Lighting apparatus
First Claim
1. A lighting apparatus, comprising:
- a housing having a first back cover including a recess at lower portion and a reflective surface of a parabolic shape;
a first light emitting module disposed on a first corner of the recess of the back cover and having a plurality of light emitting diodes (LEDs) arranged in a first direction;
a heat dissipation body in which the first light emitting module is disposed, the heat dissipation body having a heat dissipation portion; and
a light-transmissive sheet disposed in an oblique direction at a recess of the housing and transmitting light emitted from the LEDs,wherein the reflective surface includes a first reflection region adjacent to the LEDs and a second reflection region disposed between an upper portion of the light-transmissive sheet and the first reflection region,wherein the first reflection region reflects light incident from the LEDs to a different region of the second reflection region,wherein the second reflection region reflects irregular light incident from the first reflection region to a center region of the light-transmissive sheet,wherein the light-transmissive sheet has a first end and a second end, and includes a lower region which is disposed at a lower position than a horizontal straight line with respect to the plurality of LEDs and the upper region which is disposed at a higher position than the horizontal straight line, wherein the first end of the light-transmissive sheet is in the lower region, and the second end of the light-transmissive sheet is in the upper region; and
wherein the heat dissipation body includes a third reflection region disposed between the LEDs and a lower end portion of the light-transmissive sheet, a first end of the third reflection region is to couple to the first end of the light-transmissive sheet, and a second end of the third reflection region is to couple to the heat dissipation portion,wherein the third reflection region has a concave curved surface between the first end and the second end, and the third reflection region reflects specularly the incident light to the light-transmissive sheet and the second reflection region.
2 Assignments
0 Petitions
Accused Products
Abstract
The lighting apparatus according to an embodiment includes: a housing including first and second back covers each having an inside surface in a parabola shape; a recess opened at a lower portion of the first and second back covers; a light-transmissive sheet arranged obliquely in a recess of the first and second back covers; a light emitting module between the recesses of the first and second back covers; a heat dissipation body in which the light emitting module is disposed; and a first reflective sheet for reflecting light on an inside surface of the first and second back covers, wherein the heat dissipation body includes a heat dissipation portion in which the first and second light emitting modules are disposed and a reflecting portion disposed between the heat dissipation portion and a lower end portion of the light-transmissive sheet, and the first reflective sheet has a plurality of reflective surfaces.
18 Citations
18 Claims
-
1. A lighting apparatus, comprising:
-
a housing having a first back cover including a recess at lower portion and a reflective surface of a parabolic shape; a first light emitting module disposed on a first corner of the recess of the back cover and having a plurality of light emitting diodes (LEDs) arranged in a first direction; a heat dissipation body in which the first light emitting module is disposed, the heat dissipation body having a heat dissipation portion; and a light-transmissive sheet disposed in an oblique direction at a recess of the housing and transmitting light emitted from the LEDs, wherein the reflective surface includes a first reflection region adjacent to the LEDs and a second reflection region disposed between an upper portion of the light-transmissive sheet and the first reflection region, wherein the first reflection region reflects light incident from the LEDs to a different region of the second reflection region, wherein the second reflection region reflects irregular light incident from the first reflection region to a center region of the light-transmissive sheet, wherein the light-transmissive sheet has a first end and a second end, and includes a lower region which is disposed at a lower position than a horizontal straight line with respect to the plurality of LEDs and the upper region which is disposed at a higher position than the horizontal straight line, wherein the first end of the light-transmissive sheet is in the lower region, and the second end of the light-transmissive sheet is in the upper region; and wherein the heat dissipation body includes a third reflection region disposed between the LEDs and a lower end portion of the light-transmissive sheet, a first end of the third reflection region is to couple to the first end of the light-transmissive sheet, and a second end of the third reflection region is to couple to the heat dissipation portion, wherein the third reflection region has a concave curved surface between the first end and the second end, and the third reflection region reflects specularly the incident light to the light-transmissive sheet and the second reflection region. - View Dependent Claims (2, 3)
-
-
4. A lighting apparatus, comprising:
-
a housing including first and second back covers disposed on opposite sides of a center and each having an inside surface in a parabola shape; an recess opened at lower portions of the first and second back covers; a first light-transmissive sheet disposed in an oblique direction in a recess of the first back cover; a second light-transmissive sheet disposed in an oblique direction in a recess of the second back cover; a first light emitting module having a plurality of LEDs arranged in a first direction at a first corner of the recess of the first back cover; a second light emitting module having a plurality of LEDs arranged in the first direction at a second corner of the recess of the second back cover; a heat dissipation body in which the first and second light emitting modules are disposed in a region between the recess of the first back cover and the recess of the second back cover; and a first reflective sheet disposed adjacent to the LEDs in the inside surfaces of the first and second back covers, and reflecting first side light emitted from the plurality of LEDs, wherein the heat dissipation body includes a first heat dissipation portion in which the first light emitting module is disposed, a second heat dissipation portion in which the second light emitting module is disposed, a first reflecting portion disposed between the first heat dissipation portion and a lower end of the first light-transmissive sheet, and a second reflecting portion disposed between the second heat dissipation portion and a lower end of the second light-transmissive sheet, wherein the first reflective sheet has a plurality of reflective surfaces, wherein the first light-transmissive sheet includes a lower region which is disposed at a lower position than a first horizontal straight line with respect to the LEDs of the first light emitting module and an upper region which is disposed at a higher position than the first horizontal straight line, wherein a first end of the first light-transmissive sheet is in the lower region, and a second end of the first light-transmissive sheet is in the upper region, and wherein the second light-transmissive sheet includes a lower region which is disposed at a lower position than a second horizontal straight line with respect to the LEDs of the second light emitting module and an upper region which is disposed at a higher position than the second horizontal straight line, wherein a first end of the second light-transmissive sheet is in the lower region, and a second end of the second light-transmissive sheet is in the upper region, and wherein a first end of the first reflecting portion is to couple to the first end of the first light-transmissive sheet and a second end of the first reflecting portion is to couple to the first heat dissipation portion, wherein the first reflecting portion has a concave curved surface between the first end and the second end; and wherein a first end of the second reflecting portion is to couple to the first end of the second light-transmissive sheet and a second end of the second reflecting portion is to couple to the second heat dissipation portion, wherein the second reflecting portion has a concave curved surface between the first end and the second end. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification