LED tube lamp
First Claim
Patent Images
1. An LED tube lamp, comprising:
- a heat sink;
an LED substrate mounted on the heat sink and comprising a plurality of LEDs;
a cover fixed to the heat sink and shielding the plurality of LEDs;
wherein the cover comprises a first cover and a second cover, the first cover is closer to the LED substrate than the second cover, at least one optical lens is arranged on the first cover, each of the at least one optical lens comprises a concave lens, reflective lenses arranged on both sides of the concave lens and scatter layers arranged on lateral surface of the reflective lenses, the concave lens is a plano concave lens comprising a planar surface and a concave surface, the light beams enter the concave lens from the planar face and exit from the concave face, the concave lens are configured for refracting light beams from the LEDs in a forward direction or in an approximate forward direction, the reflective lenses are configured for reflecting light beams from the LEDs in a lateral direction.
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Abstract
A LED tube lamp includes a heat sink, a LED substrate, a pair of connectors, and a cover fixed to the heat sink. The cover includes a first cover and a second cover, at least one optical lens is arranged on the first cover, the at least one optical lens comprises a concave lens and reflective lenses arranged on both sides of the concave lens. The concave lens is configured to refract light beams from the LEDs in a forward direction or in an approximate forward direction, the reflective lenses are configured to reflect light beams from the LEDs in a lateral direction. After the light beams are refracted by the optical lens, the light divergence angle of the LED tube lamp is increased.
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Citations
20 Claims
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1. An LED tube lamp, comprising:
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a heat sink; an LED substrate mounted on the heat sink and comprising a plurality of LEDs; a cover fixed to the heat sink and shielding the plurality of LEDs; wherein the cover comprises a first cover and a second cover, the first cover is closer to the LED substrate than the second cover, at least one optical lens is arranged on the first cover, each of the at least one optical lens comprises a concave lens, reflective lenses arranged on both sides of the concave lens and scatter layers arranged on lateral surface of the reflective lenses, the concave lens is a plano concave lens comprising a planar surface and a concave surface, the light beams enter the concave lens from the planar face and exit from the concave face, the concave lens are configured for refracting light beams from the LEDs in a forward direction or in an approximate forward direction, the reflective lenses are configured for reflecting light beams from the LEDs in a lateral direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An LED tube lamp, comprising:
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a heat sink; an LED substrate mounted on the heat sink and comprising a plurality of LEDs; a cover fixed to the heat sink and shielding the plurality of LEDs; wherein the cover comprises a first cover and a second cover, the first cover is closer to the LED substrate than the second cover, at least one optical lens is arranged on the first cover, each of the at least one optical lens comprises a concave lens, reflective lenses arranged on both sides of the concave lens and scatter layers arranged on lateral surface of the reflective lenses, a top inner surface of the reflective lenses is a total reflection face, the light beams from the LEDs enter the reflective lenses from a bottom surface and are reflected by the top inner surface, the concave lens are configured for refracting light beams from the LEDs in a forward direction or in an approximate forward direction, the reflective lenses are configured for reflecting light beams from the LEDs in a lateral direction. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification