TW201700916A - LED lamp - Google Patents

Abstract

A LED Lamp including a base, a heat dissipation piece and at least a LED is provided in the present disclosure. A cave having an opening is formed on the base, and an inner wall of the cave is a curved surface. A lower edge is formed on the heat dissipation piece, the lower edge is arranged cross the opening, and the heat dissipation piece is extended from the lower edge and toward outside of the opening. The LED is arranged on the lower edge. Heats generated by the LED is dissipated into environment atmosphere via the heat dissipation piece.

Description

Light-emitting diode lamp 【0001】

The invention relates to a light-emitting diode lamp, in particular to a reflective light-emitting diode lamp.

【0002】

With the advancement of manufacturing technology of light-emitting diodes, light-emitting diodes have been widely used in various types of lighting applications. A general light-emitting diode lamp has a metal heat sink, and a light-emitting diode is disposed thereon to dissipate heat generated by the metal heat sink. The light-emitting diode cover is provided with a lens and is adjusted by lens refraction. The range of light projection.

[0003]

However, in another reflective luminaire, such as a car headlight, which generally has a curved reflector, and the illuminating source is disposed at the center of curvature of the reflector, the light emitted by the illuminating source can be reflected and reflected by the reflector. Since the light source is located within the projection range of the light in this structure, if the metal heat sink is disposed to block the light projection, the high power light emitting diode cannot be used as the light source.

[0004]

In view of the above, the inventors of the present invention have made great efforts to solve the above problems in view of the above-mentioned prior art, and have made great efforts to solve the above problems, which has become the object of improvement of the present inventors.

[0005]

The invention provides a reflective light-emitting diode lamp.

[0006]

The invention provides a light-emitting diode lamp, comprising a body, a heat sink and at least one light-emitting diode. The seat body has a recess, the recess has an opening and the inner wall of the recess is curved. The heat sink has a bottom edge, the bottom edge spanning the opening and the heat sink extending from the bottom edge to the outside of the opening. The light emitting diode is disposed at the bottom edge of the heat sink.

【0007】

Preferably, the inner wall of the recess may form a paraboloid or a portion of a spherical surface. The light emitting diode is located in the axial direction of the opening. A circuit is disposed on the bottom edge and the light emitting diode is electrically connected to the circuit. The inner wall of the recess is covered with a reflective layer. The heat sink has a pair of side edges connecting the two ends of the bottom edge, and each of the side edges is connected to the base body by a bracket. The outer edge of the opening forms a slope and the forward direction of the slope faces away from the opening. The heat sink is tapered to extend. A plurality of heat dissipation structures are formed on the heat sink.

[0008]

When the LED device of the present invention is used, the thermal energy generated by the LED can be dissipated into the environment through the heat sink.

[0022]

100‧‧‧ body

[0023]

101‧‧‧ recess

[0024]

102‧‧‧ openings

[0025]

103‧‧‧ slope

[0026]

110‧‧‧reflective layer

[0027]

200‧‧‧ Heatsink

[0028]

201‧‧‧ bottom edge

[0029]

202‧‧‧ side edge

[0030]

210‧‧‧ Circuitry

[0031]

220‧‧‧ bracket

[0032]

230‧‧‧heating structure

[0033]

300‧‧‧Lighting diode

[0034]

D1‧‧‧ (open) axial direction

[0035]

D2‧‧‧ (slope) forward

【0009】

1 is a perspective view of a light-emitting diode lamp according to a first embodiment of the present invention.

[0010]

Figure 2 is a longitudinal cross-sectional view of a light-emitting diode lamp according to a first embodiment of the present invention.

[0011]

3 is a schematic view of a light-emitting diode lamp according to a second embodiment of the present invention.

[0012]

4 is a schematic view of a light-emitting diode lamp according to a third embodiment of the present invention.

[0013]

Referring to FIG. 1 and FIG. 2, a first embodiment of the present invention provides a light-emitting diode lamp including a body 100, a heat sink 200, and at least one light-emitting diode 300.

[0014]

In this embodiment, the base 100 is preferably made of metal, but it is not limited thereto, and for example, it may be made of plastic. A recess 101 is formed on a surface of the base 100. The recess 101 defines an opening 102 on the surface thereof, and the inner wall of the recess 101 has a curved surface, and the curved surface may be a paraboloid or a partial spherical surface. This is limited. In the present embodiment, the inner wall of the recess 101 forms a paraboloid, and the inner wall of the recess 101 is covered with a light reflecting layer 110 to improve the smoothness thereof. The outer edge of the opening 202 forms a slope 103 and the forward direction D2 of the slope 103 faces away from the opening 202.

[0015]

In this embodiment, the heat sink 200 is preferably a rectangular metal plate body. The heat sink 200 has a bottom edge 201 and a pair of side edges 202 connecting the two ends of the bottom edge 201. Each side edge 202 is respectively supported by a bracket 220. The bracket body 220 is preferably connected to the opposite sides of the outer edge of the opening 102 such that the bottom edge 201 spans over the opening 202. The heat sink 200 preferably extends from the bottom edge 201 parallel to the axial direction D1 of the opening 202. And extending beyond the opening 202, and the heat sink 200 is tapered to extend. In this embodiment, the bracket 220 preferably extends from the side edges 202 of the heat sink 200, and the bracket 220 is inserted into the base 100. However, the present invention is not limited thereto, for example, the bracket 220 may be configured to dissipate heat. The sheets 200 are combined with each other. A circuit 210 is disposed on the bottom edge 201 of the heat sink 200.

[0016]

The light emitting diodes 300 may be a single or a plurality of arrays, and the light emitting diodes 300 are attached to the heat sink 200 and electrically connected to the circuit 210. The light-emitting diode 300 preferably has the light-emitting diode 300 disposed in the axial direction D1 of the opening 102 and at the center of curvature of the recess 101. When the light-emitting diode 300 emits light, the paraboloid formed by the inner wall of the cavity 101 can reflect and condense the light and exit through the opening 102. In the present embodiment, the center of curvature of the pocket 101 is located outside the pocket 101, and thus the light-emitting diode 300 is located outside the pocket 101, but the invention is not limited thereto.

[0017]

When the light-emitting diode lamp of the present invention is used, the light-emitting diode 300 can be powered by the circuit 210 on the heat sink 200 to cause the light-emitting diode 300 to emit light. The thermal energy generated by the light emitting diode 300 can be dissipated into the environment through the heat sink 200. Therefore, the light-emitting diode lamp of the present invention has better heat dissipation efficiency and can be applied to high-power use requirements.

[0018]

Moreover, since the heat sink 200 is disposed within the projection range of the light, it causes shadows, and the tapered extension of the heat sink 200 can reduce the degree of blocking light to reduce the shadow. The slope 103 of the outer edge of the opening 202 is used to evade light, especially when the light-emitting diode 300 is located outside the cavity 101, thereby preventing light from being unintended reflection outside the cavity 101 and affecting light diffusion.

[0019]

Referring to FIG. 3, a second embodiment of the present invention provides a light-emitting diode lamp including a body 100, a heat sink 200, and at least one light-emitting diode 300. The configuration is substantially the same as the first embodiment, and the same portions will not be described again. This embodiment is different from the first embodiment in that the heat sink 200 is provided with a heat dissipation structure 230 (for example, a fin). The heat generated by the LEDs 300 can be transmitted to the heat dissipation structure 230 through the heat sink 200 and radiated to the environment via the heat sink 200 and the heat dissipation structure 230 thereon, thereby increasing the heat dissipation efficiency of the heat sink 200.

[0020]

Referring to FIG. 4, a third embodiment of the present invention provides a light-emitting diode lamp including a body 100, a heat sink 200, and at least one light-emitting diode 300. The configuration is substantially the same as the first embodiment, and the same portions will not be described again. This embodiment is different from the first embodiment in that the circuit 210 is configured in the form of a flying line.

[0021]

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and other equivalent variations of the patent spirit of the present invention are all within the scope of the invention.

100‧‧‧ body

101‧‧‧ recess

102‧‧‧ openings

103‧‧‧ slope

110‧‧‧reflective layer

200‧‧‧ Heatsink

201‧‧‧ bottom edge

202‧‧‧ side edge

220‧‧‧ bracket

300‧‧‧Lighting diode

Claims (10)

[Item 1] A light-emitting diode lamp comprising:
a body having a recess, the recess having an opening and an inner wall of the recess being curved;
a heat sink having a bottom edge spanning the opening and extending from the bottom edge to the opening; and at least one light emitting diode disposed on the bottom edge. [Item 2] The illuminating diode lamp of claim 1, wherein the inner wall of the recess forms a paraboloid. [Item 3] The illuminating diode lamp of claim 1, wherein the inner wall of the recess forms a part of a spherical surface. [Item 4] The illuminating diode lamp of claim 1, wherein the illuminating diode is located in an axial direction of the opening. [Item 5] The illuminating diode lamp of claim 1, wherein the bottom edge is provided with a circuit and the illuminating diode is electrically connected to the circuit. [Item 6] The illuminating diode lamp of claim 1, wherein the inner wall of the recess is covered with a light reflecting layer. [Item 7] The illuminating diode lamp of claim 1, wherein the heat sink has a pair of side edges connecting the two ends of the bottom edge, and each of the side edges is connected to the base by a bracket. [Item 8] The illuminating diode lamp of claim 1, wherein an outer edge of the opening forms a slope and a positive direction of the slope faces away from the opening. [Item 9] The illuminating diode lamp of claim 1, wherein the fin extends gradually. [Item 10] The illuminating diode lamp of claim 1, wherein a plurality of heat dissipating structures are formed on the heat sink.