CN103912804A - Large angle light emitting diode (LED) lamp - Google Patents

Abstract

A large angle light emitting diode (LED) lamp comprises a lamp head body, a lamp bulb housing and a plurality of light source plates, wherein the light source plates are vertically arranged in the middle of the top of the lamp head body, the lamp bulb housing covers the top of the lamp head body, each light source plate comprises a base plate and an LED light source, one side of each base plate is a light emitting surface, the other side of each base plate is a light reflecting surface, the LED light sources are arranged on the light emitting surfaces of the corresponding base plates, the side edge of at least one light source plate is adjacent to the side edge of another light source plate, and an included angle less than 180 degrees is formed between the light reflecting surface of one light source plate and the light emitting surface of another light source plate, which are arranged in relative inclined mode, so as to reflect light sent out from the light emitting surface of the another light source plate towards the exterior of the lamp bulb housing. The large angle LED lamp has the advantages of being simple in structure and convenient to assemble.

Description

Large angle LED lights

technical field

The invention relates to the field of LED lighting, in particular to a large-angle light-emitting LED lamp.

Background technique

In recent years, the application of LED chips as light sources in the field of indoor lighting has developed rapidly. However, due to the limitations of the LED packaging structure, the existing LED light sources can only achieve a light-emitting angle of no greater than 180° and cannot emit light in all directions like incandescent lamps. In order to make LED lamps replace incandescent lamps, it is necessary to overcome the problem of small light emitting angles of LEDs. The current technology is to set the LED light source on a bracket with a three-dimensional surface, and install the bracket on the top of the lamp head, so that the LED light source is vertically arranged relative to the top surface of the lamp head, so that the light emitted by the LED light source is emitted toward the direction around the entire lamp. . For example, the date of authorization announcement is October 31, 2012, and the Chinese utility model patent with the patent number 201220060615.X discloses a high-efficiency and large-angle LED bulb. The high-efficiency large-angle LED light bulb includes a base shell, a lamp cap located at the bottom of the base shell, a constant current power supply installed inside the base shell, a cover plate covering the top of the base shell, and a cover plate fixed on the base shell. A cube-shaped heat dissipation column above the cover plate, a light-transmitting cover that accommodates the heat dissipation column and is connected to the base shell, wherein the bottom surface of the heat dissipation column is installed on the cover plate, and the remaining surfaces are uniform A PCB board is pasted, and several LED chips are distributed and welded on each PCB board. Since the large-angle LED lamp needs to weld the LED chip on the heat dissipation column, in order to increase the brightness of the side of the LED lamp, it is necessary to weld multiple LED chips on each side of the bracket, which makes the structure of the LED lamp more complicated, and A bracket and multiple LED chips need to be set up to achieve omnidirectional and large-angle lighting.

Contents of the invention

In view of this, it is necessary to provide an LED lamp with simple structure and convenient assembly.

The technical solution adopted by the present invention to solve the technical problem is: a large-angle light-emitting LED lamp, including a lamp head body, a bulb shell and a plurality of light source boards, the light source boards are vertically arranged in the middle of the top of the lamp head body, and the light bulb The shell cover is arranged on the top of the lamp head body. Each light source board includes a substrate and an LED light source. One side of the substrate is a light-emitting surface, and the other side of the substrate is a reflective surface. The LED light source is arranged on the light-emitting surface of the substrate. On the surface, the side of at least one light source board is adjacent to the side of another light source board, and the reflective surface of one light source board and the light-emitting surface of the other light source board are set at an angle less than 180°, so that the The light emitted by the light-emitting surface is reflected toward the outside of the bulb shell.

Compared with the prior art, the large-angle light-emitting LED lamp is provided with multiple light source boards, each light source board includes a substrate and an LED light source, the substrate includes a light-emitting surface and a reflective surface, and the LED light source is arranged on the light-emitting surface of the substrate. One side of at least two light source boards is adjacent to each other and the two light source boards form an angle less than 180°, so that the light emitted from the light emitting surface of the light source board is directed to the outside of the bulb shell through the reflective surface of the other light source board. direction reflection. Since the reflective surface on the light source board can reflect the light emitted by the light emitting surface of another light source board outward, the light output efficiency and the light emitting angle of the large-angle light-emitting LED lamp are improved, and it is no longer necessary to install light on each surface of the three-dimensional bracket. Both are provided with LED light sources, so that the large-angle light-emitting LED lamp of the present invention has the advantages of simpler structure and more convenient assembly.

Description of drawings

Fig. 1 is a perspective view of a large-angle LED lamp according to the first embodiment of the present invention.

Fig. 2 is a three-dimensional exploded view of the large-angle emitting LED lamp shown in Fig. 1 .

Fig. 3 is a cross-sectional view of the large-angle LED lamp shown in Fig. 1 along A-A shown in Fig. 1 .

Fig. 4 is a three-dimensional exploded view of a large-angle light-emitting LED lamp according to a second embodiment of the present invention.

Explanation of reference signs:

100 Large Angle LED Light 100a Large Angle LED Light

10 Lamp body 20a Light source board

20 Light source board 22a Substrate

22 Substrate 222a Luminous surface

222 luminous surface 224a reflective surface

224 Reflective surface 2242a Light guide section

24 LED Light Source 12 Top

30 bulb shells

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a perspective view of a large-angle light-emitting LED lamp 100 according to the first embodiment of the present invention. The large-angle light-emitting LED lamp 100 includes a lamp head body 10, three light source boards 20 and a bulb housing 30 (as shown in Fig. 2 ). The three light source boards 20 are vertically arranged in the middle of the top of the lamp body 10 . The bulb shell 30 is covered on the top of the lamp body 10, and the bottom end of the bulb shell 30 is fixed on the top of the lamp body 10, and the three light source boards 20 are accommodated inside (as shown in Figure 1 and Figure 3 ).

Please refer to FIG. 1 , the bulb housing 30 is a transparent structure made of plastic or glass. Of course, according to consumers' preferences, the light bulb housing 30 can also adopt an opaque structure. The lamp base body 10 includes a conventional lamp base connected to a commercial power supply and a heat dissipation member arranged on the lamp base. The top 12 of the lamp body 10 is substantially planar.

Please refer to FIG. 2 , the three light source boards 20 are all rectangular straight board structures, and the structures of these light source boards 20 are the same. Each light source board 20 includes a substrate 22 and a plurality of LED light sources 24 . The substrate 22 includes a light emitting surface 222 and a light reflecting surface 224 . The light-emitting surface 222 is disposed on one side of the substrate 22 , and the reflective surface 224 is disposed on the other side of the substrate 22 parallel to the light-emitting surface 222 . The light-emitting surface 222 and the reflective surface 224 are vertically disposed on the top 12 of the lamp body 10 . These LED light sources 24 are arranged on the light-emitting surface 222 of the substrate 22 , and these LED light sources 24 are packaged together by a phosphor layer (not shown in the figure) to form a surface-emitting light source. The light-emitting surfaces 222 and reflective surfaces 224 between the three light source panels 20 are connected at an angle of less than 180°, so that the light-emitting surface 222 of the other light source panel 20 can be illuminated by the reflective surface 224 on one light source panel 20. The light is reflected toward the outside of the bulb housing 30. Preferably, one side of the three light source boards 20 is located close to the middle of the top 12 of the lamp body 10 , so that one side wall of each light source board 20 is adjacent to one side of other light source boards 20 . The reflective surface 224 of each light source board 20 is arranged at an angle smaller than 180° relative to the light emitting surface 222 of another light source board 20 in turn, so that the three light source boards 20 are arranged at an angle of 120° in pairs.

Please refer to Fig. 2, when working, the light emitted by the LED light source 24 on the light-emitting surface 222 on one light source board 20 will be reflected to the outside of the bulb shell 30 by the reflective surface 224 of another light source board 20 adjacent to it, because this The three light source boards 20 are arranged in pairs at equal angles, so that the three light source boards 20 can emit light outward at 360° around the central axis (not shown) of the lamp head body 10, so that the large-angle light-emitting LED lamp 100 can reach Large-angle lighting effect over 270°.

Of course, it can be understood that as long as the side of one light source board 20 is adjacent to the side of the other light source board 20, the reflective surface 224 of one light source board 20 is opposite to the light emitting surface 222 of the other light source board 20 The included angle of 180° is used to reflect the light emitted by the light-emitting surface 222 toward the outside of the bulb shell 30 , so as to increase the light-emitting angle of the LED lamp 100 .

To sum up, the large-angle light-emitting LED lamp 100 is provided with a plurality of light source boards 20, each light source board 20 includes a substrate 22 and an LED light source 24, and the substrate 22 includes a light-emitting surface 222 and a reflective surface 224, and these LED light sources 24 It is disposed on the light-emitting surface 222 of the substrate 22 . One side of at least two light source boards 20 is adjacently arranged, and the two light source boards 20 form an angle less than 180°, so that the light emitted on the light emitting surface 222 of the light source board 20 passes through the reflection of the other light source board 20 The surface 224 is reflective toward a direction other than the bulb envelope 30 . Compared with the prior art, since the reflective surface 224 on the light source board 20 can reflect the light emitted by the light emitting surface 222 of another light source board 20 outward, the light output efficiency and the light emitting angle of the large-angle light-emitting LED lamp 100 are improved. , it is no longer necessary to arrange LED light sources on each surface of the three-dimensional bracket, so that the large-angle light-emitting LED lamp of the present invention has the advantages of simpler structure and more convenient assembly.

In addition, in the preferred solution, the number of the light source boards can also be set to four or more, and these light source boards are arranged at equal angles in pairs, and the sum of the angles formed by these light source boards is 360°, so that the large angle can be increased. The brightness of the glowing LED lights. Further, the LED light source of the light source board can also be a surface-emitting light source. This makes it unnecessary to arrange multiple LED light sources on one side of the light source board.

Please refer to FIG. 4 , which shows a three-dimensional exploded view of the second embodiment of the present invention. The difference between this large-angle light-emitting LED lamp 100a and the first embodiment is that the reflective light of each light source board 20a of the LED lamp 100a A light guide section 2242 protrudes from the surface 224a toward the light emitting surface 222a of the other light source board 20a. The light guiding section 2242 protrudes from the bottom of the reflective surface 224a. The light guide section 2242 is set at an obtuse angle to the top 12 of the lamp body 10 , and the light guide section 2242 is used to reflect the light emitted by another light source board 20 away from the lamp body 10 . Therefore, more light is distributed on the top of the large-angle emitting LED lamp 100a, so that the entire light distribution of the large-angle emitting LED lamp 100a is more uniform.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

1. A large-angle light-emitting LED lamp, comprising a lamp body, a bulb shell and a plurality of light source boards, the light source boards are vertically arranged in the middle of the top of the lamp body, and the bulb shell is arranged on the top of the lamp body, each Each light source board includes a substrate and an LED light source, one side of the substrate is a light-emitting surface, the other side of the substrate is a reflective surface, and the LED light source is arranged on the light-emitting surface of the substrate, it is characterized in that at least one light source board The side of the light source board is adjacent to the side of the other light source board, and the reflective surface of one light source board is set at an angle less than 180° relative to the light-emitting surface of the other light source board, so that the light emitted by the light-emitting surface is directed toward the Reflected outside the bulb envelope. 2. The large-angle light-emitting LED lamp according to claim 1, characterized in that: one side of all light source boards is close to the middle of the lamp head body, and the reflective surface of each light source board is sequentially aligned with the light-emitting surface of another light source board Relatively set at an included angle of less than 180°. 3. The large-angle light-emitting LED lamp according to claim 2, characterized in that it comprises three light source boards, and each pair of these light source boards is arranged at an angle of 120°. 4. The large-angle light-emitting LED lamp according to claim 2, characterized in that it includes four or more light source boards, these light source boards are arranged at equal angles in pairs, and the sum of the angles formed by these light source boards is 360° °. 5. The large-angle LED lamp according to claim 1, characterized in that: the bulb shell is a transparent structure made of plastic or glass. 6. The LED lamp with large-angle light emission according to claim 1, characterized in that: the LED light source on the light-emitting surface of each light source board is a surface-emitting light source. 7. The large-angle LED lamp according to claim 1, wherein a plurality of LED light sources are arranged on the light-emitting surface of each light source board, and these LED light sources are packaged together by phosphor layers to form a surface-emitting light source. 8. The large-angle light-emitting LED lamp according to claim 1, wherein each light source board is a rectangular straight board structure. 9. The large-angle light-emitting LED lamp according to any one of claims 1 to 8, characterized in that: the reflective surface of each light source board protrudes toward the light-emitting surface of the other light source board with a light guide section, and the guide section The light section is set at an obtuse angle with the top of the lamp head body, and the light guide section is used to reflect the light emitted by another light source board in a direction away from the lamp head body. 10. The large-angle light-emitting LED lamp according to claim 9, wherein the light guide section is arranged at the bottom of the reflective surface.