TWM452292U - LED vertical lamp - Google Patents

Description

LED straight tube light

The invention relates to a lamp tube, in particular to an LED straight tube lamp using an LED as a light source.

Referring to FIG. 1 and FIG. 2, a conventional LED straight tube lamp 1 comprises a lamp housing 11 made of a heat conductive metal material such as aluminum alloy, a light-emitting plastic material and a cover over the lamp housing 11. The lampshade 12, a light-emitting unit 13 mounted on the lamp housing 11, and a power module 14 located outside the lamp housing 11. The lamp housing 11 has a circular arc wall portion 111 having a circular arc shape and an opening upward, and a horizontal wall portion 112 connected to the top side opening of the circular arc wall portion 111, and the two are respectively A rail portion 113 projecting upward from both sides of the horizontal wall portion 112. The light-emitting unit 13 has a circuit board 131 embedded between the rail portions 113 and thermally conductively disposed on the horizontal wall portion 112, and a plurality of circuit boards 131 that are spaced apart from each other and electrically connected to the circuit board 131. Light emitting member 132. The circuit board 131 has a layer of insulating and thermally conductive film 133 coated on the surface of the entire board for blocking current conduction to the lamp housing 11. The power module 14 is electrically connected to the circuit board 131 and used to drive the light-emitting members 132.

In use, the power module 14 provides the DC voltage of the light-emitting unit 13 so that the light of the light-emitting elements 132 is emitted outwardly through the light cover 12, and the heat generated by the light-emitting elements 132 is thermally conducted to the lamp housing 11. And then dissipate outward into the air. However, since the power module 14 is not mounted in the lamp housing 11, it must be placed externally, so assembly is inconvenient.

Referring to FIG. 3 and FIG. 4, another conventional LED straight tube lamp 2 has the same structure as the LED straight tube lamp 1 shown in FIG. 1 and FIG. 2, and also includes a metal lamp shell 21 and a plastic tube. A lampshade 22, a light emitting unit 23, and a power module 24. The light-emitting unit 23 also has a circuit board 231 and a plurality of light-emitting members 232. The circuit board 231 also has a layer of insulating thermally conductive film 233 coated on the surface. The difference between the two parts is that the power module 24 of the LED straight tube lamp 2 is installed in the lamp housing 21, and is connected to the circuit board 231 of the light-emitting unit 23 by a power line (not shown), and can be directly connected to the mains. . Since the LED straight tube lamp 2 is built into the lamp housing 21, it is convenient to assemble.

However, the above two kinds of LED straight tube lamps 1, 2 are made of metal lamp shells 11, 21 for receiving the circuit boards 131, 231 of the light-emitting units 13, 23, although they can pass through the respective insulating and thermally conductive film layers 133. 233 to achieve the effect of insulation and heat conduction, but after long-term use, the insulation material of the above-mentioned insulating and thermally conductive film layers 133, 233 will gradually deteriorate, and if used in a relatively humid environment, it is easy to have current flowing to the said The lamp housings 11, 21, in turn, are in danger of electric shock.

Therefore, the purpose of the present invention is to provide an LED straight tube lamp that is safe to use.

Thus, the novel LED straight tube lamp comprises an insulated lamp tube, a conductive heat dissipating unit, an illumination unit, and a power module.

The insulated lamp tube is made of a light transmissive and non-conductive material, and includes a tube wall wound into a hollow tubular shape, and two rails respectively disposed axially on the tube wall The strip has an inner wall surface defining an accommodation space, and the rails are formed on opposite sides of the inner wall surface in a relatively spaced manner.

The conductive heat dissipating unit comprises a circuit board extending along the length of the insulating lamp tube and detachably embedded between the rails, and a plurality of conductive sheets and a plurality of pieces respectively disposed on the circuit board spaced apart from each other The thermal conductive sheet, each of the thermal conductive sheets is correspondingly located between every two adjacent conductive sheets.

The illuminating unit comprises a plurality of illuminating members mounted on the circuit board at intervals, each illuminating member being thermally conductively mounted on each of the heat conducting sheets, and electrically connecting two corresponding phases of the conductive sheets respectively Adjacent conductive sheet.

The power module is electrically connected to the circuit board and includes at least one drive electronic component.

The foregoing and other technical aspects, features and advantages of the present invention will be apparent from the following description of the preferred embodiments.

Referring to FIG. 5, FIG. 6 and FIG. 7, a preferred embodiment of the LED straight tube lamp comprises an insulated lamp tube 3, a conductive heat dissipating unit 4, an illumination unit 5, a power module 6, and a conductive Unit 7.

The insulating tube 3 is made of a non-metallic material that is transparent and non-conductive, such as a plastic material such as Poly-Carbonate (PC), and includes a tube wall 31 that is wound around a tubular strip, and two axially disposed ones. The rail 32 of the tube wall 31. The tube wall 31 of the embodiment has a hollow cross section and has an inner wall surface 312 defining a receiving space 311. The conductive heat dissipation unit 4, the light emitting unit 5, and the power module 6 can be accommodated in the 311. Of course, the tube wall 31 can also have other shapes, such as a hollow ellipse, a fan shape, a square shape, etc., as long as the tube wall 31 is formed into a full-circular closed shape and the surface does not contain any exposed metal, so the present embodiment is not implemented. The example is limited. The inner wall surface 312 has a first surface portion 313 and a second surface portion 314 that extend axially and are connected to each other. The first surface 313 has a plurality of ridges 315, which can be used to atomize the surface, blur the line of sight, and avoid direct reflection from the outside to the inside. Of course, the shape of the ribs 315 can also be changed or omitted. The second surface portion 314 is a smooth surface. Of course, a plurality of convex particles (not shown) for diffusing light may be provided, or diffusion particles (not shown) may be added to the tube wall 31. The area ratio of the first face 313 to the second face 314 may be 1:1, or may be 1:3 or 2:3 or other ratios. The rails 32 are spaced apart and are formed on both sides of the inner wall surface 312, and are located between the first surface 313 and the second surface 314. Each of the rails 32 has an axial extension and A recess 321 that opens toward the other rail 32.

The conductive heat dissipating unit 4 includes a circuit board 41 extending along the insulating lamp tube 3 and detachably embedded between the slots 321 of the rails 32, and spaced apart from each other on the circuit board. A plurality of conductive sheets 42 and a plurality of heat conductive sheets 43 of 41. The circuit board 41 has an opposite first surface 411 and a second surface 412. The first surface 411 faces the first face 313 of the tube wall 31, and the second surface 412 faces the second face 314 of the tube wall 31. The circuit board 41 of the present embodiment is a single-sided circuit board 41. Of course, the double-sided circuit board 41 can also be used. Further, the circuit board 41 has its He connects the circuit design such as wires, and since its circuit design is not the focus of this new model, it will not be described in detail. The conductive sheets 42 are spaced apart from each other along the length of the circuit board 41 on the first surface 411. The heat conducting sheets 43 are disposed on the second surface 412 spaced apart from each other along the length of the circuit board 41. Each of the heat conducting sheets 43 is disposed between each two adjacent conductive sheets 42. The equal heat conductive sheets 43 may also extend from the second surface 412 to the first surface 411, respectively, to increase the heat dissipation area. The conductive sheets 42 and the heat conductive sheets 43 of the embodiment are all made of copper foil, and the material thereof is not limited thereto.

The lighting unit 5 includes a plurality of illuminating members 51 that are electrically connected to the circuit board 41, respectively. The illuminating members 51 are light-emitting diodes (LEDs), which have the advantages of high brightness, energy saving, and power saving. Each of the illuminating members 51 is thermally conductively mounted on each of the heat conducting sheets 43 and electrically connected thereto. Two of the conductive sheets 42 correspond to the adjacent conductive sheets 42, so that each of the light-emitting members 51 has a lamp body portion 511 that abuts against the respective heat-conducting sheets 43, and two groups respectively pass through the circuit board. 41 and electrically connected to the lead portions 512 of the respective conductive sheets 42. Each set of lead legs 512 has at least one conductive terminal 513.

The power module 6 is electrically connected to the circuit board 41 and includes a plurality of driving electronic components 61 respectively electrically connected to the two ends of the circuit board 41 and correspondingly disposed on the respective thermal conductive sheets 43. . Of course, the power module 6 can also be disposed only at one end of the circuit board 41, so the installation position is not limited to the embodiment. Furthermore, the power module 6 of the embodiment is mounted on the second surface 412 of the circuit board 41, that is, The illuminating member 51 is located on the same surface. However, if the circuit board 41 is a double-sided circuit board 41, the power module 6 may be mounted on different surfaces from the illuminating members 51, respectively.

The conductive unit 7 includes two ends 71 (only one shown in the figure) which are respectively sleeved at both ends of the insulating tube 3. At least one of the terminals 71 of the terminals 71 is electrically connected to the power module 6 and has two sets of conductive plugs 711 for inserting into a socket (not shown) for external power supply (for example, utility power) It is transmitted to the power module 6 for providing the power of the illuminating members 51, but it is a general design, so it will not be described in detail.

In use, the light of the illuminating members 51 can be emitted outward through the second surface 314 of the tube wall 31 of the insulating tube 3 to achieve an illumination effect, and the illuminating member 51 and the driving electronic components 61 are generated. The heat energy is also transmitted through the heat conducting sheets 43 to improve the heat dissipation performance.

In summary, the LED straight tube lamp of the present invention is that the light-emitting unit 5 and the power module 6 are mounted together on the conductive heat-dissipating unit 4, and share the same circuit board 41, so that the components can be combined and reduced to occupy a space. It is assembled and the circuit board 41 can be connected to the mains AC input power. In addition, the LED straight tube lamp of the present invention further comprises an insulating and insulating tube 3 for insulating the conductive heat dissipating unit 4, the light emitting unit 5 and the power module 6, so that there is no danger of electric shock and electric shock. Safety. Moreover, the conductive heat dissipating unit 4 is further provided with the heat conducting sheet 43 at the mounting position of the light emitting unit 5 and the power module 6, so that the heat dissipation effect can also be achieved, so the object of the present invention can be achieved.

However, the above is only the preferred embodiment of the present invention, when not It is possible to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the present invention in accordance with the scope of the novel application and the novel description are still within the scope of the present patent.

3‧‧‧Insulated tube

31‧‧‧ wall

311‧‧‧ accommodating space

312‧‧‧ inner wall

313‧‧‧First face

314‧‧‧ second face

315‧‧‧ embossing

32‧‧‧Roads

321‧‧‧ slotted

4‧‧‧Electrical heat dissipation unit

41‧‧‧ boards

411‧‧‧ first surface

412‧‧‧ second surface

42‧‧‧Conductor

43‧‧‧ Thermal sheet

5‧‧‧Lighting unit

51‧‧‧Lighting parts

511‧‧‧Light body

512‧‧‧Leading

513‧‧‧Electrical terminals

6‧‧‧Power Module

61‧‧‧Drive electronic components

7‧‧‧Conducting unit

71‧‧‧End

711‧‧‧conductive plunger

1 is a partially exploded perspective view of a conventional LED straight tube lamp; FIG. 2 is a partial cross-sectional view of the LED straight tube lamp of FIG. 1; FIG. 3 is a partially exploded perspective view of another conventional LED straight tube lamp; 4 is a schematic cross-sectional view of a portion of the LED straight tube lamp of FIG. 3; FIG. 5 is a partially exploded perspective view of a preferred embodiment of the LED straight tube lamp; FIG. 6 is a partial plan view of the preferred embodiment. A partial configuration of an illumination unit and a power module mounted on a conductive heat dissipation unit; and FIG. 7 is a partial cross-sectional view of the preferred embodiment.

3‧‧‧Insulated tube

31‧‧‧ wall

311‧‧‧ accommodating space

312‧‧‧ inner wall

313‧‧‧First face

314‧‧‧ second face

315‧‧‧ embossing

32‧‧‧Roads

321‧‧‧ slotted

4‧‧‧Electrical heat dissipation unit

41‧‧‧ boards

411‧‧‧ first surface

412‧‧‧ second surface

42‧‧‧Conductor

43‧‧‧ Thermal sheet

5‧‧‧Lighting unit

51‧‧‧Lighting parts

511‧‧‧Light body

512‧‧‧Leading

513‧‧‧Electrical terminals

6‧‧‧Power Module

61‧‧‧Drive electronic components

7‧‧‧Conducting unit

71‧‧‧End

711‧‧‧conductive plunger

Claims (4)

An LED straight tube lamp comprising: an insulated lamp tube made of a light transmissive and non-conductive material, and comprising a tube wall wound into a hollow tube, and two rails respectively disposed axially on the tube wall a pipe wall having an inner wall surface defining an accommodation space, the rails being formed on opposite sides of the inner wall surface at a relatively spaced relationship; a conductive heat dissipation unit including a piece along the longitudinal direction of the insulated lamp tube An extended and detachably embedded circuit board between the rails, and a plurality of conductive sheets and a plurality of thermal conductive sheets respectively disposed on the circuit board spaced apart from each other, each of the thermal conductive sheets being correspondingly located adjacent to each other Between the conductive sheets; a light-emitting unit comprising a plurality of light-emitting members mounted on the circuit board at intervals, each of the light-emitting members being thermally conductively mounted on the respective heat-conducting sheets and electrically connecting the conductive sheets Two of the corresponding conductive sheets are adjacent to each other; and a power module is electrically connected to the circuit board and includes at least one driving electronic component. The LED straight tube lamp of claim 1, wherein the power module comprises a plurality of driving electronic components respectively electrically connected at both ends of the circuit board. The LED straight tube lamp of claim 1, wherein the circuit board has an opposite first surface and a second surface, and the conductive sheets are spaced apart from each other along the length of the circuit board. On one surface, the thermally conductive sheets are disposed on the second surface spaced apart from each other along the length of the circuit board. The LED straight tube lamp of claim 1 or 3, wherein each of the illuminating members has a lamp body portion that is in contact with each of the heat conducting sheets, and two groups. The circuit board is respectively passed through and electrically connected to the lead portions of the respective conductive sheets.