LED lamp bead capable of improving light spots and luminous efficiency

Abstract

The utility model discloses an LED lamp bead capable of improving light spots and luminous efficiency, which comprises an LED support, an LED wafer, a lead frame, a red fluorescent sheet and a green fluorescent sheet, the LED wafer is mounted in an inner cavity of the LED support and is connected with the lead frame mounted at the lower end of the LED support through a connecting wire, the red fluorescent sheet is positioned above the green fluorescent sheet, and the red fluorescent sheet is connected with the lead frame through a connecting wire. The red fluorescent sheet and the green fluorescent sheet are both installed on the top of the inner cavity of the LED support and located above the LED wafer, and the red fluorescent sheet and the green fluorescent sheet are connected through transparent adhesive glue. According to the utility model, the structure is simple, the design is reasonable, the blue-light LED wafer is matched with the red fluorescent sheet and the green fluorescent sheet, the problems of low LED luminous efficiency, poor color consistency in batch production and the like can be solved in a fluorescent sheet stacking mode, the light spot problem can be improved, the light attenuation is smaller, and safe illumination and healthy illumination can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED technical field more particularly, it is a kind of LED lamp bead that can improve light spot and luminous efficiency. BACKGROUND

[0002] There are multiple ways for LED to achieve white light, and the way that is developed earlier and has achieved industrialization is to coat phosphor on LED to achieve white light emission, wherein, the LED adopts the following method to achieve white light using phosphor: mixed phosphor is coated on blue LED wafer, white light is obtained by the light emitted by wafer and the light emitted by phosphor, and the color rendering is good, but the effective conversion efficiency of the phosphor used in this method is low, the light emission stability is poor, there is the problem of uneven light spot, the light decay is large, the color consistency is poor in batch production (phosphor is easy to precipitate in glue to different degrees), the luminous efficiency is low, the product manufacturing process is extensive, and material waste is serious. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects in the prior art, and provides a kind of LED lamp bead that can improve light spot and luminous efficiency.

[0004] To achieve the above object, the utility model provides a kind of LED lamp bead that can improve light spot and luminous efficiency, including LED support, blue light's LED wafer, lead frame, red phosphor sheet and green phosphor sheet, the LED wafer is installed in the inner chamber of LED support, the LED wafer is connected with the lead frame installed in the lower end of LED support by connecting wire, the red phosphor sheet is located above green phosphor sheet, the red phosphor sheet and green phosphor sheet are installed in the inner chamber top of LED support and located above LED wafer, the red phosphor sheet is connected with green phosphor sheet by transparent adhesive.

[0005] As preferred, in the above technical solution, the LED support is set to PLCC support.

[0006] As preferred, in the above technical solution, the adhesive is set to heat-conducting optical adhesive.

[0007] As preferred, in the above technical solution, the red phosphor sheet is set to red phosphor glass sheet, and the green phosphor sheet is set to green phosphor glass sheet.

[0008] As preferred, in the above technical solution, the lead frame includes first pin part and second pin part, the cross-sectional shape of the first pin part and the second pin part is respectively set to U shape, and one end of the first pin part and the second pin part respectively extends out of the two sides of the LED support.

[0009] Compared with the prior art, the LED lamp bead has the advantages that:

[0010] The LED lamp bead has the advantages that the LED chip of blue light is matched with the red fluorescent sheet and the green fluorescent sheet, the problems of low LED light emitting efficiency and poor color consistency in batch production can be solved through the fluorescent sheet superposition mode, the light spot problem can be improved, the light decay is small, safe lighting and healthy lighting can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0012] Figure 1 The structure of the LED lamp bead provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0014] Please refer to Figure 1 The embodiment of the present application provides an LED lamp bead capable of improving light spot and light emitting efficiency, which comprises an LED support 1, an LED chip 2, a lead frame 3, a red fluorescent sheet 4 and a green fluorescent sheet 5. The components of the embodiment will be described in detail below in combination with the drawings.

[0015] In the embodiment, the LED support 1 can be a PLCC support, and the middle part of the LED support 1 is provided with an inner cavity.

[0016] As Figure 1 shown, the lead frame 3 can comprise a first pin part 31 and a second pin part 32, and the cross-sectional shape of the first pin part 31 and the second pin part 32 can be preferably set as U-shaped. One end of the first pin part 31 and the second pin part 32 is respectively mounted in the inner part of the LED support, and the other end of the first pin part 31 and the second pin part 32 respectively extends out of the two sides of the LED support. The lead frame 3 can be made of a metal conductive material.

[0017] The LED wafer 2 is mounted in the inner cavity of the LED support 1, and the LED wafer 2 is connected with the first lead 31 and the second lead 32 of the lead frame 3 through the connecting wire 7 (such as gold wire, copper wire or other metal wire).

[0018] The red fluorescent sheet 4 is located above the green fluorescent sheet 5, and the red fluorescent sheet 4 and the green fluorescent sheet 5 are mounted at the top of the inner cavity of the LED support 1 and above the LED wafer 2, and the red fluorescent sheet 4 and the green fluorescent sheet 5 are connected through the transparent adhesive 6.

[0019] In the embodiment, the LED wafer 2 can be a blue LED wafer 2.

[0020] In the embodiment, the red fluorescent sheet 4 can be a red fluorescent glass sheet, and the green fluorescent sheet 5 can be a green fluorescent glass sheet.

[0021] In operation, the blue light emitted by the LED wafer 2 can pass through the green fluorescent sheet 5 and the red fluorescent sheet 4 to form white light.

[0022] In summary, the utility model has the advantages of simple structure and reasonable design, the LED wafer with blue light is matched with the red fluorescent sheet and the green fluorescent sheet, the problems of low LED light-emitting efficiency and poor color consistency in batch production can be overcome through the fluorescent sheet superposition mode, the light spot problem can be improved, the light decay is small, safe lighting and healthy lighting can be realized.

[0023] The above embodiment is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited to the above embodiment, and any change, modification, replacement, combination and simplification without departing from the spirit and principle of the utility model should be equivalent replacement mode, and all are included in the protection scope of the utility model.

Claims

1. An LED lamp bead capable of improving light spot and luminous efficiency, comprising an LED support, an LED wafer of blue light and a lead frame, the LED wafer is installed in the inner cavity of the LED support, the LED wafer is connected with the lead frame installed at the lower end of the LED support through a connecting line, characterized in that: The LED bracket is provided with a red fluorescent sheet and a green fluorescent sheet, the red fluorescent sheet is arranged above the green fluorescent sheet, the red fluorescent sheet and the green fluorescent sheet are arranged on the top of the inner cavity of the LED bracket and above the LED wafer, and the red fluorescent sheet and the green fluorescent sheet are connected through transparent adhesive glue. ​ 2. The LED lamp bead capable of improving light spot and luminous efficiency according to claim 1, characterized in that: The LED bracket is provided as a PLCC bracket. 3.The LED lamp bead capable of improving light spot and luminous efficiency according to claim 1, wherein: The adhesive glue is provided as heat-conducting optical adhesive glue.

4. The LED lamp bead capable of improving light spot and luminous efficiency according to claim 1, characterized in that: The red fluorescent sheet is provided as a red fluorescent glass sheet, and the green fluorescent sheet is provided as a green fluorescent glass sheet.

5. The LED lamp bead capable of improving light spot and luminous efficiency according to claim 1, characterized in that: The lead frame comprises a first lead portion and a second lead portion, the cross-sectional shapes of the first lead portion and the second lead portion are respectively provided as U shapes, and one end of the first lead portion and the second lead portion respectively extends out of the two sides of the LED bracket.

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