TWI580896B - Lamp tube and end cap structure thereof - Google Patents

Description

Lamp and its end cover structure

The present invention relates to a lamp tube, and more particularly to a lamp tube having a manual switch function and an end cap structure thereof.

In order to meet the lamp holder design of the fluorescent lamp, the two ends of the lamp are integrally provided with two electrical connecting portions, and the electrical connecting portions are electrically connected to the power socket provided on the lamp socket to form a power supply circuit. To provide the power required for the lamp.

However, when the lamp tube is loaded or unloaded, the electrical connection portion on one side of the lamp tube is electrically connected to the power supply slot corresponding to the lamp holder side, but the electrical connection portion on the other side of the lamp tube is not yet mounted on the other side of the lamp holder. In the case of the power supply slot, if the user touches the exposed electrical connection on the other side of the lamp by hand, there is a possibility that the current is electrically connected to the ground through the human body to form a circuit, which may cause a user to have an electric shock during installation.

The invention relates to a lamp tube and an end cap structure thereof, which has a manual Switch the switch function to avoid the risk of electric shock caused by the user's accidental touch.

According to an aspect of the invention, an end cap structure for a lamp tube is provided, comprising an end cap housing, an electrical connection portion, a first switch unit, a second switch unit and a conductive elastic piece. The end cover housing includes a bottom portion and a side portion, the side portions are connected and disposed around the bottom portion, and the bottom portion and the side portion form an accommodation space. The electrical connection portion is disposed on the bottom portion for receiving an external power source, a portion of the electrical connection portion is located outside the bottom portion, and a portion of the electrical connection portion is located in the accommodating space. The first switch unit is movably disposed on the bottom portion, a portion of the first switch unit is located outside the bottom portion, and a portion of the first switch unit is located in the accommodating space. The first switch unit is pressed to move the first switch unit from an original position to a first position. Limit position. The second switch unit is movably disposed on the side portion. The conductive elastic piece is disposed in the accommodating space and is interlocked with the second switch unit, and the conductive elastic piece and the electrical connection part are spaced apart by a distance. When the first switch unit is in the limit position, the conductive elastic piece is electrically connected to the electrical connection portion in the accommodating space by moving the second switch unit relative to the side portion, and the first switch unit stops the second switch unit.

According to an aspect of the invention, a lamp tube is provided, comprising a tube body, the above-described end cap structure and a light bar. The tubular body has a first end and a second end. The end cap structure is disposed on the first end portion and the second end portion. The light bar is located inside the tube body, and one side of the light bar is electrically connected to the conductive elastic piece of the end cover structure.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

10‧‧‧Power supply loop

20‧‧‧ boards

30‧‧‧Lighting diode

100‧‧‧ lamp

11, 12, 101, 201‧‧‧ end cap structure

103‧‧‧pipe body

104‧‧‧ drive

105‧‧‧Signal wire

110‧‧‧First housing

112‧‧‧ first side

113‧‧‧ accommodating holes

114‧‧‧ Guide hole

115‧‧‧ Groove

116‧‧‧ card slot

117‧‧‧ annular wall

120‧‧‧Electrical connection

121‧‧‧Electric Reception Department

122‧‧‧Fixed Department

123‧‧‧Contacts

130, 230‧‧‧ first switch unit

131‧‧‧Exposed Department

132‧‧‧ Guidance Department

133‧‧‧ Pressing Department

134, 234‧‧‧First Limitation Department

140, 240‧‧‧Second switch unit

141, 241‧‧‧ Touching Department

142, 242‧‧‧ Second Limit Department

150, 250‧‧‧ conductive shrapnel

151‧‧‧Electric touch

152‧‧‧Clock Department

153‧‧‧shims

154‧‧‧Bend

160, 260‧‧‧ first elastic parts

160e1, 170e1, 172e1‧‧‧ first end

160e2, 170e2, 172e2‧‧‧ second end

170, 270‧‧‧ second elastic parts

172‧‧‧ Third elastic parts

180‧‧‧second housing

181, 186‧‧‧ fixed column

182‧‧‧ second side

183‧‧‧Knocking ring

184‧‧‧ board

185‧‧‧stops

187‧‧‧ inner wall

190‧‧‧End cover housing

191‧‧‧ bottom

192‧‧‧ side

200‧‧‧External power supply

215‧‧‧K hook section

243‧‧‧Rotating body

281‧‧‧Sliding section

2341‧‧‧ positioning guide

2342‧‧‧Extension

2343‧‧‧stepped opening

2421‧‧‧ convex

2422‧‧‧ Arm

2431‧‧‧ penetration

C‧‧‧ accommodating space

D‧‧‧Distance

D1‧‧‧ radial direction

F1‧‧‧External force

F2‧‧‧ press pressure

F3‧‧‧Top output

F4, T2‧‧‧Reset force

F5‧‧‧Flexibility

L‧‧‧ length

P‧‧‧ pads

PW1‧‧‧First power cord

PW2‧‧‧second power cord

PW3‧‧‧ internal lines

R1‧‧‧ direction of rotation

SW1, SW2‧‧‧ switch

T1‧‧‧ Torque

1A and 1B are schematic diagrams showing the circuit of a lamp tube and a power supply circuit thereof according to an embodiment of the invention.

2 is a schematic view of a lamp tube in accordance with an embodiment of the present invention.

FIG. 3A is a schematic view showing the first switch unit of the end cap structure of the lamp tube in an original position according to an embodiment of the invention.

FIG. 3B is a schematic view showing the first switch unit of the end cap structure of FIG. 3A in a limit position.

Figure 4 is an exploded view of the end cap structure of Figure 3A.

5A to 5G are diagrams showing the internal structure of the end cap structure of Fig. 3A.

FIG. 6A is a schematic view showing the first switch unit of the end cap structure of the lamp tube in an original position according to another embodiment of the present invention.

FIG. 6B is a schematic view showing the first switch unit of the end cap structure of FIG. 6A in a limit position.

Figure 7 is an exploded view of the end cap structure of Figure 6A.

8A to 8D are diagrams showing the internal structure of the end cap structure of Fig. 6A.

FIG. 9A is a schematic view showing the first switch unit of the end cap structure of the lamp tube in an original position according to still another embodiment of the present invention.

FIG. 9B is a schematic view showing the first switch unit of the end cap structure of FIG. 9A in a limit position.

Figure 10A is an exploded view of the end cap structure of Figure 9A.

FIG. 10B is a partial enlarged view of the first limiting portion of the end cap structure of FIG. 10A.

FIG. 10C is a partial enlarged view of the second limiting portion of the end cap structure of FIG. 10A Figure.

11A to 11D are diagrams showing the internal structure of the end cap structure of Fig. 9A.

The embodiments are described in detail below, and the embodiments are only intended to be illustrative and not intended to limit the scope of the invention. Unless otherwise stated, the same or similar element symbols denote the same or similar elements.

1A and 1B, FIG. 1A and FIG. 1B are schematic diagrams showing the circuit of the lamp tube 100 and the power supply circuit 10 thereof according to an embodiment of the present invention, and FIG. 2 is a diagram showing a lamp tube according to an embodiment of the invention. Schematic diagram of 100. The lamp tube 100 includes a first end cap structure 11, a second end cap structure 12 and a tube body 103. The first end cap structure 11 is disposed at the first end of the tube body 103, and the second end cap structure 12 is disposed at The second end of the tubular body 103. The lamp body 103 has a light bar and a driver 104. The light bar can include a circuit board 20 and a plurality of LEDs 30 disposed on the circuit board 20, and the driver 104 is electrically connected to the circuit board 20, and the lamp The strips can be electrically connected to the first end cap structure 11 and the second end cap structure 12 by the internal line PW3. In an embodiment, the first end cap structure 11 and the second end cap structure 12 may be end cap structures having a manual diverter switch function. In an embodiment, the second end cap structure 12 can be identical to the first end cap structure 11, in which case the second end cap structure 12 can be operated in a manner that references the operation of the first end cap structure 11. In another embodiment, the first end cap structure 11 can be different than the second end cap structure 12, but also has a manual diverter switch function. The first end cap structure 11 will be described below.

When the lamp tube 100 is mounted on the socket by the first end cap structure 11 and the second end cap structure 12, the electrical connection portion 120 of the first end cap structure 11 is connected to one of the first power lines PW1 of the power supply circuit 10. The electrical connection portion 120 of the second end cap structure 12 is connected to the second power supply line PW2 of the power supply circuit 10. Moreover, if the user manually switches the switches SW1 and SW2 through the tool (as in FIG. 1A) or automatically switches back to off (as in FIG. 1B), the switch can be turned ON or turned off. The external power source 200 required for 100 is, for example, an alternating current power source or a direct current power source. In an embodiment, the lamp holder can be a commonly used lamp holder, and opposite ends of the lamp holder are embedded with opposite power sockets, and the two ends of the lamp tube 100 are combined and fixed.

As shown in FIG. 1A, the power supply circuit 10 is, for example, an AC circuit that is electrically connected to both ends of the lamp tube 100. When the lamp tube 100 is mounted on the lamp holder, the user can manually switch the switches SW1 and SW2 to be turned on by the tool, and the internal line PW3 of the lamp tube 100 is electrically connected to the first power line PW1 and the second power line PW2, The driver 104 can receive the external power source 200 and be driven by the current to turn on, so that the lamp 100 is turned on in the power supply circuit 10. In FIG. 1B, when the lamp tube 100 is detached from the lamp holder, the switches SW1 and SW2 of the first end cover structure 11 and the second end cover structure 12 are automatically switched to be off, so that the internal line PW3 is first. The power line PW1 and the second power line PW2 are electrically isolated. Thus, the driver 104 is disconnected from the external power source 200 and cannot receive the external power source 200, so that the lamp 100 is not turned on in the power supply circuit 10. Thereby, even if the user first removes the second end cap structure 12 from the lamp holder and touches the electrical connection portion 120 on the first end cap structure 12, the switch SW2 of the second end cap structure 12 is automatically switched to Closed, so the current does not turn on the ground through the human body Loop into the circuit to avoid the possibility of electric shock.

Please refer to FIGS. 3A and 3B , which are illustrated by taking the first end cap structure 11 as an example. The first end cap structure 11 has a double switch structure. However, the second end cap structure 12 can be the same as or different from the first end cap structure 11, but both also have a dual switch structure. The double switch structure is a first switch unit 130 and a second switch unit 140 having a pressing function. FIG. 3A is a schematic view showing the first switch unit 130 of the end cap structure 11 of the lamp tube in an original position according to an embodiment of the invention. For example, when the lamp tube 100 has not been mounted on the lamp holder, the first end cover structure 11 It is not pressed against one end of the lamp holder, so that the first switch unit 130 has not been pressed. FIG. 3B is a schematic view showing the first switch unit 130 of the end cap structure 11 of FIG. 3A in a limit position, for example, when the lamp tube 100 is mounted on both sides of the socket, the first end cover structure 11 and the second The end cap structure 12 is pressed against the two ends of the lamp holder, so that the first switch unit 130 is pressed into the accommodating space C of the end cap structure 11. Therefore, when the lamp tube 100 is mounted on a lamp holder, the first switch unit is pressed and activated, and then the second switch unit is switched to the open state, for example, by a tool or manually, so that the lamp tube 100 receives an external power source; When the tube 100 is removed from the base, the dual switch configuration will automatically reset to cause the tube 100 to shut off the external power source. In this way, the risk of electric shock caused by accidental contact when the lamp is mounted on the lamp holder can be avoided; at the same time, the lamp 100 of this type can also meet various safety regulations.

The end cover structure 11 includes an end cover housing 190 , an electrical connection portion 120 , a first switch unit 130 , and a second switch unit 140 . The end cover housing 190 can be formed by combining a first housing 110 and a second housing 180. Body shaped structure. The end cap housing 190 has a bottom portion 191 and a side portion 192, wherein the side portion 192 is connected and disposed around the bottom portion 191, and the bottom portion 191 and the side portion 192 form an accommodation space C. The electrical connection portion 120 is disposed on the bottom portion 191 for receiving an external power source. In an embodiment, the electrical connection 120 can include two electrical terminals. The first switch unit 130 is movably disposed on the bottom portion 191, and the second switch unit 140 is movably disposed on the side portion 192. The portion of the electrical connection portion 120 and a portion of the first switch unit 130 are exposed outside the bottom portion 191, and the other portion of the electrical connection portion 120 and the other portion of the first switch unit 130 are located in the accommodating space C. When the end cover housing 190 is combined with the first housing 110 and the second housing 180, the side portion 192 may include the first side 112 of the first housing 110 and the second side of the second housing 180. Side 182. In the embodiment, the second switch unit 140 is movably disposed on the first side 112 of the first housing 110.

Please refer to FIG. 4, which shows an exploded view of the end cap structure 11 of FIG. 3A. The end cap structure 11 further includes a conductive elastic piece 150, a first elastic member 160, a second elastic member 170, a stopper member 185, a plate body 184 and a third elastic member 172.

Referring to FIGS. 3A, 3B, and 4, the first housing 110 can include an annular wall 117, and the annular wall 117 can be engaged with the inner wall 187 of the second housing 180. The end cover housing 190 is joined to the inner wall 187 of the second housing 180 by the annular wall 117. The bottom portion 191 of the end cover housing 190 can have a receiving hole 113. The electrical connecting portion 120 can include an electrical receiving portion 121, a fixing portion 122, and a contact portion 123. The electrical connection portion 120 can be fixed by the fixing portion 122. It is accommodated in the hole 113. The electric receiving portion 121 protrudes beyond the bottom 191 of the end cap housing 190 to receive an external power source. The contact portion 123 is disposed in the accommodating space C to be in electrical contact with the conductive elastic piece 150.

In addition, the bottom portion 191 of the end cover housing 190 can also have a guiding hole 114 for receiving the first switching unit 130. The first switch unit 130 can include a pressing portion 133 and a first limiting portion 134. The first limiting portion 134 is connected to the pressing portion 133 and disposed in the accommodating space C. The exposed portion 131 of the pressing portion 133 protrudes beyond the bottom portion 191 of the end cap housing 190 for pressing. The guiding portion 132 of the pressing portion 133 is disposed in the guiding hole 114 to make the first switching unit 130 movable on the bottom portion 191. In addition, the guiding portion 132 may have a hook structure to prevent the first switching unit 130 from falling out of the end cover housing 190.

The first limiting portion 134 passes through the hollow portion of the first elastic member 160, so that the first elastic member 160 can be sleeved on the first limiting portion 134 and disposed under the pressing portion 133. The first elastic member 160 can be a compression spring. The first end 160e1 is connected to the bottom of the pressing portion 133, and the opposite second end 160e2 is connected and fixed to the first housing 110 in the accommodating space C. Therefore, the first elastic member 160 can have the second end 160e2 as a fixed end and the first end 160e1 as an elastic end, thereby providing an pressing force of the pressing portion 133 to keep the first switching unit 130 in the original position. Specifically, when the pressing portion 133 is subjected to an external force, the first elastic member 160 is deformed. If the pressing portion 133 is no longer subjected to an external force, the first switching unit 130 automatically returns to the original position by the restoring force (ie, the ejection force) generated by the deformation of the first elastic member 160.

The plate body 184 is located in the second housing 180 . The stopper 185 is disposed in a recess of the plate body 184 and is movably disposed under the first limiting portion 134 and abuts against the first limiting portion 134 . The third elastic member 172 can be sleeved on a fixing post 186 of the stopping member 185 for moving the stopping member 185 to a stop position. In detail, the third elastic member 172 can be a compression spring, and the first end 172e1 is connected to the bottom of the stopper 185, and the opposite second end 172e2 is connected and fixed to the second casing in the accommodating space C. 180. Therefore, the third elastic member 172 can have the second end 172e2 as a fixed end and the first end 172e1 as an elastic end, thereby providing an elastic force for the stopper 185 to return to the stop position. Specifically, as shown in FIG. 3B, if the pressing portion 133 of the first switching unit 130 is subjected to an external force to move the first switching unit 130 from the original position to the limit position, the stopper 185 also follows The first limiting portion 134 moves, so that the third elastic member 172 is deformed. If the pressing portion 133 is no longer subjected to an external force and the first switching unit 130 is automatically returned to the original position, the stopper 185 will return to the stop position due to the elastic force generated by the deformation of the third elastic member 172, such as Figure 3A shows.

As shown in FIG. 4 , the second switch unit 140 can be partially disposed in the accommodating space C and can include a touch portion 141 and a second limit portion 142 . The first side 112 of the first housing 110 may have a recess 115, and the second switch unit 140 is movably disposed on the recess 115 of the first side 112. The actuation portion 141 is, for example, a push button that is exposed from the recess 115 of the first side 112. The second limiting portion 142 is connected to the touch portion 141 and disposed in the accommodating space C. As shown in FIG. 4, since the first side 112 of the first housing 110 is a cylindrical curved surface, the second switching unit The 140 is linearly movable along a radial direction D1 that is perpendicular to the first side 112. However, as shown in FIG. 3B, when the stopper 185 is in the stop position, the second switch unit 140 will not be able to move linearly in the radial direction D1, that is, the stopper 185 will stop the second switch unit 140. Movement in the radial direction D1.

Referring to FIGS. 3A, 3B, and 4, the conductive elastic piece 150 can be further disposed in the accommodating space C and disposed on the second switch unit 140, and can be interlocked with the second switch unit 140. For example, one side of the conductive elastic piece 150 can be formed with a latching portion 152. The conductive elastic piece 150 can be fixed to the second switch unit 140 by the engaging portion 152 to make the conductive elastic piece 150 and the second switch unit 140. Gearing. In addition, the conductive elastic piece 150 may further include a spacer 153. One end of the spacer 153 may extend close to the contact portion 123 of the electrical connection portion 120 and be bent to form an electrical contact portion 151. The electrical contact portion 151 and the contact portion 123 are spaced apart by a distance D in the radial direction D1 (indicated in FIG. 5A). The other end of the spacer 153 can form a curved portion 154. The curved portion 154 is spaced apart from a pad P on the circuit board 20 at the end of the light bar by a distance D in the radial direction D1 (indicated in FIG. 5A). .

In this embodiment, since the stopper 185 is in the stop position, the movement of the second switch unit 140 in the radial direction D1 is prevented. Even if the user accidentally touches the touch portion 141, the second switch unit 140 cannot A linear movement is made in the radial direction D1. Therefore, before the end cap structure 11 is completely mounted on the socket, the electrical contact portion 151 and the curved portion 154 can be prevented from electrically contacting the contact portion 123 and the pad P, respectively.

In addition, the second elastic member 170 can be sleeved on the fixing post 181 of the board 184 and connected to the second switch unit 140. Wherein, the second elastic member 170 can As a compression spring, the first end 170e1 of the second elastic member 170 is connected to the plate body 184, and the second end 170e2 opposite to the first end 170e1 is connected to the second switch unit 140, and provides a reset of the second switch unit 140. force. Specifically, if the second switch unit 140 is subjected to a pressing force, the second elastic member 170 will be deformed. If the second switch unit 140 is no longer limited, the second switch unit 140 automatically rebounds due to the restoring force (ie, the restoring force) generated by the deformation of the second elastic member 170.

As shown in FIG. 4, the first limiting portion 134 of the embodiment may include a limiting cylinder, and the second limiting portion 142 may include a hook. The hook can be used to hook the limit cylinder (as shown in FIG. 5D), so the limit cylinder can stop the hook in the radial direction D1, so that the second switch unit 140 is limited in the radial direction D1. . Although the first limiting portion 134 and the second limiting portion 142 of the embodiment are respectively illustrated by a limiting cylinder and a hook, the present invention is not limited thereto, and the invention belongs to the general knowledge. It should be understood that as long as the first limiting portion 134 can stop the second limiting portion 142 in the radial direction D1, it is within the protection scope of the present invention.

5A to 5G are diagrams showing the internal structure of the end cap structure 11 of Fig. 3A. To keep the drawing simple, the end cap housing 190 is not shown in Figures 5A through 5G.

Please also refer to Figures 5A through 5C. FIG. 5A is a schematic diagram showing the first switch unit 130 in an original position. At this time, the electric touch portion 151 and the curved portion 154 are respectively spaced apart from the contact portion 123 and the pad P by a distance D in the radial direction D1. Isolation, and the stop 185 is in the stop position, so it can be in the radial direction D1 The movement of the upper stop second switching unit 140 is stopped. When the end cap structure 11 is mounted in the socket, the pressing portion 133 is subjected to the external force F1 to move the first switching unit 130. At this time, the stopper 185 abutting on the first limiting portion 134 is also away from the stopping position as the first limiting portion 134 is pushed, as shown in FIGS. 5B and 5C, and the first elastic member Both the 160 and the third elastic member 172 are deformed by compression.

Referring to FIG. 5C, the first limiting portion 134 includes a limiting cylinder and may have a limiting length L. The limit length L is sufficient for the limit cylinder to be in the limit position, so that the card of the second limit portion 142 can hook the limit cylinder in the radial direction D1, and the limit cylinder is in the radial direction. The effect of the stop hook is reached on D1. Moreover, when the pressing portion 133 is unstressed, the limiting length L must also be sufficient to move the limiting cylinder away from the limiting position, so that the limiting cylinder can release the hook in the radial direction D1.

Please also refer to Figures 5C and 5D. When the limiting cylinder (the first limiting portion 134) is in the limiting position, the second switching unit 140 is no longer blocked by the stopper 185, so the user can press the second switching unit in the radial direction D1. The touch portion 141 of 140. The contact portion 141 is driven by the pressing force F2 to move the hook (the second limiting portion 142), the electric contact portion 151, and the curved portion 154 by a distance D in the radial direction D1. In this way, the hook (the second limiting portion 142) can hook the limiting cylinder (the first limiting portion 134), and the hook (the second limiting portion 142) stops in the radial direction D1. It is not possible to move in the radial direction D1. At the same time, the electric touch portion 151 and the curved portion 154 can be electrically connected to the contact portion 123 and the pad P, respectively. At this time, the second elastic member 170 is also deformed by compression.

Please also refer to Figures 5D to 5F. If the end cap structure 11 is from the lamp When the seat is removed, the pressing portion 133 is no longer subjected to an external force. At this time, the first switch unit 130 can be automatically moved away from the limit position by the restoring force (the ejection force F3) generated by the deformation of the first elastic member 160. The original position of the fifth F1 is moved; at the same time, the first limiting unit 134 releases the second limiting portion 142 because the first switching unit 130 is away from the limiting position, so the second limiting portion 142 does not in the radial direction D1. Further limited by the first limiting portion 134, the second switching unit 140 automatically rebounds due to the restoring force (ie, the restoring force F4) generated by the deformation of the second elastic member 170, and makes the electrical contact portion The 151 and the curved portion 154 are electrically separated from each other by a distance D between the contact portion 123 and the pad P in the radial direction D1.

In the process of the 5D to 5F, the first switch unit 130 is first moved to the original position, in which the first limiting portion 134 releases the second limiting portion 142, so that the second switching unit 140 is biased by the second elasticity. The function of the piece 170 automatically rebounds. After the second switch unit 140 rebounds, the stopper 185 is moved toward the stop position of the 5Gth image by the elastic force F5 generated by the deformation of the third elastic member 172.

Therefore, the first switch unit 130 and the second switch unit 140 are disposed at the bottom and the side of the end cover housing of the lamp tube, and the first switch unit 130 is pressed after being mounted into the lamp holder through the lamp tube, and then passed through the manual or The tool turns on the second switch 140 to complete the energization. When the lamp tube is removed from the lamp holder, the first switch unit 130 and the second switch unit 140 are automatically rebounded and closed. Therefore, the present invention can prevent the risk of electric shock during the installation of the lamp tube, and can also prevent the fire line operation from directly damaging the lamp tube.

Referring to FIGS. 6A and 6B , FIG. 6A illustrates the first switch unit 130 of the end cap structure 101 of the lamp tube in an original position according to another embodiment of the present invention. FIG. 6B is a schematic diagram showing the first switch unit 130 of the end cap structure 101 of FIG. 6A in a limit position. The difference between the end cap structure 101 of the present embodiment and the end cap structure 11 of FIGS. 3A and 3B is that the stopper 185 and the third elastic member 172 can be omitted in this embodiment, and the conductive elastic piece 150 is electrically connected to the light bar. There are also differences, and the structure and function of the other similarities will not be described again.

Figure 7 is an exploded view of the end cap structure 101 of Figure 6A. Referring to FIGS. 6A, 6B and 7 simultaneously, the first housing 110 can include a card slot 116, and the card slot 116 can have an annular recess. The second housing 180 can include a snap ring 183. The snap ring 183 can have an annular protrusion corresponding to the annular recess of the slot 116. Therefore, the first housing 110 can be coupled to the second housing by the slot 116. The snap rings 183 of the body 180 are combined with each other to form the end cap housing 190.

The second switch unit 140 is disposed in the accommodating space C and is movably disposed on the groove 115 of the first side surface 112 along the radial direction D1. Moreover, the touch portion 141 of the second switch unit 140 is exposed from the recess 115 and sunk into the first side surface 112 to be disposed in the accommodating space C. In this embodiment, the touch portion 141 can include a push button, and since the push button is exposed from the recess 115 of the first side 112 and sinks into the first side 112, the user must use a tool (for example, a needle). The push button is pressed in the radial direction D1 and cannot be operated by hand to meet regulatory requirements.

In addition, one end of the spacer 153 of the conductive elastic piece 150 may extend close to the contact portion 123 and be bent to form the electrical touch portion 151, and the electrical contact portion 151 and the contact portion 123 are separated by a distance D in the radial direction D1 (painted Shown in Figure 8A). The other end of the spacer 153 can extend to one of the signal wires 105 at the end of the light bar, and is guided by the signal One end of the line 105 is electrically connected, and the other end of the signal line 105 is electrically connected to the driver 104 (labeled in FIGS. 1A, 1B) and the light bar to provide power to the driver 104 and the light bar. In an embodiment, the conductive elastic piece 150 is electrically connected to the light bar in the same manner as the end cover structure 11 of FIGS. 3 to 5.

8A to 8D are diagrams showing the internal structure of the end cap structure 101 of Fig. 6A. To keep the drawing simple, the end cap housing 190 is not shown in Figures 8A through 8D.

Please also refer to Figures 8A and 8B. FIG. 8A is a schematic diagram showing the first switch unit 130 in an original position. At this time, the electric touch portion 151 and the contact portion 123 are electrically separated from each other by a distance D in the radial direction D1. When the end cap structure 101 is installed in the lamp holder, the pressing portion 133 is subjected to the external force F1, and the first switch unit 130 is moved from the original position to the limit position of FIG. 8B, and the first elastic member 160 is generated by compression. deformation.

Referring to FIG. 8B, the limiting cylinder (the first limiting portion 134) may have a limiting length L, and the limiting length L is sufficient for the limiting cylinder to be in the limit position to make the hook (second The limiting portion 142) can hook the limiting cylinder in the radial direction D1, and the limiting cylinder achieves the effect of stopping the hook in the radial direction D1. Moreover, when the pressing portion 133 is unstressed, the limiting length L must also be sufficient to move the limiting cylinder away from the limiting position, so that the limiting cylinder can release the hook in the radial direction D1.

Please also refer to Figures 8B and 8C. When the limiting cylinder (the first limiting portion 134) is in the limiting position, the user can press the actuation portion 141 of the second switching unit in the radial direction D1 by the tool, and the actuation portion 141 is subjected to the pressing force F2. The hook (the second limiting portion 142) and the electrical touch portion 151 are moved together by the distance D in the radial direction D1. In this way, the hook (the second limiting portion 142) can hook the limiting cylinder (the first limiting portion 134), and the hook (the second limiting portion 142) stops in the radial direction D1. It is impossible to move in the radial direction D1; at the same time, the electric touch portion 151 can also be electrically connected to the contact portion 123. At this time, the second elastic member 170 is also deformed by compression.

Please also refer to Figures 8C and 8D. When the end cap structure 101 is detached from the lamp holder, the pressing portion 133 is no longer subjected to an external force, and the first switch unit 130 can be acted upon by the restoring force (ejection force F3) generated by the deformation of the first elastic member 160. Automatically away from the limit position and return to the original position of the 8D picture; at the same time, because the first switch unit 130 is away from the limit position, the first limit portion 134 releases the second limit portion 142, so the second limit portion 142 is no longer limited by the first limiting portion 134 in the radial direction D1, and the second switching unit 140 automatically rebounds due to the restoring force (ie, the restoring force F4) generated by the deformation of the second elastic member 170. The electrical contact between the electrical contact portion 151 and the contact portion 123 is electrically isolated.

Referring to FIGS. 9A and 9B, FIG. 9A is a schematic view showing the first switch unit 230 of the end cap structure 201 of the lamp tube in an original position according to another embodiment of the present invention, and FIG. 9B is a view showing FIG. 9A. A schematic diagram of the first switch unit 230 of the end cap structure 201 in a limit position. The difference between the end cover structure 201 of the present embodiment and the end cover structure 101 of the 6A and 6B is that the operation structure between the first switch unit 230 and the second switch unit 240 is different, and the structure and function of the other similarities will not be Let me repeat.

In the embodiment, the first switch unit 230 is movably disposed on the bottom portion 191, and the second switch unit 240 is movably disposed on the side portion 192. The second switch unit 240 is movably disposed on the second side surface 182 of the second housing 180 when the end cover housing 190 is combined with the first housing 110 and the second housing 180. In particular, one of the differences between the present embodiment and the end cap structure 101 of FIGS. 6A and 6B is that the second switching unit 240 of the present embodiment is rotatably disposed on the side portion 192.

Please refer to FIG. 10A, which shows an exploded view of the end cap structure 201 of FIG. 9A. The end cap structure 201 further includes a conductive elastic piece 250, a first elastic member 260 and a second elastic member 270.

Referring to FIGS. 9A, 9B, and 10A simultaneously, the first housing 110 can be coupled to the second housing 180 by the hook portion 215 to form the end cap housing 190.

In addition, the first switch unit 230 includes a pressing portion 133 and a first limiting portion 234 . The first limiting portion 234 is connected to the pressing portion 133 and disposed in the accommodating space C.

In Fig. 9A, the first switching unit 230 is in a home position, i.e., the state in which the end cap structure 201 has not been mounted into the socket. In FIG. 9B, the first switch unit 230 is in a limit position, indicating that the end cap structure 201 of the lamp tube is mounted on the lamp socket, so that the entire first switch unit 230 is depressed into the accommodating space C. . In this embodiment, the first limiting portion 234 passes through the hollow portion of the first elastic member 260, so that the first elastic member 260 can be sleeved on the first limiting portion 234 and disposed under the pressing portion 133. The first elastic member 260 can be a compression spring. The first end is connected to the bottom of the pressing portion 133, and the opposite second end is connected and fixed to the end cover housing 190 in the accommodating space C. Therefore, the first elastic member 260 can have a fixed end at the second end and an elastic end at the first end, thereby providing an pressing force of the pressing portion 133 to keep the first switching unit 230 in the original position. Specifically, when the pressing portion 133 is subjected to an external force, the first elastic member 260 is deformed. If the pressing portion 133 is no longer subjected to an external force, the first switching unit 230 automatically returns to the original position due to the restoring force (ie, the ejection force) generated by the deformation of the first elastic member 260.

Referring to FIGS. 9A, 9B, and 10A, the second switch unit 240 is disposed in the accommodating space C. The second side 182 of the second housing 180 can have a sliding portion 281, and the second switch unit 240 can be rotated. The ground portion is disposed on the sliding portion 281 of the second side surface 182. Moreover, since the second switch unit 240 is disposed in the accommodating space C, a portion of the second switch unit 240 can be exposed from the sliding portion 281 for rotation by the arrangement of the sliding portion 281. As shown in FIG. 10A, since the second side surface 182 of the second housing 180 is a cylindrical curved surface, the second switching unit 240 can be rotated circumferentially in a rotational direction R1 by the second side surface 182.

In FIG. 10A, the second switch unit 240 is disposed in the accommodating space, and may include a touch portion 241, a second limit portion 242, and a rotatable body 243. The contact portion 241 is exposed from the sliding portion 281 of the second side surface 182 and sinks into the second side surface 182. The rotatable body 243 is rotatably disposed on the second side 182 along the rotational direction R1. In this embodiment, the touch portion 241 may include a recessed portion, and the recessed portion is disposed on the rotatable body 243 and slidably exposed from the sliding portion 281 along the rotational direction R1. Since the depressed portion is exposed from the sliding portion 281 of the second side surface 182 When the second side 182 is lowered and sunk, the user must use a tool (for example, a flat-tipped screwdriver) to move the recess in the direction of rotation R1, and cannot be operated by hand to meet regulatory requirements.

In addition, the conductive elastic piece 250 may be further disposed in the accommodating space C. In this embodiment, one end of the conductive elastic piece 250 can be disposed on the rotatable body 243. Thus, the conductive elastic piece 250 can be fixed on the rotatable body 243 and interlocked with the second switch unit 240. In addition, the other end of the conductive elastic piece 250 can extend downward through the rotatable body 243 to be electrically connected to one end of the signal wire 105 at the end of the light bar.

In addition, the second elastic member 270 can be connected to the second switch unit 240. The second elastic member 270 can be a torsion spring. One end is connected to the second housing 280, and the other end is connected to the rotatable body 243, and the second switching unit 240 is provided with a restoring force. Specifically, when the second switch unit 240 is rotated in the rotational direction R1, the second elastic member 270 is deformed by the torque. If the second switch unit 240 is no longer limited, the second switch unit 240 automatically returns to the restoring force (ie, the restoring force) generated by the deformation of the second elastic member 270.

10B is a partial enlarged view of the first limiting portion 234 of the end cap structure 201 of FIG. 10A, and FIG. 10C is a partial enlarged view of the second limiting portion 242 of the end cap structure 201 of FIG. 10A.

As shown in FIG. 10B, the first limiting portion 234 of the embodiment may include a positioning guiding groove 2341 extending in the direction of the vertical bottom portion 191. In addition, the first limiting portion 234 may further include an extension post 2342. The extension post 2342 can extend from the lower end portion of the positioning guide 2341 in the direction of the vertical bottom 191. In another embodiment, the first limiting portion 234 may include only the positioning guide 2341, and does not include the extension post 2342. If the first limiting portion 234 includes the extension post 2342, a stepped opening 2343 is formed between the positioning guide 2341 and the extension post 2342.

As shown in FIG. 10C, the second limiting portion 242 can include a convex portion 2421. Referring to FIGS. 10B and 10C, the shape of the positioning guide 2341 may correspond to the convex portion 2421. In this way, if the convex portion 2421 is embedded in the positioning guide groove 2341, the convex portion 2421 can slide in the direction in which the positioning guide groove 2341 extends in the positioning guide groove 2341, but is not movable in the rotation direction R1.

In addition, the rotatable body 243 can have a through portion 2431 that can extend along the rotational direction R1 and penetrate the rotatable body 243. In this case, the convex portion 2421 can be coupled to the rotatable body 243 by an arm 2422 and disposed in the through portion 2431.

Although the first limiting portion 234 and the second limiting portion 242 of the embodiment are described above as an example, the present invention is not limited thereto, and the field of the invention should be understood by those of ordinary skill as long as it can The structure in which the first limiting portion 234 stops the second limiting portion 242 in the rotational direction R1 is within the protection scope of the present invention.

11A to 11D are diagrams showing the internal structure of the end cap structure 201 of Fig. 9A. To keep the drawing simple, the end cap housing 190 is not shown in Figures 11A through 11D.

Please also refer to Figures 11A and 11B. Figure 11A shows the first opening The off unit 230 is in a schematic view of the original position, at which time the conductive elastic piece 250 is not electrically contacted with the contact portion 123. As shown in FIG. 11A, the positioning guide 2341 and the extending portion 2342 can be disposed through the through portion 2431. When the end cap structure 201 is mounted in the socket, a portion of the pressing portion 233 outside the bottom portion 191 of the protruding end cap housing 190 is subjected to the external force F1, and the first switching unit 230 is moved from the original position to the one of the 11B. The position is limited, and the first elastic member 260 is deformed by compression.

Please also refer to Figures 11B and 11C. When the positioning guide 2341 is in the limiting position, the user can move the touch portion 241 in the rotating direction R1 by the tool. The rotating body 243 drives the convex portion 2421 and the conductive elastic piece 250 along with the torque T1. The rotation direction R1 is rotated, and the convex portion 2421 is fitted in the positioning guide 2341. In this way, the positioning guide 2341 can stop the protrusion 2421 in the rotation direction R1, so that the protrusion 2421 cannot move in the rotation direction R1; at the same time, the conductive elastic piece 250 can also be electrically connected to the contact portion 123. At this time, the second elastic member 270 (shaded but not shown) is also deformed by the torsion.

Please also refer to Figures 11C and 11D. When the end cap structure 201 is detached from the lamp holder, the pressing portion 233 is no longer subjected to an external force, and the first switch unit 230 can be acted upon by the restoring force (ejection force F3) generated by the deformation of the first elastic member 260. , automatically away from the limit position and return to the original position of the 11D picture; at the same time, as shown in FIG. 11D, the positioning guide 2341 is away from the limit position, and the convex portion 2421 is not in the rotation direction R1 due to the stepped opening 2343. Further limited, the stepped opening 2343 can release the convex portion 2421 in the rotational direction R1. The rotatable body 243 automatically returns to the restoring force (ie, the restoring force T2) generated by the deformation of the second elastic member 270, And the conductive elastic piece 250 is no longer electrically contacted by the contact portion 123.

It can be seen from the above description that the lamp tube 100 and the end cover structures 11, 12, 101 and 201 disclosed in the above embodiments of the present invention are provided with a double switch structure (ie, a first switch unit and a second switch) on the end cover structure. unit). When the end cap structure is mounted on the lamp holder, the first switch unit is moved to the limit position, and then the second switch unit is switched to the open state through the tool or manually to enable the lamp to receive the external power source; When the cover structure is removed from the base, the dual switch structure is automatically reset to shut off the external power supply. In this way, the risk of electric shock caused by accidental contact when the lamp is mounted on the lamp holder can be avoided; at the same time, this type of lamp can also meet various safety regulations.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

101‧‧‧End cap structure

105‧‧‧Signal wire

110‧‧‧First housing

112‧‧‧ first side

113‧‧‧ accommodating holes

114‧‧‧ Guide hole

115‧‧‧ Groove

116‧‧‧ card slot

120‧‧‧Electrical connection

121‧‧‧Electric Reception Department

122‧‧‧Fixed Department

123‧‧‧Contacts

130‧‧‧First switch unit

131‧‧‧Exposed Department

132‧‧‧ Guidance Department

133‧‧‧ Pressing Department

134‧‧‧First Limitation Department

140‧‧‧Second switch unit

141‧‧‧Touching Department

142‧‧‧Second Limitation

150‧‧‧conductive shrapnel

151‧‧‧Electric touch

152‧‧‧Clock Department

153‧‧‧shims

160‧‧‧First elastic parts

170‧‧‧Second elastic parts

180‧‧‧second housing

181‧‧‧ fixed column

182‧‧‧ second side

183‧‧‧Knocking ring

184‧‧‧ board

191‧‧‧ bottom

D1‧‧‧ radial direction

Claims (20)

An end cap structure for a lamp tube, comprising: an end cover housing comprising a bottom portion and a side portion, the side portion being connected and surrounding the bottom portion, and the bottom portion and the side portion forming an accommodation space; An electrical connection portion is disposed on the bottom portion for receiving an external power source, a portion of the electrical connection portion is located outside the bottom portion, and a portion of the electrical connection portion is located in the accommodating space; a first switch unit is movably disposed on the On the bottom part, a portion of the first switch unit is located outside the bottom portion, and a portion of the first switch unit is located in the accommodating space. Pressing the first switch unit can move the first switch unit from an original position to a limit position. a second switch unit is movably disposed on the side portion; and a conductive elastic piece is disposed in the accommodating space and interlocked with the second switch unit, and the conductive elastic piece is spaced apart from the electrical connection portion The electrically conductive elastic piece is electrically connected to the electrical connection portion in the accommodating space by moving the second switching unit relative to the side portion when the first switching unit is located at the limiting position A first switching unit and the second stop of the switching unit. The end cap structure of claim 1, further comprising: a first elastic member located under the first switch unit and providing an ejection force of the first switch unit; and a second elastic member connected The second switch unit provides the second switch a first resetting force; wherein, when the first switching unit is unstressed in the limiting position, the first switching unit automatically moves away from the limiting position by the ejection force and returns to the original position, and the first The second switch unit electrically isolates the conductive elastic piece from the electrical connection portion by the resetting force. The end cap structure of claim 2, wherein the second elastic member is a compression spring or a torsion spring. The end cap structure of claim 2, wherein the first switch unit comprises: a pressing portion partially protruding outside the bottom for pressing; and a first limiting portion connecting the pressing portion, And being disposed in the accommodating space; and the second switch unit includes: a touch portion exposed from the side portion; and a second limiting portion connected to the touch portion and disposed in the accommodating space; When the conductive elastic piece is electrically connected to the electrical connection portion, the first limiting portion stops the second limiting portion; when the first switching unit returns to the original position from the limiting position, the first A limiting portion releases the second limiting portion. The end cap structure of claim 4, wherein the second switch unit moves linearly in a radial direction perpendicular to the side portion. The end cap structure of claim 5, wherein the first limiting portion comprises a limiting cylinder, the second limiting portion comprises a hook, the hook is used for hooking the limiting post a body such that the limiting cylinder stops the hook in the radial direction. The end cap structure of claim 6, wherein the limiting cylinder has a limit length in a direction perpendicular to the bottom portion, and when the pressing portion is subjected to a force, the limit length is sufficient to make the limit The cylinder is in the limiting position, and when the pressing portion is unstressed, the limiting length is sufficient to keep the limiting cylinder away from the limiting position. The end cap structure of claim 7, further comprising a stopper and a third elastic member, the stopper being movably disposed under the limiting cylinder, wherein the third elastic member is connected a stopper for moving the stopper to a stop position, the stopper stopping the movement of the hook in the radial direction when the stopper is in the stop position. The end cap structure of claim 5, wherein the side portion has a groove, the touch portion includes a pressing button, and the pressing button is movably received in the groove along the radial direction, When the first limiting portion is located at the limiting position, the conductive elastic piece is electrically connected to the electrical connection portion by pressing the pressing button. The end cap structure of claim 4, wherein the second switch unit rotates in a rotational direction with the side portion as a circumference. The end cap structure of claim 10, wherein the second switch unit further comprises a rotatable body, the conductive elastic piece is disposed on the rotatable body, and the rotatable body is disposed in the rotating direction The conductive elastic piece is electrically connected to the electrical connection portion by rotating the rotatable body when the first limiting portion is located at the limiting position. The end cap structure of claim 11, wherein the side portion has a sliding portion, the trigger portion includes a recessed portion, the recessed portion is disposed on the rotatable body, and the recessed portion is along the rotation The direction is slidably received in the sliding portion. The end cap structure of claim 11, wherein the first limiting portion comprises a positioning guiding groove, and the second limiting portion comprises a convex portion connected to the rotatable body, the positioning The guiding groove extends in a direction perpendicular to the bottom, and the positioning guiding groove has a shape corresponding to the convex portion to stop the convex portion in the rotating direction. The end cap structure of claim 13, wherein the first switch unit further comprises an extension post, the extension post is perpendicular to the bottom portion of the positioning guide The direction extends, and a stepped opening is formed between the positioning guide and the extension post, and the stepped opening is for the positioning guide to release the convex portion in the rotating direction. The end cap structure of claim 14, wherein the rotatable body has a through portion extending through the rotatable body in the rotational direction, and the positioning guide and the extension post pass through the The through portion is disposed, and the protrusion is connected to the rotatable body by an arm and disposed in the through portion. The end cap structure of claim 1, wherein one end of the conductive elastic piece is electrically connected to one of the light bars of the lamp tube, and the other end extends toward the electrical connection portion and is spaced from the electrical connection portion. distance. The end cap structure of claim 1, wherein the electrical connection portion comprises two electrical terminals. A lamp tube comprising: a tube body having a first end portion and a second end portion; the end cap structure according to any one of claims 1-17, disposed at the first end portion and the And a light strip is disposed in the tube body, and one side of the light strip is electrically connected to the conductive elastic piece of the end cap structure. The lamp tube of claim 18, wherein the first end portion and the second end portion are connected to a power supply circuit, and when the conductive elastic piece is electrically connected to the electrical connection portion, the light tube is turned on In the power supply circuit, the external power source is received, and when the conductive elastic piece is electrically isolated from the electrical connection portion, the light tube is not turned on in the power supply circuit to cut off the external power supply. The lamp of claim 19, wherein the power supply circuit is a double-ended AC circuit.