TWI392832B - Fixed structure for lamp tube - Google Patents

Description

Lamp fixing structure

The invention relates to a lamp tube fixing structure, in particular to an LED lamp tube fixing structure capable of preventing misinsertion and assembly.

LED (light-emitting diode) as a light source has high brightness, energy saving, no noise, no stroboscopic, long service life, good versatility, etc. It has been widely used in homes, offices, shopping malls and other places.

Usually, the bases at both ends of the lamp tube are fixed to the light-emitting assembly by fasteners such as screws. During the assembly of the LED tube, the lamp cap is inserted on the illuminating element and the lamp cap is continuously rotated until the screw hole on the lamp cap is aligned with the screw hole on the illuminating body, and then locked by the screw. Since the screw hole needs to be continuously rotated to locate the screw hole when positioning the screw hole, and if the positioned lamp head is rotated by other external force, the positioning screw hole is re-searched, and the time for assembling the LED tube is increased.

In view of this, it is necessary to provide an LED tube fixing structure, which has the function of preventing mis-insertion and assembly, and saves assembly time.

A lamp tube includes a light-emitting component and a lamp cap, and the light-emitting component comprises a lamp cover, a lamp board and a heat sink. The heat dissipating member includes a base portion and a fixing portion, the base portion includes two free ends spaced apart from each other, and two supporting portions are extended from the two free ends, the two supporting portions are connected with the fixing portion, and the lamp cover and the lamp board are fixed at On the fixed part. The lamp cap includes a hollow housing and two positioning posts located inside the housing. The two positioning posts respectively abut the ends of the two supporting portions, thereby preventing the housing from rotating relative to the heat sink move.

The LED lamp tube fixing structure is provided with a positioning post in the housing of the lamp cap, so that when the lamp cap is fixed on the heat dissipating member, the insertion position can be accurately found, and the positioning hole is not required to be rotated. Therefore, the above fixed structure can effectively save assembly time and improve assembly efficiency.

As shown in Figure 1, an LED lamp 100 of a preferred embodiment of the present invention is disclosed. The light tube 100 includes a light emitting assembly 10 and a base 20. The base 20 is fixed at both ends of the light-emitting assembly 10, and the light-emitting assembly 10 is fixed to a holding portion (not shown) for holding the lamp tube 100 through the pin 22 of the base 20, and is in contact with a corresponding terminal of the holding portion to establish electricity. Connected, such electrical energy is transmitted to the tube 100 through the holding portion.

As shown in FIG. 2, the light emitting assembly 10 includes a heat sink 11, a light board 12, and a lamp cover 13. In the present embodiment, the heat sink 11 is made of a material having good thermal conductivity such as an aluminum alloy plate. An array of light emitting diodes is mounted on the front side of the light panel 12. The pin 22 of the base 20 is connected to each of the light-emitting diodes via a wire (not shown). The lampshade 13 is made of a transparent and fireproof material which is semi-cylindrical. The lamp panel 12 and the lamp cover 13 are sequentially fixed to the heat sink 11.

Referring to FIG. 3 together, the heat sink 11 includes a base portion 110 and a fixing portion 120. In the embodiment, the base portion 110 has a semi-cylindrical shape, and the light-emitting assembly 10 is integrated with the lamp cover 13 to have a cylindrical shape as a whole. The two free ends of the base 110 extend toward the two support portions 111. The length of the two support portions 111 is smaller than the radius of the base portion 110. The number of the fixing portions 120 is two, and each fixing portion 120 protrudes upward from a supporting portion 111, and includes a locking member 121 and a limit. The latching member 121 is an L-shaped hook plate extending upwardly from the vertical supporting portion 111 such that the first locking portion 130 is formed in the center of the latching member 121, wherein the free end of the L-shaped hooking plate is at the supporting portion The inside of the first end 112 of the 111. The limiting portion 122 extends perpendicularly to the side wall of the latching member 121 facing away from the first end 112. The free end of the limiting portion 122 is aligned with the second end 113 of the supporting portion 111, so that the limiting portion 122 and the supporting portion A second card slot 131 is formed between the 111s, wherein the first end 112 is located outside the support portion 111 and the second end 113 is located inside the support portion 111. The two sides of the lamp board 12 are received in the second card slot 131. The first card slot 130 of the heat sink 11 is disposed at two ends of the lamp cover 13 to face the two protrusions 103. The protrusions 103 are buckled on the heat sink. The first card slot 130 of the first slot 130 is fixed to the heat sink 11 . The lamp cover 13 and the lamp board 12 are fixedly connected to the heat sink 11 to enhance the heat dissipation capability of the light-emitting assembly 10, thereby effectively extending the service life of the lamp tube 100.

Referring to FIGS. 4 and 5 , the base 20 includes a housing 21 , a lead 22 , and a positioning post 23 . In this embodiment, the lamp cap has a cylindrical shape and is disposed at both ends of the light-emitting assembly 10 . The bottom of the housing 21 is provided with a positioning hole 25 and a screw hole 24. When the positioning hole 25 is corresponding to the position of the first slot 130 of the heat sink 11, the fastener such as a screw is locked to the first card through the positioning hole 25. In the slot 130, the housing 21 is fixed to the heat sink 11, wherein the diameter of the selected screw is larger than the inner diameter of the first slot 130. The pin 22 extends from the inside of the housing 21 through the screw hole 24 out of the housing 21 and is fixed to the housing 21 by screws. The positioning post 23 is disposed on the inner wall of the housing 21 near the positioning hole 25, so that the positioning post 23 abuts against the first end 112 of the support portion 111 during assembly, preventing the lamp cover 13 from sliding along the first card slot 130, and Effectively prevent the housing 21 from scattering The heat member 11 is relatively rotated. In this way, when the lamp cap 20 is connected to the heat sink 11 , the positioning post 23 is aligned with the first end 112 of the support portion 111 to be accurately positioned, the lamp cap 20 is fixed on the heat sink 11 , and the cap 20 is sleeved in the heat sink. The positioning member 23 abuts against the two ends of the supporting portion 111 to limit the position. If the positioning post 23 is not aligned with the first end 112 of the supporting portion 111, the cap 20 cannot be inserted into the heat dissipating member 11, thereby effectively preventing the error. Plug in.

In the LED lamp tube fixing structure, the positioning post 23 is disposed in the housing 21 of the lamp cap 20, so that when the lamp cap 20 is fixed on the heat dissipating member 11, the insertion position can be accurately found, and the positioning hole can be searched without rotating the probe. Therefore, the above fixed structure can effectively save assembly time and improve assembly efficiency.

10‧‧‧Lighting components

20‧‧‧ lamp holder

11‧‧‧ Heat sink

12‧‧‧light board

13‧‧‧shade

21‧‧‧ housing

22‧‧‧ pin

23‧‧‧Positioning column

24‧‧‧ screw holes

25‧‧‧Positioning holes

110‧‧‧ base

120‧‧‧Fixed Department

111‧‧‧Support

112‧‧‧ first end

113‧‧‧second end

121‧‧‧Snap fasteners

122‧‧‧Limited

130‧‧‧First card slot

131‧‧‧Second card slot

103‧‧‧Bump

100‧‧‧ lamp

1 is a perspective view of an LED tube according to a preferred embodiment of the present invention.

Figure 2 is a partially exploded perspective view of the lamp of Figure 1.

Figure 3 is a cross-sectional view of the lamp of Figure 1 taken along the line III-III.

4 is a partially exploded perspective view of the lamp cap of FIG. 1.

Figure 5 is a partial cross-sectional view of the lamp of Figure 1 in the V-V direction.

11‧‧‧ Heat sink

13‧‧‧shade

22‧‧‧ pin

23‧‧‧Positioning column

25‧‧‧Positioning holes

Claims (10)

A lamp tube comprising a light-emitting component and a lamp cap, the lamp cap being fixed at two ends of the light-emitting component, the light-emitting component comprising a lamp cover, a lamp board and a heat sink, wherein the heat sink comprises a base and a fixing part, the base comprises a mutual Two free ends of the interval, two support portions extending from the two free ends, the two support portions are connected to the fixed portion, the lampshade and the light board are fixed on the fixed portion; the lamp head comprises a hollow shell and a seat Two positioning posts inside the housing, the two positioning posts abut against the ends of the two supporting portions, respectively, thereby preventing the housing from rotating relative to the heat sink. The lamp tube of claim 1, wherein the number of the fixing portions is two, and each fixing portion protrudes upward from a supporting portion, and includes a locking member extending vertically upward and a vertical portion a limiting portion of the side wall of the fastening component, the first clamping groove formed in the center of the fastening component is used for fixing the lamp cover; and the limiting portion cooperates with the supporting portion to form a second clamping groove for fixing the light plate. The lamp tube of claim 2, wherein the latching member is an L-shaped hook plate extending upward from a vertical support portion, and the free end of the L-shaped hook plate is inside the first end of the support portion, wherein The first end is located outside the support. The lamp tube of claim 2, wherein the limiting portion extends perpendicularly to a direction in which the side wall of the fastening member faces away from the first end, and the free end of the limiting portion and the second end of the supporting portion The alignment is such that a second card slot is formed between the limiting portion and the support portion, wherein the second end is located inside the support portion. The lamp tube of claim 2, wherein the free end of the lamp cover cooperates with the first card slot of the heat dissipating component to face the protruding post, and the stud is buckled in the first card slot of the heat dissipating component, thereby The lamp cover is fixed to the heat sink. The lamp of claim 1, wherein the two bases are The ends are fixedly connected to the two fixing portions and integrally formed with the fixing portion. The lamp tube of claim 2, wherein the bottom of the housing is provided with a positioning hole, the positioning hole is corresponding to the position of the first slot of the heat sink, and the screw is locked to the first card through the positioning hole. In the slot, the housing is fixed to the heat sink, wherein the diameter of the screw is larger than the inner diameter of the first card slot. The lamp tube of claim 1, wherein the lamp cap further comprises a pin, and the bottom of the casing further has a screw hole extending from the inside of the casing through the screw hole and extending out of the casing, and It is fixed to the housing by screws. The lamp of claim 1, wherein the heat sink is made of an aluminum alloy plate material. The lamp of claim 1, wherein the lampshade is made of a transparent and fireproof material and has a semi-cylindrical shape.