TW201428206A - LED lamp tube - Google Patents

Abstract

The disclosure provides a lamp tube comprising a hollow tube, a light-emitting module and two end-caps. The light-emitting module is positioned in the hollow tube, and includes a circuit board and a plurality of light-emitting elements. Both two ends of the circuit board include a first and a second connecting electrodes. The two end-caps are sleeve-connected at the two ends of the hollow tube. Each end-cap both comprises a pair of a first and a second exposed electrical terminals electrically connected to an external power supply. A pair of a first and a second elastic conductors are positioned at the inside of each end-cap, and electrically connected to the first and the second exposed electrical terminals respectively. When the two end-caps respectively sleeve-connected to the two ends of the hollow tube, the first and the second elastic conductors are electrically connected to the first and the second connecting electrodes respectively.

Description

Light-emitting diode tube

The invention relates to a lamp tube, in particular to a light-emitting diode lamp.

In today's society, the application of light emitting diodes is very common and convenient to use. Common applications include backlight modules, headlights and indicator lights. Compared with the traditional fluorescent tube, the LED lamp has the advantages of low driving voltage, long service life and low power consumption. Therefore, the application of the LED lamp has gradually replaced the traditional fluorescent tube.

In general, a light-emitting diode lamp has two end caps, and each end cap has a power receiving terminal therein. Most of the above-mentioned power terminals are electrically connected to the circuit board by soldering or pressing. When the ambient temperature changes drastically, the electrical connection between the power receiving terminal and the circuit board may be affected by the heat expansion and contraction. When used for a long time, the lamp will gradually bend, causing poor contact between the above-mentioned power receiving terminal and the circuit board. It may also reduce the reliability due to poor soldering quality. In addition, the components of the conventional light-emitting diode lamp are complicated, which makes the assembly process difficult, not only the assembly time is cumbersome, but also increases the manufacturing cost. Therefore, there is a need for an improved light-emitting diode lamp to solve the above-mentioned lack of conventional lamp.

The invention provides a lamp tube for solving the defect of the traditional lamp tube and achieving the purpose of simplifying the component composition.

One aspect of the present invention provides a lamp tube including a hollow lamp body, a light emitting module, and a two-end cover. The illuminating module is disposed in the hollow lamp body, and includes a circuit substrate and a plurality of illuminating members electrically connected to the circuit substrate. Both ends of the circuit substrate have a first and second polarity connection portions, and the first and second polarity connection portions are electrically connected to the circuit substrate. The two end caps are respectively sleeved at two ends of the hollow lamp body. Each end cover includes an exposed first and second polarity electrical terminals for electrically connecting to an external power source. And a pair of first and second elastic conductors disposed inside each end cap and electrically connected to the first and second polarity electrical terminals, respectively. When the two end caps are respectively sleeved on the two ends of the hollow lamp tube body, the first and second elastic conductors in each end cap are respectively electrically connected to the first and second polarity connecting portions located at the two ends of the circuit substrate .

According to an embodiment of the present invention, the first and second polarity connecting portions are vertically disposed on the circuit board.

According to an embodiment of the present invention, the electrical connection portion of the circuit board is a metal conductive member that is in contact with the power supply.

According to an embodiment of the invention, the first and second elastic guiding systems are vertically disposed on the surfaces of the first and second polar connecting portions.

According to an embodiment of the invention, the first and second elastic conductors are metal springs.

According to an embodiment of the present invention, the first polarity is a positive electrode and the second polarity is a negative electrode, or the first polarity is a negative electrode and the second polarity is a positive electrode.

According to an embodiment of the present invention, the two ends of the hollow lamp tube body respectively have a pair of parallel-shaped recesses, and the two end caps respectively have a pair of parallel-arranged groove rails, and the two end-end covers are respectively sleeved The hollow lamp body At the two ends, each of the pair of groove rails can be received in each of the pair of recesses, and the two ends of the circuit board are respectively inserted into the groove rails in the two end caps.

According to an embodiment of the present invention, the light emitting device is a light emitting diode.

According to an embodiment of the invention, the hollow lamp tube system is made of plastic or glass.

According to an embodiment of the present invention, the hollow lamp body has at least one recessed hole on the outer surface of the two ends, and each of the two end caps has at least one card point on the inner surface thereof, and the recessed hole and the card point are mutually Corresponding joints.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described to explain the gate stack structure of the present invention and a method of fabricating the same, but are not intended to limit the present invention. In the drawings or the description, similar or identical parts are given the same symbols or numbers. Further, the application of the present invention is not limited to the embodiments hereinafter, and those skilled in the art can be applied to the related art.

1 is a schematic exploded view of a lamp tube according to an embodiment of the present invention. Figure 2 is a side cross-sectional view showing a portion of the lamp of Figure 1. In FIGS. 1 and 2, the lamp tube 100 includes a hollow lamp body 110, a light-emitting module 120, and a two-end cover 130.

The light-emitting module 120 is housed in the hollow lamp body 110 and includes a circuit substrate 121 and a plurality of light-emitting members 122. The first and second polarity connecting portions 123 are provided at both ends of the circuit board 121 , and the first and second polarity connecting portions 123 are electrically connected to the circuit board 121 . Further, the light-emitting member 122 is electrically connected to the circuit board 121.

Referring to FIG. 2, the two end caps 130 are respectively sleeved on the two ends of the hollow lamp body 110, wherein each end cap 130 includes a first exposed first and second polarity terminal 131 and a pair of positions. The first and second elastic conductors 132 inside the end cover 130. In more detail, a portion of the first and second polarity electrical terminals 131 are exposed outside the end cover for electrically connecting to an external power source, and a portion is located inside the end cover for one of the first and second elastic conductors 132. The sides are electrically connected to each other.

When the two end covers 130 are respectively sleeved on the two ends of the hollow lamp body 110, the other side of the first and second elastic conductors 132 in each end cover 130 are respectively disposed at the two ends of the circuit substrate 121. 1. The second polarity connecting portion 123 is electrically connected.

According to an embodiment of the invention, the first and second polarity connecting portions 123 are perpendicular to the circuit substrate 121.

According to an embodiment of the invention, the first and second polarity connecting portions 123 are metal conductive members for power supply contact.

According to an embodiment of the invention, the first and second elastic conductors 132 are perpendicular to the surfaces of the first and second polarity connecting portions 123.

According to an embodiment of the invention, the first and second elastic conductors 132 are metal springs.

According to an embodiment of the invention, the first polarity is a positive electrode and the second polarity is a negative electrode. According to another embodiment of the invention, the first polarity is a negative electrode and the second polarity is a positive electrode.

According to an embodiment of the present invention, the two ends of the hollow bulb body 110 respectively have a pair of parallel-shaped recesses 111, and the two end caps 130 respectively have a pair of parallel-arranged groove rails 133. When the two end caps 130 are respectively sleeved at the two ends of the hollow lamp body 110, each pair of groove rails 133 can be accommodated in each pair. Concave portion 111. In addition, the two ends of the circuit board 121 are respectively inserted into the groove rails 133 in the two end caps 130.

According to an embodiment of the invention, the illuminating member 122 is a light emitting diode. According to another embodiment of the invention, the hollow bulb body 110 is made of plastic or glass.

In accordance with an embodiment of the present invention, the hollow bulb body 110 has at least one recess 112 on the outer surface adjacent the ends, and each end cap 130 has at least one tab 134 on its inner surface. Each of the recessed holes 112 and each of the latching points 134 are coupled to each other.

3A is a schematic cross-sectional view of an end cap according to an embodiment of the present invention. In FIG. 3A, the end cap 300a includes a pair of first and second polarity electrical terminals 311, a pair of first and second elastic conductors 312, a pair of parallel-shaped groove rails 313, and at least one card point 314. It should be noted that the first and second elastic conductors 312 are respectively disposed corresponding to the first and second polarity electrical terminals 311. 2, the first and second elastic conductors 132 are respectively sleeved on the first and second polarity electrical terminals 131.

Fig. 3B is a schematic cross-sectional view showing a portion of the tube of the section line A-A' of Fig. 2; In FIG. 3B, the lamp tube 300b includes an end cover 310, a light emitting module 320, and a hollow lamp body 330.

One of the end caps 310 is disposed in the recessed portion of the hollow lamp tube body 330, and the circuit board 321 of the light-emitting module 320 is inserted into the groove rail 313 of the end cover 310. The card point 314 of the end cap 310 is correspondingly engaged with the recessed hole of the hollow lamp body 330.

The first and second polarity connecting portions 323 of the light emitting module 320 are respectively connected to one of the first and second elastic conductors 312 of the end cover 310. As can be seen from Fig. 2, the first and second polarity connecting portions 123 are vertically connected to the upper portion. The first and second elastic conductors 132 are described. In addition, the light-emitting member 322 of the light-emitting module 312 is disposed on the circuit substrate 321 .

4 is a schematic view showing the combination of an end cap and a circuit substrate according to an embodiment of the present invention. In the fourth embodiment, the end cover 410 includes a pair of first and second elastic conductors 412, a pair of parallel groove tracks 413 and at least one card point 414, and the light emitting module 420 includes a circuit substrate 421, a light emitting member 422, and A pair of first and second polarity connecting portions 423. The first and second polarity connecting portions 423 of the light emitting module 420 respectively correspond to the first and second elastic conductors 412 of the end cover 410.

The lamp tube disclosed in the above embodiments of the present invention, in particular, the light-emitting diode lamp tube, uses an elastic conductor as a conductive member electrically contacting the polarity connection terminal of the end cover and the polarity connection portion of the light-emitting module. It can effectively solve the problem that the lamp tube is bent and the contact between the conventional electrical terminal and the circuit substrate is poor. It is worth noting that by using the elastic conductor as the electrical connection component, the soldering process can be avoided, thereby improving the reliability of the lamp.

According to an embodiment of the present invention, the elastic conductor can also solve the limitation imposed by the ambient temperature on the lamp. Since the conventional electrical terminals are mostly electrically connected to the circuit substrate by soldering or pressing, when the ambient temperature changes drastically, the electrical connection between the electrical terminal and the circuit substrate may be affected by the thermal expansion and contraction. According to the embodiment of the present invention, the elastic conductor is connected to the polarity electrical terminal and the circuit substrate, so that there is a large elastic space between the electrical terminal and the circuit substrate to prevent the ambient temperature from affecting the electrical conduction of the lamp.

In addition, compared with the conventional light-emitting diode lamp, the lamp provided by the invention has relatively simple constituent elements, which can greatly reduce the production cost of the lamp and simplify the assembly process. Furthermore, in an embodiment of the invention, the illumination mode The polar connection of the group can be automated with the production equipment to reduce production costs and speed production.

Although the embodiments of the present invention have been disclosed as above, it is not intended to limit the present invention, and any person skilled in the art can make some modifications and retouchings without departing from the spirit and scope of the present invention. The scope is defined as defined in the scope of the patent application.

100, 300b‧‧‧ lamps

110, 330‧‧‧ hollow lamp body

111‧‧‧ recess

112‧‧‧ recessed hole

120, 320, 420‧‧‧Lighting Module

121, 321, 421‧‧‧ circuit board

122, 322, 422‧‧‧Lighting parts

123, 323, 423‧‧ First and second polarity connections

130, 300a, 310, 410‧‧‧ end caps

131,311‧‧‧First and second polarity electrical terminals

132, 312, 412‧‧‧ first and second elastic conductors

133, 313, 413‧‧‧ slot rail

134, 314, 414‧‧‧ points

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. 2 is a side cross-sectional view of a portion of a lamp according to an embodiment of the present invention; FIG. 3A is a cross-sectional view of the end cap according to an embodiment of the present invention; FIG. 4 is a schematic cross-sectional view of a portion of a lamp tube according to an embodiment of the present invention; and FIG. 4 is a schematic view showing a combination of an end cap and a circuit substrate according to an embodiment of the present invention.

100‧‧‧ lamp

110‧‧‧Hollow light tube body

111‧‧‧ recess

112‧‧‧ recessed hole

120‧‧‧Lighting module

121‧‧‧ circuit board

122‧‧‧Lighting parts

123‧‧‧First and second polarity connections

130‧‧‧End cover

131‧‧‧First and second polarity electrical terminals

132‧‧‧First and second elastic conductors

133‧‧‧ groove rail

134‧‧‧ card points

Claims (10)

A lamp tube comprising: a hollow lamp body; a light-emitting module housed in the hollow lamp body, comprising: a circuit substrate, the two ends of the circuit substrate each having a first and second polarity connection portion And the first and second polarity connecting portions are electrically connected to the circuit substrate; and the plurality of light emitting members are electrically connected to the circuit substrate; and the two end caps are respectively sleeved in the hollow The two ends of the lamp body, each of the end covers includes a first exposed first and second polarity electrical terminals for electrically connecting to an external power source, and a pair of pins are disposed inside the end cover and respectively And the first and second elastic conductors electrically connected to the first and second polarity electrical terminals, when the two end caps are respectively sleeved at the two ends of the hollow lamp body, each of the end caps The first and second elastic conductors are electrically connected to the first and second polarity connecting portions at the two ends of the circuit board. The lamp of claim 1, wherein the first and second polarity connecting portions are perpendicular to the circuit substrate. The lamp tube of claim 2, wherein the first and second polarity connecting portions are metal conductive members for power supply contact. The lamp of claim 3, wherein the first and second elastic guiding systems are perpendicular to the surfaces of the first and second polar connecting portions. The lamp of claim 4, wherein the first and second elastic conductors are metal springs. The lamp of any one of claims 1 to 5, wherein the first polarity is a positive electrode and the second polarity is a negative electrode, or the first polarity is a negative electrode and the second polarity is a positive electrode. The lamp tube of claim 6, wherein the two ends of the hollow lamp body respectively have a pair of parallel-shaped recesses, and the two end caps respectively have a pair of parallel-set groove rails, wherein the two end caps respectively When the two ends of the hollow lamp body are sleeved, each of the pair of groove rails can be received in each of the pair of recesses, and the two ends of the circuit board are respectively inserted into the slots in the two end caps Inside the track. The lamp of claim 7, wherein the illuminating members are light emitting diodes. The lamp of claim 7, wherein the hollow tube system is made of plastic or glass. The lamp tube of claim 7, wherein the hollow lamp body has at least one recessed hole on an outer surface of the two ends, and each of the two end caps has at least one card point on the inner surface thereof, the recessed hole and the recessed hole The card points are coupled to each other.