A multi-faceted LED lamp bead

Abstract

A multi-faceted light-emitting LED lamp bead, comprising a support and two electrodes arranged on the support, the support is in a semi-spherical structure, and a plurality of mounting grooves are arranged on the support; the lamp bead further comprises LED chips, the LED chips are respectively attached in the mounting grooves, and the mounting grooves are filled with fluorescent glue to encapsulate the LED chips; the light-refracting piece comprises a cover body and a light-refracting portion formed on the top of the cover body, the cover body covers the LED chips, the inner side surface of the cover body defines an incident surface for light incidence, the light-refracting portion extends in the mounting groove and is exposed outside the fluorescent glue, and the surface of the light-refracting portion is provided as an exit surface for light emission. The light emitted by the chip is refracted by the light-refracting piece, so that the light can be emitted in multiple directions, and under the cooperation of the light-refracting pieces, the lamp bead can emit light in multiple directions and at a larger angle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of LED lighting technology, in particular to a LED lamp bead capable of multi-surface light emission. BACKGROUND

[0002] A light emitting diode (LED) is a kind of semiconductor light emitting device, which produces photons by the recombination of electrons and holes. The LED has the advantages of high light emitting efficiency, good color rendering, low power consumption, environmental protection and energy saving, high safety and long service life.

[0003] At present, the LED lamp bead is mostly a patch type lamp bead, which is generally provided with a bracket and an installation groove formed in the bracket. The LED chip is sealed in the installation groove by fluorescent glue. In the process of lighting, the light emitted by the LED chip is emitted along the fluorescent glue, thereby realizing lighting. However, in the process of light emission, the light is limited by the outline of the installation groove, so that the range angle of light emission is determined by the outline of the installation groove. Therefore, the lighting angle is severely limited, and multi-surface and multi-angle lighting cannot be realized. SUMMARY

[0004] The purpose of the present application is to provide a LED lamp bead capable of multi-surface light emission. In order to solve the above technical problems, the present application adopts the following technical solutions:

[0005] A LED lamp bead capable of multi-surface light emission comprises a bracket and two electrodes arranged on the bracket. The bracket is in a hemispherical structure. A plurality of installation grooves are arranged on the bracket. The installation grooves comprise a main groove arranged on the top of the bracket and a plurality of auxiliary grooves arranged at equal intervals in the circumferential direction on the side surface of the bracket. The lamp bead further comprises:

[0006] LED chips. The LED chips correspond to the installation grooves and are connected to the electrodes by gold wires respectively. A plurality of LED chips are attached to the installation grooves respectively. The installation grooves are filled with fluorescent glue to encapsulate the LED chips.

[0007] A light folding member comprises a cover body and a light folding part formed on the top of the cover body. The light folding part is in a multi-prism structure. The cover body is arranged in the installation groove and encapsulated by the fluorescent glue. The cover body encloses the LED chip. The inner surface of the cover body defines an incident surface for light incidence. The light folding part extends into the installation groove and leaks out of the fluorescent glue to the outside. The surface of the light folding part is provided as an exit surface for light emission.

[0008] Further, the inner wall of the installation groove is provided as a smooth total reflection surface. A light leakage gap is defined between the cover body and the LED chip.

[0009] Further, a circular arc transition surface is arranged between the end of the light folding part and the side wall.

[0010] Further, a curved compound eye array is arranged on the surface of at least the end of the light folding part.

[0011] Further, a circular arc transition surface is arranged at the corner of the light folding part.

[0012] The present application has the following beneficial effects:

[0013] In the technical scheme provided by the present application, the support is arranged as a hemispherical structure, so that the support has a larger angle and is spaced apart from multiple planes without corners. The sub-grooves are arranged on the circular arc surface of the side surface of the hemispherical structure and are arranged at equal intervals in the circumferential direction. The main groove is arranged at the top position. The LED chip is encapsulated in the mounting groove by fluorescent glue. At the same time, the cover of the light folding piece is also encapsulated in the mounting groove by fluorescent glue and covers the LED chip. Thus, the light of the LED chip can be incident into the light folding piece at the incident surface. The light folding part of the light folding piece protrudes outside the mounting groove and protrudes from the mounting groove sealed by the fluorescent glue. The light is emitted at the exit surface of the light folding part. Since the light folding part is arranged as a multi-prism structure, the light can be emitted at the prism surface, thereby improving the emission angle and area of the light. Under the cooperation of multiple light folding pieces, the illumination angle and area of the lamp bead can be improved, and the multi-surface light emitting effect is realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the present application.

[0015] Figure 2 It is a sectional view of the present application.

[0016] Figure 3 It is a sectional view of the light folding piece in the present application.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the light folding piece in the present application.

[0018] In the drawings: 100 - support; 100 - mounting groove; 111 - main groove; 112 - sub-groove; 120 - chip; 200 - light folding piece; 210 - cover; 220 - light folding part; 211 - incident surface; 221 - exit surface; 113 - reflecting surface; 114 - fluorescent glue; 201 - compound eye array. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the present application will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments is not a limitation of the present application. The present application will be described in detail below in conjunction with the drawings.

[0020] The embodiment of the present application provides a multi-surface light-emitting LED lamp bead, specifically, a plurality of LED chips 120 are arranged on the support 100, and a light folding piece 200 is arranged in the mounting groove 110 for mounting the LED chip 120, specifically, the cover 210 of the light folding piece 200 is used to cover the LED chip 120, so that the light of the LED chip 120 can be emitted along the incident surface 211 of the cover 210 and emitted from the emitting surface 221 of the surface of the light folding part 220, and the light folding part 220 is a multi-prism structure, which is a triangular prism in the embodiment, and can be a quadrangular prism or a pentagonal prism in other embodiments, so that the emitting surface 221 of the light folding part 220 can be multiple, so that the light can be irradiated in multiple directions under the reflection of the light folding part 220, and since the support 100 is provided with a plurality of LED chips 120 and a plurality of light folding pieces 200, the lamp bead can be irradiated in multiple directions, the irradiation area of the lamp bead is improved, and the irradiation angle is improved.

[0021] Specifically, as shown in the figure, Figures 1-4 The embodiment of the present application provides a multi-surface light-emitting LED lamp bead, which comprises a support 100 and two electrodes arranged on the support 100, the support 100 is a hemispherical structure, a plurality of mounting grooves 110 are arranged on the support 100, the mounting groove 110 comprises a main groove 111 arranged on the top of the support 100 and a secondary groove 112 arranged on the side surface of the support 100 at equal intervals in the circumferential direction; the lamp bead is further provided with an LED chip 120 and a light folding piece 200, specifically, the LED chip 120 comprises a plurality of LED chips corresponding to the mounting groove 110 and connected with the electrodes through gold wires respectively, the plurality of LED chips 120 are mounted in the mounting groove 110 respectively, the mounting groove 110 is filled with fluorescent glue 114 to encapsulate the LED chip 120; the light folding piece 200 comprises a cover 210 and a light folding part 220 formed on the top of the cover 210, the light folding part 220 is a multi-prism structure, the cover 210 is arranged in the mounting groove 110 and encapsulated by the fluorescent glue 114, and the cover 210 is used to cover the LED chip 120, the inner surface of the cover 210 defines an incident surface 211 for light incidence, the light folding part 220 extends in the mounting groove and leaks out of the fluorescent glue 114 to the outside, and the surface of the light folding part 220 is provided with an emitting surface 221 for light emission.

[0022] That is to say, the support 100 is arranged as a hemispherical structure, which can make the support 100 have a larger angle and be spaced apart without edges and corners between multiple planes, the sub-grooves 112 are arranged on the circular arc surfaces of the side surfaces of the hemispherical structure and are arranged at equal intervals in the circumferential direction, the main groove 111 is arranged at the top position, the LED chip 120 is encapsulated in the mounting groove 110 by the fluorescent glue 114, meanwhile, the cover 210 of the light folding piece 200 is also encapsulated in the mounting groove 110 by the fluorescent glue 114 and encloses the LED chip 120, so that the light of the LED chip 120 can be incident into the light folding piece 200 through the incident surface 211, the light folding part 220 of the light folding piece 200 extends outside the mounting groove 110 and protrudes from the mounting groove 110 sealed by the fluorescent glue 114, and the light is emitted from the exit surface 221 of the light folding part 220. Since the light folding part 220 is arranged as a multi-prism structure, the light can be emitted from the prism surface, thereby improving the emission angle and area of the light. Under the cooperation of multiple light folding pieces 200, the illumination angle and area of the lamp bead can be improved, and the multi-surface light emitting effect can be realized.

[0023] In the embodiment, the inner wall of the mounting groove 110 is arranged as a smooth total reflection surface 113, and a light leakage gap is defined between the cover 210 and the LED chip 120. After the LED chip 120 emits light, part of the light will inevitably not be incident into the light folding piece 200 along the incident surface 211. Therefore, the light leakage gap is arranged between the cover 210 and the LED chip 120 for light leakage. The light can directly irradiate onto the reflection surface 113 of the mounting groove 110 through the light leakage gap, and the light is reflected by the reflection surface 113 and then emitted through the fluorescent glue 114. It should be noted that when the cover 210 encloses the LED chip 120 as much as possible, in order to make the light be incident along the incident surface 211, the LED chip 120 is completely sealed in the experiment, that is, the cover 210 is in abutment with the bottom of the mounting groove 110, so that the LED chip 120 is completely sealed inside. However, this is not conducive to the heat dissipation of the chip 120. Therefore, the cover 210 cannot be completely sealed with the bottom of the mounting groove 110 for the chip 120, but can only be enclosed as much as possible. However, part of the light will be blocked and refracted by the edge of the cover 210, which will cause light loss. However, after the distance between the cover 210 and the LED chip 120 is increased and the light leakage gap is formed, the light can be smoothly emitted along the light leakage gap and reflected by the reflection surface 113 out of the mounting groove 110, thereby reducing light loss and ensuring the heat dissipation capacity of the LED chip 120.

[0024] In the embodiment, the end of the light folding part 220 and the side wall are provided with a circular arc transition surface. By providing the circular arc transition surface between the end of the light folding part 220 and the side wall, the light can be emitted more uniformly when the light is emitted from the transition part between the light folding part and the side wall, and the uniformity of the light is ensured.

[0025] In the embodiment, in order to improve the uniformity and softness of the pipeline, a curved compound eye array 201 is arranged on the surface of at least the end of the light folding part 220. In the embodiment, the compound eye array 201 is arranged on the end surface of the light folding part 220, and it can be understood that the compound eye array 201 can also be arranged on the entire surface of the light folding part 220.

[0026] In the embodiment, the corners of the light folding part 220 are provided with a circular arc transition surface. As described above, by providing the corners with a circular arc transition surface, the light can be emitted more uniformly when the light is emitted from the position where the two corners are connected, and the light emitted along the corner in a straight line parallel to the direction of the prism axis is avoided.

[0027] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as the above preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any simple modification, equivalent change and modification of the above embodiment within the scope of the present application are all within the scope of the present application.

Claims

1. A multi-faceted light emitting diode (LED) lamp bead, comprising a support and two electrodes arranged on the support, characterized in that, The bracket is in a hemispherical structure, and a plurality of installation grooves are arranged on the bracket, including a main groove arranged on the top of the bracket and a plurality of secondary grooves arranged equidistantly along the circumferential direction on the side of the bracket. The LED chip includes a plurality of LED chips corresponding to the installation grooves and connected to the electrodes by gold wires respectively, and the LED chips are respectively attached in the installation grooves and encapsulated by the fluorescent glue. The light folding piece includes a cover body and a light folding portion formed on the top of the cover body, the light folding portion is in a polygonal structure, the cover body is arranged in the installation groove and encapsulated by the fluorescent glue, and the cover body encloses the LED chip, the inner surface of the cover body defines an incident surface for light incidence, the light folding portion extends in the installation groove and is exposed outside the fluorescent glue, and the surface of the light folding portion is arranged as an exit surface for light emission.

2. The multi-faceted light emitting LED lamp bead according to claim 1, characterized in that, The inner wall of the installation groove is arranged as a smooth total reflection surface, and a light leakage gap is defined between the cover body and the LED chip.

3. The multi-faceted LED lamp bead of claim 1, wherein, A circular arc transition surface is arranged between the end of the light folding portion and the side wall.

4. The multi-faceted light emitting LED lamp bead according to claim 3, characterized in that, A curved compound eye array is arranged on at least the surface of the end of the light folding portion.

5. The multi-faceted light emitting LED lamp bead according to claim 1, characterized in that, A circular arc transition surface is arranged at the corner of the light folding portion.

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