LED lighting tube device and method

• US 10,816,146 B2
• Filed: 06/12/2020
• Issued: 10/27/2020
• Est. Priority Date: 10/20/2014
• Status: Active Grant

• Current Assignee: Argo Import-Export LTD.
• Original Assignee: Argo Import-Export LTD.
• Inventors: Yingchun, Zhang
• Primary Examiner(s): Harris, William N
• Application Number:
  US16/900,111
• Publication Number:
  US 20200300421A1
• Time in Patent Office: 137 Days
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• CPC Class Codes: F21K 9/278 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21K 9/90 Methods of manufacture
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 23/005 the substrate is supporting also the light source
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 25/04 breaking the electric circuit
• CPC Class Codes: F21V 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 3/062 the material being plastics
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01R 33/96 with switch operated by engagement or disengagement of coupling
• CPC Class Codes: H05B 45/3578 Emulating the electrical or functional characteristics of discharge lamps
• CPC Class Codes: H05B 45/395 Linear regulators
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An LED lighting tube including a heat-dissipating tubular envelope having an LED assembly directly affixed to an inner surface of the heat-dissipating tubular envelope. A method of making an LED lighting tube by providing a heat-dissipating tubular envelope, and affixing an LED assembly directly to an inner surface of the heat-dissipating tubular envelope with an adhesive layer. A method of providing heat-dissipation without a heat sink in an LED lighting tube by providing a heat-dissipating tubular envelope, affixing an LED assembly directly to an inner surface of the heat-dissipating tubular envelope with an adhesive layer, and dissipating heat through the heat-dissipating tubular envelope.

Claims

1. An LED lighting tube, comprising:

a heat-dissipating tubular envelope including an LED assembly including a substantially flat LED board having an LED array attached to an upper surface of said LED board and an opposite base surface of said LED board entirely and directly affixed to a curved inner surface of said heat-dissipating tubular envelope and an adhesive layer consisting of a non-insulating adhesive that extends an entire length of said LED assembly between said base surface of said LED board and said curved surface of said heat-dissipating tubular envelope, wherein open ends of said heat-dissipating tubular envelope are closed by end caps, said LED board including a first end in electrical communication with a first electrical connector and a second end in electrical communication with a second electrical connector, wherein said first electrical connector and said second electrical connector are connectable to an electrical receptacle of a light fixture through said end caps, wherein an inner space of said heat-dissipating tubular envelope includes ambient atmosphere, wherein said LED array emits light chosen from the group consisting of white light, pink light, blue light, yellow light, green light, red light, orange light, infrared light, and ultraviolet light, wherein said heat-dissipating tubular envelope has a diameter chosen from the group consisting of ¼

″

, ½

″

, ⅝

″

, 1″

, and 1½

″

, and a length chosen from the group consisting of 6″

, 9″

, 12″

, 18″

, 48″

, and 96″

, and further including a protective film operatively attached to said heat-dissipating tubular envelope.

2. The LED lighting tube of claim 1, wherein said heat-dissipating tubular envelope is made of a material selected from the group consisting of glass and plastic.

3. The LED lighting tube of claim 1, wherein said LED board includes voltage and current regulating circuits.

4. The LED lighting tube of claim 1, wherein said LED board covers at least one lateral side of said LED assembly.

5. The LED lighting tube of claim 1, wherein said LED board further includes a heat-dissipating base affixed to a lower side of said LED board.

6. The LED lighting tube of claim 5, wherein said heat-dissipating base is made of a material chosen from the group consisting of aluminum foil, aluminum, aluminum alloy, steel, steel alloy, copper, copper alloy, and mixtures thereof.

7. The LED lighting tube of claim 5, wherein said LED board is made of polycarbonate.

8. The LED lighting tube of claim 1, wherein said adhesive layer is a material chosen from the group consisting of epoxy resin, silicone adhesive, and double-sided adhesive tape.

9. The LED lighting tube of claim 1, wherein said LED assembly includes an LED board made of a material chosen from the group consisting of aluminum, aluminum alloy, steel, steel alloy, copper, and copper alloy.

10. The LED lighting tube of claim 1, wherein said protective film is further defined as a heat-treated plastic film attached to an exterior surface of said heat-dissipating tubular envelope.

11. The LED lighting tube of claim 10, wherein said heat-treated plastic film is made of polyethylene terephthalate.

12. A method of making an LED lighting tube, including the steps of:

providing a heat-dissipating tubular envelope; and

affixing a surface of a base portion an LED assembly directly to a curved inner surface of the heat-dissipating tubular envelope with an adhesive layer consisting of a non-insulating adhesive that extends an entire length of the LED assembly, wherein the LED assembly includes an LED board having an LED array attached to an upper surface opposite of the base portion, wherein open ends of the heat-dissipating tubular envelope are closed by end caps, the LED board including a first end in electrical communication with a first electrical connector and a second end in electrical communication with a second electrical connector, wherein the first electrical connector and the second electrical connector are connectable to an electrical receptacle of a light fixture through the end caps, wherein an inner space of the heat-dissipating tubular envelope includes ambient atmosphere, wherein the LED array emits light chosen from the group consisting of white light, pink light, blue light, yellow light, green light, red light, orange light, infrared light, and ultraviolet light, wherein the heat-dissipating tubular envelope has a diameter chosen from the group consisting of ¼

″

, ½

″

, ⅝

″

, 1″

, and 1½

″

, and a length chosen from the group consisting of 6″

, 9″

, 12″

, 18″

, 48″

, and 96″ and

further including a protective film operatively attached to the heat-dissipating tubular envelope.

13. The method of claim 12, wherein the adhesive layer is a material chosen from the group consisting of epoxy resin, silicone adhesive, and double-sided adhesive tape.

14. A method of providing heat-dissipation without a heat sink in an LED lighting tube, including the steps of:

providing a heat-dissipating tubular envelope;

affixing a surface of a base of an LED assembly directly to an inner surface of the heat-dissipating tubular envelope with an adhesive layer consisting of a non-insulating adhesive that extends an entire length of the LED assembly, wherein the LED assembly includes an LED board having an LED array attached to an upper surface opposite of the base portion, wherein open ends of the heat-dissipating tubular envelope are closed by end caps, the LED board including a first end in electrical communication with a first electrical connector and a second end in electrical communication with a second electrical connector, wherein the first electrical connector and the second electrical connector are connectable to an electrical receptacle of a light fixture through the end caps, wherein an inner space of the heat-dissipating tubular envelope includes ambient atmosphere, wherein the LED array emits light chosen from the group consisting of white light, pink light, blue light, yellow light, green light, red light, orange light, infrared light, and ultraviolet light, wherein the heat-dissipating tubular envelope has a diameter chosen from the group consisting of ¼

″

, ½

″

, ⅝

″

, 1″

, and 1½

″

, and a length chosen from the group consisting of 6″

, 9″

, 12″

, 18″

, 48″

, and 96″

, and further including a protective film operatively attached to the heat-dissipating tubular envelope; and

dissipating heat through the heat-dissipating tubular envelope.