CN211716293U - Lamp holder and lamp - Google Patents

Lamp holder and lamp Download PDF

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Publication number
CN211716293U
CN211716293U CN202020099185.7U CN202020099185U CN211716293U CN 211716293 U CN211716293 U CN 211716293U CN 202020099185 U CN202020099185 U CN 202020099185U CN 211716293 U CN211716293 U CN 211716293U
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China
Prior art keywords
pin
needle
lamp
pcb
hole
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Active
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CN202020099185.7U
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Chinese (zh)
Inventor
李国超
鲍永均
陈国彬
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Zhangzhou Lidaxin Optoelectronic Technology Co ltd
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Zhangzhou Lidaxin Optoelectronic Technology Co ltd
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Application filed by Zhangzhou Lidaxin Optoelectronic Technology Co ltd filed Critical Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority to CN202020099185.7U priority Critical patent/CN211716293U/en
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Publication of CN211716293U publication Critical patent/CN211716293U/en
Priority to EP21151559.8A priority patent/EP3852208A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/272—Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/278—Arrangement or mounting of circuit elements integrated in the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/015—Devices for covering joints between adjacent lighting devices; End coverings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/006—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate being distinct from the light source holder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The utility model belongs to the technical field of the illumination, especially, relate to a fluorescent tube lamp holder and fluorescent tube, wherein, the fluorescent tube lamp holder includes: the shell is made of insulating materials and is provided with an accommodating cavity with an open cavity structure and two needle jacks for communicating the accommodating cavity to the outside; the two outer conductive pins are of cylindrical structures and are respectively inserted into one pin insertion hole; the PCB is arranged in the accommodating cavity; and the two inner conductive pins are electrically connected to the PCB, and are respectively inserted into one outer conductive pin through one pin jack. Compared with the prior art, a plurality of connectors do not need to be prepared to be electrically connected with the outer conductive pins, so that the types of materials needing to be prepared are reduced, and the material cost and the material management and control cost are reduced.

Description

Lamp holder and lamp
Technical Field
The utility model belongs to the technical field of the illumination, especially, relate to a fluorescent tube lamp holder and fluorescent tube.
Background
Two copper needles are respectively arranged at two ends of a lamp holder of a lamp tube and connected with input electricity, the copper needles of partial lamp tubes are of a hollow structure, the electrical connection between a cylinder needle and an electrical part in the lamp tube is usually realized by adopting a connector, the connector comprises a connecting seat made of insulating materials and two connecting terminals which are both arranged on the connecting seat and are made of conductive materials, and based on the structure, in the assembling process, firstly, the two connecting terminals are respectively inserted into one copper needle, and secondly, the copper needles are riveted outside the copper needles so as to enable the copper needles to be contacted with the connecting terminals together to realize the electrical connection, the electrical connection mode is convenient to assemble, but in the lamp tubes with different specifications, the distance between the two connecting terminals is different, so that the connector needs to be respectively customized for the lamp tubes with different specifications, one connector can not deal with the lamp tubes with various specifications, and various connectors need to be customized to meet the production requirements, like this, when producing multiple different specification fluorescent tubes, need prepare multiple connector and come to realize the electricity with the copper needle and be connected, lead to the material type that needs prepare more, increased material cost and material management and control cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a fluorescent tube lamp holder, it aims at solving when producing multiple different specification fluorescent tubes, need prepare multiple connector come to realize the electricity with the copper needle and be connected, and the material type that leads to needing to prepare is more, has increased material cost and material management and control cost.
The utility model discloses a realize like this:
a lamp cap, comprising:
the shell is made of insulating materials and is provided with an accommodating cavity with an open cavity structure and two needle jacks for communicating the accommodating cavity to the outside;
the two outer conductive pins are of cylindrical structures and are respectively inserted into one pin insertion hole;
the PCB is arranged in the accommodating cavity;
and the two inner conductive pins are electrically connected to the PCB, and are respectively inserted into one outer conductive pin through one pin jack.
Optionally, the opening direction of the two needle insertion holes is parallel to the opening direction of the accommodating cavity.
Optionally, the housing is barrel-shaped.
Optionally, two pin insertion holes are formed in one surface of the PCB, and the two pin insertion holes are respectively used for inserting and matching one inner conductive pin;
the inner conductive needle comprises a power connection rod and an insertion rod which are connected with each other and are arranged in a rod shape, the extension direction of the power connection rod is parallel to the opening direction of the needle jack and is inserted into the outer conductive needle, and the extension direction of the insertion rod is parallel to the opening direction of the needle jack and is inserted into the needle jack.
Optionally, the needle jack includes a first needle hole and a second needle hole sequentially arranged in a direction away from the accommodating cavity, and an aperture of the first needle hole is smaller than an aperture of the second needle hole;
the outer conductive needle comprises an outer needle cylinder and a positioning ring which is sleeved on the outer needle cylinder and is integrally arranged with the outer needle cylinder, the outer diameter of the outer needle cylinder is smaller than or equal to the aperture of the first needle hole, and the outer diameter of the positioning ring is larger than the aperture of the first needle hole and smaller than or equal to the aperture of the second needle hole.
Optionally, the PCB board is integrated with a driving circuit.
Optionally, the outer conductive pin is made of copper material.
Optionally, the inner conductive pin is made of steel.
The utility model provides a lamp tube, include the cast lamp shade, arrange in light source board in the cast lamp shade and with light source board electricity is connected and as above the lamp tube lamp holder.
Optionally, the lamp tube further comprises a heat dissipation strip, and the heat dissipation strip is located in the tube-shaped lamp shade and used for installing the light source plate.
When the lamp holder of the lamp tube is assembled, firstly, the two inner conductive pins are electrically connected to the PCB, and the two outer conductive pins are respectively inserted into the pin insertion holes, secondly, the two inner conductive pins and the PCB are placed into the accommodating cavity together, and the two inner conductive pins are respectively inserted into the outer conductive pins through the pin insertion holes, and finally, the two outer conductive pins are riveted, so that the outer conductive pins and the inner conductive pins are fixedly connected on a mechanical structure.
Based on this structural design, when the multiple different specification fluorescent tubes of production, only need the interior conductive pin of customization same type, at specific assembling process, interior conductive pin assemble to the PCB board that corresponds can, for prior art, need not prepare multiple connector and realize the electricity with outer conductive pin and be connected to reduce the material type that needs the preparation, thereby reduce material cost and material management and control cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a lamp cap according to an embodiment of the present invention;
fig. 2 is an exploded perspective view of a lamp cap according to an embodiment of the present invention;
fig. 3 is a perspective cross-sectional view of a lamp cap of a lamp tube provided in an embodiment of the present invention;
fig. 4 is a schematic view of an overall structure of a lamp tube according to an embodiment of the present invention;
fig. 5 is an exploded view of a lamp according to an embodiment of the present invention.
The reference numbers illustrate:
Figure DEST_PATH_GDA0002587840970000031
Figure DEST_PATH_GDA0002587840970000041
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The embodiment of the utility model provides a fluorescent tube lamp holder is applicable to the fluorescent tube.
Referring to fig. 1 to 3, the lamp head includes:
a housing 100 made of an insulating material and having an accommodating chamber 101 with an open chamber structure and two pin holes 102 connecting the accommodating chamber 101 to the outside;
the two outer conductive pins 200 are both of a cylindrical structure and are respectively inserted into the pin insertion holes 102;
the PCB 300 is arranged in the accommodating cavity 101;
the two inner conductive pins 400 are electrically connected to the PCB 300, and the two inner conductive pins 400 are respectively inserted into an outer conductive pin 200 through a pin insertion hole 102.
When the lamp head of the lamp tube is assembled, firstly, the two inner conductive pins 400 are electrically connected to the PCB 300, and the two outer conductive pins 200 are respectively inserted into the pin insertion holes 102, secondly, the two inner conductive pins 400 and the PCB 300 are placed into the accommodating cavity 101 together, and the two inner conductive pins 400 are respectively inserted into one outer conductive pin 200 through the pin insertion holes 102, and finally, the two outer conductive pins 200 are riveted, so that the outer conductive pins 200 and the inner conductive pins 400 are fixedly connected in a mechanical structure.
Based on the structural design, when producing multiple different specification fluorescent tubes, only need the interior conductive pin 400 of customization same type, in concrete assembling process, interior conductive pin 400 assemble to the PCB board 300 that corresponds can, for prior art, need not prepare multiple connector and realize the electricity with outer conductive pin 200 and be connected to reduce the material type that needs the preparation, thereby reduce material cost and material management and control cost.
In the embodiment of the present invention, the outer conductive pin 200 is made of a copper material. Firstly, the copper material has high electric conductivity, so, when being connected with external power supply equipment electrically, can guarantee the electric efficiency that connects of lamp holder better, and secondly, the copper material still has better processing property, is convenient for production manufacturing.
In the embodiment of the present invention, the inner conductive pin 400 is made of steel. The steel has a good mechanical strength, so that, firstly, the inner conductive pin 400 is not easily deformed and bent in the process of inserting the inner conductive pin 400 into the outer conductive pin 200, and secondly, the outer conductive pin 200 is not easily bent when the outer conductive pin 200 is electrically connected with an external power supply device.
Referring to fig. 2 and 3, in the embodiment of the present invention, the opening direction of the two pin insertion holes 102 is parallel to the opening direction of the accommodating cavity 101. In the process of putting the two inner conductive pins 400 and the PCB 300 into the accommodating cavity 101 together, the two inner conductive pins 400 and the PCB 300 can be reversely put into the accommodating cavity 101 along the opening direction of the accommodating cavity 101, and in the process of putting into the accommodating cavity, the two inner conductive pins 400 can be respectively inserted into one outer conductive pin 200 through one pin insertion hole 102, so that the assembly efficiency of the lamp cap is improved based on the structural design.
In an embodiment, the housing 100 is a barrel structure.
Referring to fig. 2 and 3, in the embodiment of the present invention, two pin insertion holes 102 are formed on a surface of the PCB 300, and the two pin insertion holes 102 are respectively used for inserting and matching an inner conductive pin 400; the inner conductive pin 400 includes an electric connection rod 410 and an insertion rod 420 which are connected with each other and are arranged in a rod shape, the extending direction of the electric connection rod 410 is parallel to the opening direction of the pin jack 102 and is inserted into an outer conductive pin 200, and the extending direction of the insertion rod 420 is parallel to the opening direction of the pin jack 102 and is inserted into the pin jack 102.
Based on the structural design, in the process of putting the two inner conductive pins 400 and the PCB 300 into the accommodating cavity 101 together, because the two inner conductive pins are inserted into the pin jack 102, and the extending direction of the insertion rod 420 is parallel to the opening direction of the pin jack 102, the PCB 300 inserts the electrical rod 410 into the outer conductive pin 200 by pushing the insertion rod 420 between the hole walls of the pin jack 102, in this process, the electrical connection relationship between the inner conductive pins 400 and the PCB 300 is not affected, and the inner conductive pins 400 are prevented from being loosened from the PCB 300.
Referring to fig. 2 and 3, in the embodiment of the present invention, the needle insertion hole 102 includes a first needle hole and a second needle hole sequentially arranged along a direction away from the accommodating cavity 101, and an aperture of the first needle hole is smaller than an aperture of the second needle hole; the outer conductive needle 200 includes an outer needle cylinder 210 and a positioning ring 220 sleeved on the outer needle cylinder 210 and integrally disposed with the outer needle cylinder 210, wherein the outer diameter of the outer needle cylinder 210 is smaller than or equal to the aperture of the first needle hole, and the outer diameter of the positioning ring 220 is larger than the aperture of the first needle hole and smaller than or equal to the aperture of the second needle hole.
Based on this structural design, in the in-process of pegging graft respectively in a pinhole jack 102 with two outer conductive pins 200, through the location of holding ring 220, can be fast with outer conductive pin 200 peg graft cooperation to the pinhole jack 102 in, so, improved the assembly efficiency that outer conductive pin 200 assembled shell 100, so, improved the assembly efficiency of fluorescent tube lamp holder.
Specifically, the outer diameter of the outer cylinder 210 is equal to the diameter of the first needle hole, and the outer diameter of the positioning ring 220 is equal to the diameter of the second needle hole.
In the embodiment of the present invention, the PCB 300 is integrated with a driving circuit, and the driving circuit is used for driving the light source board in the light tube.
Referring to fig. 4 and 5, the present invention further provides a lamp including a tubular lamp cover 500, a light source plate 600 disposed in the tubular lamp cover 500, and a lamp cap electrically connected to the light source plate 600.
When the lamp head of the lamp tube is assembled, firstly, the two inner conductive pins 400 are electrically connected to the PCB 300, and the two outer conductive pins 200 are respectively inserted into the pin insertion holes 102, secondly, the two inner conductive pins 400 and the PCB 300 are placed into the accommodating cavity 101 together, and the two inner conductive pins 400 are respectively inserted into one outer conductive pin 200 through the pin insertion holes 102, and finally, the two outer conductive pins 200 are riveted, so that the outer conductive pins 200 and the inner conductive pins 400 are fixedly connected in a mechanical structure.
Based on the structural design, when producing multiple different specification fluorescent tubes, only need the interior conductive pin 400 of customization same type, in concrete assembling process, interior conductive pin 400 assemble to the PCB board 300 that corresponds can, for prior art, need not prepare multiple connector and realize the electricity with outer conductive pin 200 and be connected to reduce the material type that needs the preparation, thereby reduce material cost and material management and control cost.
Referring to fig. 5, in the embodiment of the present invention, the lamp tube further includes a heat dissipation strip 700, and the heat dissipation strip 700 is located in the tubular lampshade 500 and is used for installing the light source plate 600. The heat dissipation member directly contacts the light source board 600, and heat generated from the light source board 600 may be directly transferred to the heat dissipation member.
Specifically, the heat sink is made of an aluminum material.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A lamp cap, comprising:
the shell is made of insulating materials and is provided with an accommodating cavity with an open cavity structure and two needle jacks for communicating the accommodating cavity to the outside;
the two outer conductive pins are of cylindrical structures and are respectively inserted into one pin insertion hole;
the PCB is arranged in the accommodating cavity;
and the two inner conductive pins are electrically connected to the PCB, and are respectively inserted into one outer conductive pin through one pin jack.
2. A lamp cap as claimed in claim 1, wherein the opening direction of the two pin insertion holes is parallel to the opening direction of the accommodating chamber.
3. A tube cap as claimed in claim 2, characterized in that the outer envelope is of barrel-shaped construction.
4. A lamp cap of claim 2, wherein said PCB has two pin holes on one surface, and said two pin holes are respectively for inserting and mating with said inner conductive pin;
the inner conductive needle comprises a power connection rod and an insertion rod which are connected with each other and are arranged in a rod shape, the extension direction of the power connection rod is parallel to the opening direction of the needle jack and is inserted into the outer conductive needle, and the extension direction of the insertion rod is parallel to the opening direction of the needle jack and is inserted into the needle jack.
5. A lamp cap according to claim 1, wherein said pin insertion hole comprises a first pin hole and a second pin hole sequentially arranged in a direction away from said receiving cavity, and an aperture of said first pin hole is smaller than an aperture of said second pin hole;
the outer conductive needle comprises an outer needle cylinder and a positioning ring which is sleeved on the outer needle cylinder and is integrally arranged with the outer needle cylinder, the outer diameter of the outer needle cylinder is smaller than or equal to the aperture of the first needle hole, and the outer diameter of the positioning ring is larger than the aperture of the first needle hole and smaller than or equal to the aperture of the second needle hole.
6. A lamp cap according to any of claims 1 to 5, wherein the PCB board is integrated with a driving circuit.
7. A lamp vessel cap as claimed in any one of claims 1 to 5, characterized in that said outer conductive pin is made of copper.
8. A lamp vessel cap as claimed in any one of claims 1 to 5, characterized in that said inner conductor pin is made of steel.
9. A lamp comprising a tubular lamp housing, a light source board disposed inside said tubular lamp housing, and a lamp cap electrically connected to said light source board and according to any one of claims 1 to 8.
10. The lamp of claim 9, further comprising a heat sink strip positioned within said tubular housing and adapted to mount said light source board.
CN202020099185.7U 2020-01-16 2020-01-16 Lamp holder and lamp Active CN211716293U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202020099185.7U CN211716293U (en) 2020-01-16 2020-01-16 Lamp holder and lamp
EP21151559.8A EP3852208A1 (en) 2020-01-16 2021-01-14 Lamp tube holder and lamp tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020099185.7U CN211716293U (en) 2020-01-16 2020-01-16 Lamp holder and lamp

Publications (1)

Publication Number Publication Date
CN211716293U true CN211716293U (en) 2020-10-20

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CN (1) CN211716293U (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7621782B1 (en) * 2008-11-04 2009-11-24 Everlight Electronics Co., Ltd. Connector and light source apparatus
KR200447930Y1 (en) * 2009-05-07 2010-03-03 주식회사 삼원엘앤디 Led light of fluorescent lamp shape
JP2011165528A (en) * 2010-02-11 2011-08-25 Smk Corp Led lighting device
KR101347256B1 (en) * 2012-05-08 2014-01-06 루미리치 주식회사 LED lighting apparatus
CN104595765A (en) * 2015-01-13 2015-05-06 无锡天地合同能源管理有限公司 LED (light-emitting diode) lamp tube

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