Claims
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1. An LED light bulb comprising:
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an LED module which serves as a light source; a fixing stage on which the LED module and a reflective plate are fixed via fastners; a housing which holds the fixing stage; an optical cover attached to the housing so as to cover the LED module; a socket cap attached to the housing so that the socket cap is on one side of the housing and the optical cover is on an opposite side of the housing; and a lens which directs part of outgoing light from the LED module to (i) first directions perpendicular to a front emission direction of the outgoing light or (ii) second directions leaning to the cap beyond the first directions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification