Surface-mount light-emitting diode (LED) having tuning-fork-shaped electrode pad

Abstract

A surface-mount light-emitting diode (LED) having a tuning-fork-shaped electrode pad. The surface-mount LED comprises a housing (1) having a light-emitting chamber (2), and a first electrode pad (3), a second electrode pad (4), a third electrode pad (5) and a fourth electrode pad (6), wherein the first electrode pad (3) is of a tuning-fork-shaped structure, the tuning-fork-shaped structure divides the lower surface of the light-emitting chamber into three sections, and the second electrode pad, the third electrode pad and the fourth electrode pad are respectively arranged in the three sections; and a red chip (7), a blue chip (8) and a green chip (9) are respectively provided on three end portions of the tuning-fork-shaped structure, the first electrode pad serves as a common electrode for the red chip, the blue chip and the green chip, and the second electrode pad, the third electrode pad and the fourth electrode pad are respectively electrically connected to the other electrode leads of the red chip, blue chip and green chip. Thus, the arrangement spacing between the three light-emitting chips is increased.

Description

An LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet Technical Field

[0001] The utility model relates to the technical field of LED mounted light-emitting tubes, in particular to an LED mounted light-emitting tube with a tuning fork-shaped electrode sheet. Background Art

[0002] Outdoor LED displays are currently trending towards high-density, fine-pitch displays. These high-density and fine-pitch displays require the smallest possible LED tube size and the highest possible luminous efficiency. However, as the tube size of fine-pitch displays decreases, the spacing between the red, green, and blue LED chips within a single lamp cup becomes closer. This proximity of the red chip affects the adjacent green and blue chips, reducing their luminous efficiency. Furthermore, this closer spacing between the three-color chips increases the temperature rise of surface-mount LED tubes, leading to greater light decay and reduced product stability.

[0003] Utility Model Content

[0004] The purpose of the utility model is to provide an LED mounted light-emitting tube with a tuning fork-shaped electrode sheet to solve the problems existing in the prior art. The light-emitting tube has a good heat dissipation effect and ensures the luminous efficiency and stability of the red chip, the green chip and the blue chip.

[0005] To achieve the above-mentioned objectives, the present invention provides the following solution: The present invention provides an LED surface-mounted light-emitting tube with a tuning-fork-shaped electrode sheet, comprising a shell having a light-emitting chamber and a first electrode sheet, a second electrode sheet, a third electrode sheet, and a fourth electrode sheet arranged at intervals on the lower surface of the light-emitting chamber, wherein the first electrode sheet is a tuning-fork-shaped structure, which divides the lower surface of the light-emitting chamber into three partitions, and the second electrode sheet, the third electrode sheet, and the fourth electrode sheet are respectively arranged in the three partitions; a red chip, a blue chip, and a green chip are respectively arranged at the three ends of the tuning-fork-shaped structure, the first electrode sheet serves as a common electrode for the red chip, the blue chip, and the green chip, and the second electrode sheet, the third electrode sheet, and the fourth electrode sheet are respectively electrically connected to the other electrode lead of the red chip, the blue chip, and the green chip.

[0006] Preferably, the bottom of the shell has 6 pins, and the 6 pins are respectively connected to the ends of the first electrode sheet, the second electrode sheet, the third electrode sheet and the fourth electrode sheet.

[0007] Preferably, the six pins are symmetrically distributed at both ends of the bottom of the shell.

[0008] Preferably, the bottom of the housing has a groove for accommodating the pin.

[0009] Preferably, slots are horizontally provided at the bottom of the side walls on both sides of the lead-out direction of the pins in the light-emitting chamber, and the sides of the first electrode sheet, the second electrode sheet and the third electrode sheet are all inserted into the slots.

[0010] Preferably, the cross-sectional area of ​​the light-emitting chamber expands from bottom to top.

[0011] Preferably, the first electrode sheet, the second electrode sheet, the third electrode sheet and the fourth electrode sheet are all made of copper sheets with silver-plated surfaces, and the shell is made of insulating material.

[0012] Preferably, the projected area of ​​the first electrode sheet on the lower surface of the light-emitting chamber is not less than half of the total area of ​​the lower surface of the light-emitting chamber.

[0013] Compared with the prior art, the utility model has achieved the following technical effects:

[0014] 1. The present invention rationally partitions the lower surface of the light-emitting chamber by providing a tuning-fork-shaped first electrode sheet, and conventionally shaped second, third, and fourth electrode sheets. Furthermore, the red, green, and blue chips are respectively arranged at the three ends of the tuning-fork-shaped first electrode sheet, thereby increasing the arrangement spacing between the red, green, and blue chips, thereby preventing mutual influence between the three chips during light emission and ensuring the light-emitting efficiency of the red, green, and blue chips.

[0015] 2. The present invention arranges the red chip, green chip, and blue chip on the first electrode sheet. The three light-emitting chips can dissipate heat through the tuning fork-shaped first electrode sheet, shortening the heat dissipation and heat conduction path of the chips.

[0016] 3. The tuning fork-shaped first electrode has a relatively large area, which increases the heat dissipation area of ​​the electrode, is beneficial to heat dissipation, and ensures the working stability of the light-emitting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] FIG1 is a schematic structural diagram of an LED surface-mounted light-emitting diode with a tuning fork-shaped electrode sheet in the present invention;

[0019] FIG2 is a front view of an LED surface-mounted light-emitting tube having a tuning fork-shaped electrode sheet;

[0020] FIG3 is a top view of an LED surface-mounted light-emitting diode having a tuning fork-shaped electrode sheet;

[0021] FIG4 is a cross-sectional view taken along line AA in FIG3 ;

[0022] FIG5 is a cross-sectional view taken along line BB in FIG3 ;

[0023] Among them, 1. Shell; 2. Light-emitting chamber; 3. First electrode sheet; 4. Second electrode sheet; 5. Third electrode sheet; 6. Fourth electrode sheet; 7. Red chip; 8. Blue chip; 9. Green chip; 10. Pin; 11. Groove; 12. Slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The purpose of the utility model is to provide an LED mounted light-emitting tube with a tuning fork-shaped electrode sheet to solve the problems existing in the prior art. The light-emitting tube has a good heat dissipation effect and ensures the luminous efficiency and stability of the red chip, the green chip and the blue chip.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] As shown in Figures 1 to 5, this embodiment provides an LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet, comprising a housing 1 having a light-emitting chamber 2 and four metal sheets spaced apart on the lower surface of the light-emitting chamber 2, namely a first electrode sheet 3, a second electrode sheet 4, a third electrode sheet 5, and a fourth electrode sheet 6. The first electrode sheet 3 is a tuning fork-shaped structure, the three ends of which extend to the bottom of the side wall of the light-emitting chamber 2, and the tuning fork-shaped structure divides the lower surface of the light-emitting chamber 2 into three partitions. The second electrode sheet 4, the third electrode sheet 5, and the fourth electrode sheet 6 are respectively arranged in the three partitions. A red chip 7, a blue chip 8, and a green chip 9 are respectively arranged at the three ends of the tuning fork-shaped structure. The first electrode sheet 3 serves as a common electrode for the red chip 7, the blue chip 8, and the green chip 9. The second electrode sheet 4, the third electrode sheet 5, and the fourth electrode sheet 6 are respectively electrically connected to the other electrode leads of the red chip 7, the blue chip 8, and the green chip 9.

[0028] This embodiment rationally partitions the lower surface of the light-emitting chamber 2 by providing a tuning-fork-shaped first electrode sheet 3, a conventionally shaped second electrode sheet 4, a third electrode sheet 5, and a fourth electrode sheet 6. Furthermore, the red chip 7, the green chip 9, and the blue chip 8 are respectively provided at the three ends of the tuning-fork-shaped first electrode sheet 3, thereby increasing the arrangement spacing between the red chip 7, the green chip 9, and the blue chip 8, thereby preventing the three chips from interfering with each other during light emission and ensuring the luminous efficiency of the red chip 7, the green chip 9, and the blue chip 8. Furthermore, in this embodiment, the red chip 7, the green chip 9, and the blue chip 8 are all provided on the first electrode sheet 3. The three light-emitting chips can dissipate heat through the tuning-fork-shaped first electrode sheet 3, shortening the heat dissipation path of the chips. At the same time, the tuning-fork-shaped first electrode sheet 3 has a relatively large area, which increases the heat dissipation area of ​​the electrode sheet, facilitates heat dissipation, and ensures the operating stability of the light-emitting tube.

[0029] In this embodiment, the projection area of ​​the first electrode sheet 3 on the lower surface of the light-emitting chamber 2 is not less than half of the total area of ​​the lower surface of the light-emitting chamber 2 .

[0030] In this embodiment, the red chip 7, green chip 9, and blue chip 8 can be arranged at any end of the tuning fork-shaped structure; the second electrode sheet 4, the third electrode sheet 5, and the fourth electrode sheet 6 can be arranged in any one of the three partitions. Specifically, the red chip 7 and the second electrode sheet 4, the blue chip 8 and the third electrode sheet 5, and the green chip 9 and the fourth electrode sheet 6 correspond in position in the y direction. The red chip 7 and the blue chip 8 are respectively located at the ends of the U-shaped shape in the tuning fork-shaped structure, and the green chip 9 is located at the end of the "handle" in the tuning fork-shaped structure; the second electrode sheet 4 and the third electrode sheet 5 are respectively located on both sides of the "handle", and the fourth electrode sheet 6 is located in the partition surrounded by the U-shaped shape.

[0031] In this embodiment, the bottom of the housing 1 has six pins 10, three of which are connected to the three ends of the first electrode sheet 3, and the other three are connected to the ends of the second electrode sheet 4, the third electrode sheet 5, and the fourth electrode sheet 6. During use, the pins 10 are used to weld the light-emitting tube and power it. The provision of six pins 10 can significantly improve the welding strength of the light-emitting tube. The pins 10 can be formed by metal connectors fixed to the bottom of the housing 1, or by the six ends of the first electrode sheet 3, the second electrode sheet 4, the third electrode sheet 5, and the fourth electrode sheet 6 are bent downward and extended to the bottom of the housing 1.

[0032] The first electrode sheet 3 , the second electrode sheet 4 , the third electrode sheet 5 and the fourth electrode sheet 6 are all made of copper sheets with silver-plated surfaces, and the housing 1 is made of insulating material.

[0033] Furthermore, in this embodiment, six pins 10 are symmetrically distributed at both ends of the bottom of the housing 1 ; and the bottom of the housing 1 has a groove 11 for accommodating the pins 10 .

[0034] The six pins 10 are symmetrically arranged along the center line of the x direction. In the x direction, slots 12 are horizontally arranged at the bottom of the two side walls of the light-emitting chamber 2, and the sides of the first electrode sheet 3, the second electrode sheet 4 and the third electrode sheet 5 are all inserted into the slots 12.

[0035] In this embodiment, the cross-sectional area of ​​the light-emitting chamber 2 increases from bottom to top.

[0036] Adaptive changes based on actual needs are all within the protection scope of this utility model.

[0037] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

Claims

1. An LED surface-mounted light-emitting tube with a tuning fork-shaped electrode plate, characterized in that, It includes a housing with a light-emitting chamber, and a first electrode plate, a second electrode plate, a third electrode plate and a fourth electrode plate which are spaced and arranged on the lower surface of the light-emitting chamber. The first electrode plate is in a tuning fork shape structure, and the tuning fork shape structure divides the lower surface of the light-emitting chamber into three partitions. The second electrode plate, the third electrode plate and the fourth electrode plate are respectively arranged in the three partitions. Red chips, blue chips and green chips are respectively arranged at the three end parts of the tuning fork shape structure. The first electrode plate serves as the common electrode of the red chips, the blue chips and the green chips. The second electrode plate, the third electrode plate and the fourth electrode plate are respectively electrically connected to the other electrode leads of the red chips, the blue chips and the green chips.

2. The LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet according to claim 1, wherein The bottom of the housing has 6 pins, and the 6 pins are respectively connected to the ends of the first electrode plate, the second electrode plate, the third electrode plate and the fourth electrode plate.

3. The LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet according to claim 2, characterized in that, The 6 pins are symmetrically distributed at both ends of the bottom of the housing.

4. The LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet according to claim 3, characterized in that, The bottom of the housing has a groove for accommodating the pins.

5. The LED surface-mount light-emitting tube with a tuning fork-shaped electrode sheet according to claim 2, wherein Slots are horizontally arranged at the bottom of the side walls on both sides of the direction in which the pins extend out in the light-emitting chamber, and the sides of the first electrode plate, the second electrode plate and the third electrode plate are all inserted into the slots.

6. The LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet according to claim 1, wherein The cross-sectional area of the light-emitting chamber expands from bottom to top.

7. The LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet according to claim 1, characterized in that, The first electrode plate, the second electrode plate, the third electrode plate and the fourth electrode plate are all made of copper sheets with silver plating on the surface. The housing is made of insulating material.

8. The LED surface-mounted light-emitting tube with a tuning fork-shaped electrode sheet according to claim 1, characterized in that, The projected area of the first electrode plate on the lower surface of the light-emitting chamber is not less than one half of the total area of the lower surface of the light-emitting chamber.

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