Blade assembly and fan display having the same

Patent metadata

Field	Value
Publication number	US-11448392-B2
Application number	US-202016883163-A
Country	US
Kind code	B2
Filing date	May 26, 2020
Priority date	May 28, 2019
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A blade assembly and a fan display including the same. The blade assembly includes a circuit substrate provided in an elongated shape, a lamination board provided in an elongated shape and bonded to the circuit substrate by a laminating glue, and a plurality of light emitting diode (LED) light emitting units. A mounting hole is defined in the lamination board and passes through a thickness of the lamination board. The circuit substrate has a first side attached to the lamination board, the first side and the mounting hole jointly defining a mounting cavity, in which plurality of LED light emitting units are hermetically disposed in the mounting cavity, and are arranged at intervals along a length of the circuit substrate.

First claim

What is claimed is:

1. A blade assembly, comprising:
a circuit substrate;
a lamination board; and
a plurality of light emitting diode (LED) light emitting units;
wherein the circuit substrate and the lamination board each have an elongated shape, and are bonded to each other by a laminating glue; a mounting hole is defined in the lamination board and passes through a thickness of the lamination board; the circuit substrate comprises a first side attached to the lamination board, the first side and the mounting hole jointly defining a mounting cavity; and the plurality of LED light emitting units are hermetically arranged in the mounting cavity and are arranged at intervals along a length of the circuit substrate,
wherein the plurality of LED light emitting units are each a red-green-blue (RGB) light emitting unit, and the RGB light emitting unit comprises a first chip, a second chip, and a third chip that are arranged at intervals, and
wherein each of the first chip, the second chip and the third chip is rectangular and has a length direction is consistent with a width direction of the circuit substrate.

2. The blade assembly of claim 1 , wherein a plurality of columns of light emitting assemblies are arranged at intervals in the mounting cavity along the length of the circuit substrate, each column of the plurality of columns of light emitting assemblies comprising at least one of the plurality of LED light emitting units, and the blade assembly has a center of rotation, and wherein let the number of LED light emitting units contained in one of the plurality of columns of light emitting assemblies adjacent to the center of rotation be X, and the number of LED light emitting units contained in one of the plurality of columns of light emitting assemblies away from the center of rotation be Y, X is less than Y.

3. The blade assembly of claim 2 , wherein when the number of LED light emitting units contained in a column of the plurality of columns of light emitting assemblies is greater than 1, all the LED light emitting units in the light emitting assembly are distributed along a set arc, where a center of the set arc lies at the center of rotation.

4. The blade assembly of claim 2 , wherein along the length of the circuit substrate, every n columns of the plurality of columns of light emitting assemblies is assigned as a group, and there is arranged a total of m groups on the circuit substrate; wherein the light emitting assemblies in a same group have a same number of LED light emitting units, the light emitting assemblies of adjacent groups have different numbers of LED light emitting units, and the number of LED light emitting units contained in the plurality of columns of light emitting assemblies increases in a direction away from the center of rotation.

5. The blade assembly of claim 4 , wherein a difference in the number of LED light emitting units contained in the light emitting assemblies of adjacent groups is all Z.

6. The blade assembly of claim 1 , wherein the plurality of LED light emitting units are encapsulated in the mounting cavity by an encapsulating glue; or
the plurality of LED light emitting units are plastic encapsulated in the mounting cavity; or
glue is dispensed on the plurality of LED light emitting units to form a sealing layer.

7. The blade assembly of claim 1 , wherein the lamination board has a third side attached to the circuit substrate and a fourth side opposite to the third side, and wherein the fourth side is provided with a light absorbing layer, and the mounting cavity is provided with a reflective layer.

8. The blade assembly of claim 1 , wherein the first chip, the second chip and the third chip are arranged at the intervals along a width of the circuit substrate.

9. The blade assembly of claim 8 , wherein the first chip, the second chip, and the third chip of adjacent RGB light emitting units are arranged in a same order, and the first chips of two adjacent RGB light emitting units are arranged adjacent to each other.

10. The blade assembly of claim 1 , wherein the first chip, the second chip and the third chip are arranged at the intervals along the length of the circuit substrate.

11. The blade assembly of claim 1 , wherein the circuit substrate comprises a second side opposite to the first side, and the second side is hermetically provided with a control member, the control member being electrically connected to the LED light emitting unit.

12. The blade assembly of claim 11 , wherein the control member is encapsulated on the second side by an encapsulating glue.

13. The blade assembly of claim 12 , wherein the second side is annularly provided with a circumferential wall, and the control member is encapsulated in the circumferential wall by the encapsulating glue.

14. The blade assembly of claim 12 , wherein the second side is annularly provided with a circumferential wall, wherein an end of the circumferential wall facing away from the second side is provided with a sealing plate, which seals the control member in the circumferential wall.

15. The blade assembly of claim 14 , wherein the sealing plate and the circumferential wall are bonded to each other by an adhesive layer.

16. The blade assembly of claim 14 , wherein the circumferential wall is filled with the encapsulating glue, and the side of the sealing plate facing towards the circumferential wall is provided with a heat dissipation layer.

17. The blade assembly of claim 11 , further comprising a sealing plate spaced at a side of the second side facing away from the first side, wherein a receiving cavity for receiving the control member is formed between the sealing plate and the second side, the sealing plate is adhered to the second side by an annular adhesive layer, and the adhesive layer seals the receiving cavity.

18. A fan display, comprising a blade assembly and a drive assembly configured for driving the blade assembly into rotation, the blade assembly being the blade assembly of claim 1 .

Assignees

• Foshan Nationstar Optoelectronics Co Ltd

Inventors

• Zhao Qiang
• Qin Kuai
• Guo Heng
• Wang Changqi
• Xie Zongxian
• Fan Kailiang

Classifications

• H10W90/00

  Package configurations · CPC title

• H10W76/10

  Containers or parts thereof · CPC title

• H10W74/00

  Encapsulations, e.g. protective coatings · CPC title

• G09F19/125

  Stereoscopic displays; 3D displays · CPC title

• F21Y2105/12

  characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities · CPC title