# US 2013/0155646 A1 · Led tubular lamp

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- Number: US 2013/0155646 A1
- Document ID: US20130155646A1
- Status: Published application
- Kind: A1
- Application number: 13/500,669
- Filed: 2011-12-21
- Published: 2013-06-20
- Earliest claimed: 2011-12-15
- Assignees: Ningbo Baishi Electric Co., Ltd.
- Inventors: Liqiang Zhang
- Web page: https://patentgrep.com/patent/US20130155646A1

## CPC

- F21K 9/27: Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
- F21K 9/275: Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings (F21K9/278 takes precedence)
- F21V 3/08: the material comprising photoluminescent substances
- F21V 7/24: characterised by the material
- F21V 15/015: Devices for covering joints between adjacent lighting devices; End coverings
- F21V 29/56: using liquid coolants (F21V29/51 takes precedence)
- F21V 29/67: characterised by the arrangement of fans
- F21V 29/673: {the fans being used for intake}
- F21Y 2103/10: comprising a linear array of point-like light-generating elements
- F21Y 2107/30: on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
- F21Y 2115/10: Light-emitting diodes [LED]
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A LED tubular lamp has a luminous tube, a center column, a plurality of LED chips, fixtures, connective plates and lamp heads; a plurality of grooves are provided on the center column, materials having high reflectivity are provided on the grooves, the plurality of LED chips are arranged on the grooves so as to form a light source with 360-degree light irradiation, the center column is provided in the luminous tube and fixedly connected to lamp heads via the fixtures and the connective plates. The LED tubular lamp can emit light at an angle of 360 degrees, thereby increasing the range of the irradiation of the luminous tube, making light more even and the problem of glaring being solved.

## Claims

### Claim 1

A LED tubular lamp, wherein, comprises a luminous tube, a center column, a plurality of LED chips, fixtures, connective plates and lamp heads; a plurality of grooves are provided on the center column, materials having high reflectivity are provided on the grooves, the plurality of LED chips are arranged on the grooves so as to form a light source with 360-degree light irradiation, the center column is provided in the luminous tube and fixedly connected to lamp heads via the fixtures and the connective plates.

### Claim 2 (depends on 1)

The LED tubular lamp according to claim 1, wherein, fasteners for connecting with fixtures and connective plates are provided on both ends of the center column; the center column has 6 grooves regularly arranged thereon, and a plurality of LED chips are arranged on each of the grooves to form the light source with 360-degree light irradiation.

### Claim 3 (depends on 1)

The LED tubular lamp according to claim 1, wherein, materials having high reflectivity are provided on the grooves, the highly reflective materials being an optically reflective PC, a reflective pasted film or a vacuum UV plated film.

### Claim 4 (depends on 1)

The LED tubular lamp according to claim 1, wherein, fans for heat dispersion are provided on the lamp heads.

### Claim 5 (depends on 1)

The LED tubular lamp according to claim 1, wherein, hollow channel in which liquid for heat dispersion is contained is provided in the center column.

### Claim 6 (depends on 1)

The LED tubular lamp according to claim 1, wherein, low power LEDs that are attached to the center column 3 or COB packaged LEDs is employed as LED chips.

### Claim 7 (depends on 1)

The LED tubular lamp according to claim 1, wherein, the LED chips are directly fixed to a silver plated aluminium tube.

### Claim 8 (depends on 1)

The LED tubular lamp according to claim 1, wherein, the plurality of LED chips are white light LEDs or blue light LEDs.

### Claim 9 (depends on 1)

The LED tubular lamp according to claim 1, wherein, the luminous tube is a PC diffusive cover or a luminous tube formed by mixing fluorescent powder and PC.