Indoor LED display screen

Abstract

The indoor LED display screen comprises a plug-in lamp panel and a side plug-in power supply box, the plug-in lamp panel is detachably inserted in the side plug-in power supply box, the plug-in lamp panel comprises a plurality of LED light sources and a first contact part, the first contact part is arranged at the end of one side of the plug-in lamp panel, and the first contact part is arranged at the end of the other side of the plug-in lamp panel. The first contact part comprises a plurality of first contacts, the side plug power supply box comprises a plug-in part and a box body part, the plug-in part is connected to the box body part, the plug-in part comprises a plug-in groove and a second contact part, the second contact part is arranged in the plug-in groove, the second contact part comprises a plurality of second contacts, and the second contacts are arranged in the plug-in groove. The box body part comprises a first contact part and a second contact part, the second contact part corresponds to the first contact part, the box body part comprises a power supply module and a control module, the power supply module and the control module are arranged in the box body part, and the power supply module and the control module are respectively connected with the second contact part.

Description

Technical Field

[0001] The invention relates to an LED display screen, in particular to an indoor LED display screen comprising a plug-in light panel and a side-plug power supply box, wherein the plug-in light panel is detachably plugged into the side-plug power supply box. Background Art

[0002] As we all know, LED display screens made with LED as light source have been widely used by people. LED display screen is a display method that controls semiconductor light emitting diodes. It is generally composed of many light emitting diodes. When working, it relies on the on and off of LED light source to display characters. In specific implementation, it can be used to display text, graphics, images, animations, market conditions, videos, video signals and other information. LED display screens can be used not only in indoor environments but also in outdoor environments. They have advantages that projectors, TV walls and LCD screens cannot match. In practice, it is often necessary to set up a large LED display screen in a specific location to meet people's use requirements. In this case, large LED display screens are assembled from several LED display boxes. In specific applications, several LED display boxes work together with the support of auxiliary hardware equipment and software programs to achieve the purpose of displaying large graphic information.

[0003] like Figure 1 As shown, a traditional LED display box generally includes a box 1, a power box 2 and an LED light board 3, wherein the power box 2 is installed at the central position of the back of the box 1, the LED light board 3 is installed at the front end of the box 1, and the power box 2 is connected to the central position of the back of the LED light board 3. In practice, the power box 2 is provided with a power module, a control module, etc., and the power box 2 provides the power and control signals required for the LED light board 3 to work.

[0004] However, the above-mentioned traditional LED display box still has the following disadvantages when it is used, which are now described as follows.

[0005] The main weight of the traditional LED display cabinet is concentrated on the cabinet 1, and the material cost and production cost of the cabinet 1 account for the vast majority of the overall cost of the product. Limited by the traditional product design concept, the cabinet 1 is an indispensable component of the product. This design method will inevitably greatly increase the production cost of the product.

[0006] In addition, as the distance between the LED light source points on the LED light board gradually decreases, the design method of connecting the power box 2 to the center of the back of the LED light board 3 will significantly increase the local operating temperature of the LED light board 3. This design method will greatly reduce the service life of the product and increase the product failure rate. As mentioned above, this is the main disadvantage of the traditional technology. Summary of the invention

[0007] The technical solution adopted by the present invention is: an indoor LED display screen, which includes a plug-in light board and a side-plug power box, the plug-in light board is detachably plugged into the side-plug power box, the plug-in light board includes a plurality of LED light sources and a first contact part, wherein the plurality of LED light sources are arranged on the plug-in light board, the first contact part is arranged on one side end of the plug-in light board, the plurality of LED light sources are respectively connected to the first contact part, and the first contact part includes a plurality of first contacts.

[0008] The side-plug power box includes a plug-in part and a box body part, the plug-in part is connected to the box body part, the plug-in part includes a plug-in slot and a second contact part, the second contact part is arranged in the plug-in slot, the second contact part includes a plurality of second contacts, and the second contact part corresponds to the first contact part.

[0009] The box body portion includes a power module and a control module, the power module and the control module are arranged in the box body portion, and the power module and the control module are respectively connected to the second contact portion.

[0010] The plug-in light board has a non-working state and a working state. When the plug-in light board is in the non-working state, the plug-in light board and the side plug-in power box are independent of each other. When the plug-in light board is in the working state, the plug-in light board is plugged into the plug-in slot of the side plug-in power box, and the side plug-in power box is located at one side end of the plug-in light board. The several first contacts of the plug-in light board correspond one-to-one with the several second contacts of the side plug-in power box and are in contact connection. The power module of the side plug-in power box provides power supply for the plug-in light board, and the control module of the side plug-in power box transmits a control signal to the plug-in light board and controls the working state of the plug-in light board.

[0011] The beneficial effects of the present invention are as follows: the present invention completely abandons the structural design of the traditional LED display box, and designs the power box as a side-plug power box, so that when the light board is connected to the power box, the side-plug power box is located at one side end of the plug-in light board, and at the same time, the power module and the control module are all integrated in the side-plug power box, and centralized heat dissipation is performed, and the working heat source of the light board is completely separated from the working heat source of the power box, which can significantly improve the overall heat dissipation performance of the product and greatly reduce the production cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the prior art.

[0013] Figure 2 It is a three-dimensional schematic diagram of the present invention.

[0014] Figure 3 It is a rear view of the plug-in light panel of the present invention.

[0015] Figure 4 It is a schematic diagram of the plug-in light panel of the present invention.

[0016] Figure 5 It is a schematic diagram of the plug-in outer frame of the present invention.

[0017] Figure 6 It is a schematic diagram of the plug-in part of the present invention in an open and inserted state.

[0018] Figure 7 It is a schematic diagram of the plug-in part of the present invention in a closed and fixed state.

[0019] Figure 8 It is a schematic diagram of the power module and the control module of the present invention.

[0020] Fig. 9 It is a schematic diagram of the working principle of the present invention. DETAILED DESCRIPTION

[0021] like Figures 2 to 9 As shown, an indoor LED display screen includes a plug-in light board 10 and a side-plug power box 100, wherein the plug-in light board 10 is detachably plugged into the side-plug power box 100, and the plug-in light board 10 includes a plurality of LED light sources 11 and a first contact portion 12, wherein the plurality of LED light sources 11 are arranged on the plug-in light board 10, and the first contact portion 12 is arranged at one side end of the plug-in light board 10, and the plurality of LED light sources 11 are respectively connected to the first contact portion 12, and the first contact portion 12 includes a plurality of first contacts 13.

[0022] The side-plug power box 100 includes a plug-in part 200 and a box body part 300, the plug-in part 200 is connected to the box body part 300, the plug-in part 200 includes a plug-in slot 210 and a second contact part 220, the second contact part 220 is arranged in the plug-in slot 210, the second contact part 220 includes a plurality of second contacts 221, and the second contact part 220 corresponds to the first contact part 12.

[0023] The box body 300 includes a power module 310 and a control module 320 . The power module 310 and the control module 320 are disposed in the box body 300 . The power module 310 and the control module 320 are connected to the second contact part 220 , respectively.

[0024] The plug-in light board 10 has a non-working state and a working state. When the plug-in light board 10 is in the non-working state, the plug-in light board 10 and the side-plug power box 100 are independent of each other.

[0025] When the plug-in light board 10 is in the working state, the plug-in light board 10 is inserted into the plug-in slot 210 of the side plug-in power box 100, and the side plug-in power box 100 is located at one side end of the plug-in light board 10. The several first contacts 13 of the plug-in light board 10 correspond one-to-one to the several second contacts 221 of the side plug-in power box 100 and are in contact and connected. The power module 310 of the side plug-in power box 100 provides power supply for the plug-in light board 10, and the control module 320 of the side plug-in power box 100 transmits the control signal to the plug-in light board 10 and controls the working state of the plug-in light board 10.

[0026] In practice, the plug-in lamp board 10 has a lamp board front side 14 and a lamp board back side 15, a plurality of the LED light sources 11 are arranged on the lamp board front side 14, the first contact portion 12 is arranged at one side end portion of the lamp board back side 15, the plug-in lamp board 10 is inserted into the plug-in slot 210 of the side plug power box 100, and the box body portion 300 is located below the lamp board back side 15.

[0027] That is to say, when the plug-in light board 10 is inserted into the plug-in slot 210 of the side plug-in power box 100 , the box body part 300 is located on the back of the plug-in light board 10 , so at this moment, the box body part 300 will not block the light emission of the plug-in light board 10 .

[0028] The design idea of ​​the present invention is to completely abandon the structural design of the traditional LED display box, and design the power box as a side-plug power box 100. When the light board is connected to the power box, the side-plug power box 100 is located at one side end of the plug-in light board 10. At the same time, the power module and the control module are all integrated in the side-plug power box 100, and centralized heat dissipation is performed, and the working heat source of the light board is completely separated from the working heat source of the power box, which can significantly improve the overall heat dissipation performance of the product and greatly reduce the production cost of the product.

[0029] There are multiple implementation methods that can realize the working principle of the present invention during specific implementation, which are now described in detail as follows.

[0030] During the specific implementation, the plug-in lamp board 10 also includes a plug-in outer frame 20, which includes a top frame 21 and two side frames 22. The first contact portion 12 is arranged at the bottom end of the back side 15 of the plug-in lamp board 10, the top frame 21 is arranged at the top of the plug-in lamp board 10, and the two side frames 22 are respectively arranged on both sides of the plug-in lamp board 10. The bottoms of the two side frames 22 are respectively provided with plug-in boards 30, and plug-in ribs 31 are arranged on the plug-in boards 30. Corresponding to the plug-in ribs 31, slots 32 are respectively arranged on both sides of the plug-in portion 200, and the plug-in ribs 31 are inserted into the slots 32, so that the plug-in lamp board 10 can be fixedly inserted in the plug-in slot 210 of the side plug power box 100.

[0031] During the specific implementation, a glue layer is provided on the back side 15 of the lamp board. The glue layer can firstly protect the circuit board solder joints, chips and other structures on the back side 15 of the lamp board. Secondly, the glue layer can also play a role in heat conduction and heat dissipation of the plug-in lamp board 10. The glue layer can be set as a thermally conductive and heat-dissipating glue layer, etc., which belongs to the prior art and will not be described again here.

[0032] In a specific implementation, the plug-in part 200 further includes a fixed base 410 , a flip table 420 and a flip connector 430 , wherein the flip connector 430 is connected between the fixed base 410 and the flip table 420 , and the flip table 420 can be flipped relative to the fixed base 410 .

[0033] The fixed base 410 is connected to the box body 300 . The fixed base 410 includes a base vertical surface 411 and a bottom plate 412 . The base vertical surface 411 is connected to the top of the bottom plate 412 .

[0034] The flip platform 420 is hinged on the base plate 412 through the flip connector 430. The flip platform 420 has an inner side surface 421 of the flip platform. The plug-in slot 210 of the plug-in part 200 is formed by means of the base vertical surface 411, the inner side surface 421 of the flip platform and the bottom plate top surface 413 of the bottom plate 412. The slot 32 is located at both ends of the flip platform 420.

[0035] In practice, the first contact portion 12 can be arranged on the bottom end face of the plug-in lamp board 10, and corresponding to the first contact portion 12, the second contact portion 220 can be arranged on the bottom face of the plug-in slot 210. When the plug-in lamp board 10 is in the working state, the several first contacts 13 of the plug-in lamp board 10 correspond one-to-one with the several second contacts 221 of the side plug-in power box 100 and are in contact and connected. However, this direct plug-in method is prone to cause wear and damage to the corresponding structure.

[0036] The plug-in part 200 has an open insertion state and a closed fixed state. When the plug-in part 200 is in the open insertion state, the flip table 420 flips reversely relative to the fixed base 410, and an open tilt angle 440 is formed between the flip table 420 and the fixed base 410. The plug-in lamp panel 10 is plugged into the flip table 420 through the insertion rib 31 and the slot 32.

[0037] When the plug-in part 200 is in the closed and fixed state, the flip platform 420 flips forward relative to the fixed base 410, and the open tilt angle 440 approaches zero degree, so that the plug-in light board 10 can be fixedly plugged into the plug-in slot 210 of the side plug power box 100, and the several first contacts 13 of the plug-in light board 10 correspond one-to-one with the several second contacts 221 of the side plug power box 100 and are in contact and connected.

[0038] In order to achieve a smooth transition of the plug-in part 200 between the open insertion state and the closed fixed state, the following preferred implementation is particularly provided.

[0039] The plug-in part 200 also includes a contact linkage 500, which is arranged between the fixed base 410 and the flip platform 420. The contact linkage 500 includes an arc rack 510, a conversion gear set 520 and a transmission rack 530, wherein the top of the arc rack 510 is fixedly arranged on the flip platform 420, and the conversion gear set 520 is pivotally connected to the fixed base 410. The conversion gear set 520 includes an incomplete gear 521 and a full gear 522, and the incomplete gear 521 is coaxially connected to the full gear 522, wherein the incomplete gear 521 is meshed with the arc rack 510, and the full gear 522 is meshed with the transmission rack 530.

[0040] A base 531 is provided on the transmission rack 530, and several second contacts 221 are provided on the base 531. Each of the second contacts 221 includes a fixing plate 532, and the fixing plate 532 is fixedly provided on the base 531. The cable connection line 534 is connected between several of the fixing plates 532 and the power module 310 and the control module 320 of the box body part 300.

[0041] Each of the fixing plates 532 is connected to a contact contactor 533, which corresponds to the first contact 13. The contact contactor 533 can be a spring clip or a power pin or other structure. In practice, several of the second contacts 221 can also be divided into several spring clips and several power pins. Several of the power pins are connected to the power module 310 through a flat cable connection line 534 to make the power transmission more stable and safe. Corresponding to the power pin, several parts of the first contacts 13 can also be set to a socket structure, and several of the spring clips are connected to the control module 320 through a flat cable connection line 534. The above-mentioned pin and socket technologies belong to the prior art and are no longer repeated here.

[0042] A functional opening 414 is defined on the base vertical surface 411 , and a plurality of the second contacts 221 are disposed in the functional opening 414 .

[0043] When the plug-in part 200 is in the open insertion state, the flip table 420 flips reversely relative to the fixed base 410, and the flip table 420 drives the arc rack 510 to move upward, and drives the full gear 522 to rotate through the incomplete gear 521, and the full gear 522 drives the transmission rack 530 to move backward, and the transmission rack 530 drives the plurality of second contacts 221 to move backward and retract into the functional port 414.

[0044] When the plug-in part 200 is in the closed and fixed state, the flip table 420 flips forward relative to the fixed base 410, and the flip table 420 drives the arc rack 510 to move downward, and drives the full gear 522 to rotate through the incomplete gear 521, and the full gear 522 drives the transmission rack 530 to move forward, and the transmission rack 530 drives several second contacts 221 to protrude from the functional port 414, so that the several first contacts 13 of the plug-in lamp panel 10 and the several second contacts 221 of the side plug-in power box 100 correspond one by one and are in contact and connected.

[0045] The present invention can facilitate the user to insert the plug-in lamp board 10 through the above structure, and complete the contact connection while inserting. In practice, the flip connector 430 can be designed as a hinge or other similar structure, and the spring can be designed as an elastic arc plate structure to facilitate the contact between the contacts.

[0046] like Figures 2 to 9As shown, a side-plug power box 100 of an LED light panel includes a plug-in part 200 and a box body part 300, the plug-in part 200 is connected to the box body part 300, the plug-in part 200 includes a plug-in slot 210 and a second contact part 220, the second contact part 220 is arranged in the plug-in slot 210, the second contact part 220 includes a plurality of second contacts 221, the box body part 300 includes a power module 310 and a control module 320, the power module 310 and the control module 320 are arranged in the box body part 300, and the power module 310 and the control module 320 are respectively connected to the second contact part 220.

[0047] The plug-in part 200 further includes a fixed base 410 , a flip table 420 and a flip connector 430 , wherein the flip connector 430 is connected between the fixed base 410 and the flip table 420 , and the flip table 420 can be flipped relative to the fixed base 410 .

[0048] The fixed base 410 is connected to the box body part 300, and the fixed base 410 includes a base vertical surface 411 and a bottom plate 412. The base vertical surface 411 is connected above the bottom plate 412. The flip table 420 is hinged on the bottom plate 412 through the flip connector 430. The flip table 420 has an inner side surface 421 of the flip table. The plug-in slot 210 of the plug-in part 200 is formed by means of the base vertical surface 411, the inner side surface 421 of the flip table and the bottom plate top surface 413 of the bottom plate 412.

[0049] The plug-in part 200 has an open insertion state and a closed fixed state. When the plug-in part 200 is in the open insertion state, the flip table 420 flips reversely relative to the fixed base 410, and an open tilt angle 440 is formed between the flip table 420 and the fixed base 410. When the plug-in part 200 is in the closed fixed state, the flip table 420 flips forward relative to the fixed base 410.

[0050] The plug-in part 200 also includes a contact linkage 500, which is arranged between the fixed base 410 and the flip platform 420. The contact linkage 500 includes an arc rack 510, a conversion gear set 520 and a transmission rack 530, wherein the top of the arc rack 510 is fixedly arranged on the flip platform 420, and the conversion gear set 520 is pivotally connected to the fixed base 410. The conversion gear set 520 includes an incomplete gear 521 and a full gear 522, and the incomplete gear 521 is coaxially connected to the full gear 522, wherein the incomplete gear 521 is meshed with the arc rack 510, and the full gear 522 is meshed with the transmission rack 530.

[0051] A base 531 is provided on the transmission rack 530, and several second contacts 221 are provided on the base 531. Each of the second contacts 221 includes a fixing plate 532, and the fixing plate 532 is fixedly provided on the base 531. A wiring connection line 534 is connected between several fixing plates 532 and the power module 310 and the control module 320 of the box body 300. Each of the fixing plates 532 is connected to a contact contactor 533. A functional port 414 is opened on the vertical surface 411 of the base, and several second contacts 221 are provided in the functional port 414.

[0052] When the plug-in part 200 is in the open insertion state, the flip table 420 flips reversely relative to the fixed base 410, and the flip table 420 drives the arc rack 510 to move upward, and drives the full gear 522 to rotate through the incomplete gear 521, and the full gear 522 drives the transmission rack 530 to move backward, and the transmission rack 530 drives several second contacts 221 to move backward and retract into the functional port 414. When the plug-in part 200 is in the closed fixed state, the flip table 420 flips forward relative to the fixed base 410, and the flip table 420 drives the arc rack 510 to move downward, and drives the full gear 522 to rotate through the incomplete gear 521, and the full gear 522 drives the transmission rack 530 to move forward, and the transmission rack 530 drives several second contacts 221 to protrude from the functional port 414.

[0053] When the side plug power box 100 is in use, the plug-in light board 10 is detachably plugged into the side plug power box 100. The plug-in light board 10 includes a plurality of LED light sources 11 and a first contact portion 12. The first contact portion 12 is arranged at one end of the plug-in light board 10. The first contact portion 12 includes a plurality of first contacts 13. In practice, the plug-in light board 10 also includes a plug-in outer frame 20. The plug-in outer frame 20 includes a top frame 21 and two side frames 22. The first contact portion 12 is arranged at the plug-in outer frame 20. At the bottom end of the back side 15 of the lamp board 10, the top frame 21 is arranged on the top of the plug-in lamp board 10, and the two side frames 22 are respectively arranged on both sides of the plug-in lamp board 10. The bottoms of the two side frames 22 are respectively provided with plug-in boards 30, and the plug-in boards 30 are provided with plug-in ribs 31. Corresponding to the plug-in ribs 31, slots 32 are respectively arranged on both sides of the plug-in part 200, and the plug-in ribs 31 are plugged into the slots 32, so that the plug-in lamp board 10 can be fixedly plugged into the plug-in slot 210 of the side plug power box 100.

Claims

1. An indoor LED display screen, characterized in that: The invention comprises a plug-in light board and a side plug-in power box, wherein the plug-in light board is detachably plugged into the side plug-in power box, and the plug-in light board comprises a plurality of LED light sources and a first contact portion, wherein the plurality of LED light sources are arranged on the plug-in light board, the first contact portion is arranged on one side end of the plug-in light board, the plurality of LED light sources are respectively connected to the first contact portion, and the first contact portion comprises a plurality of first contacts, The side-plug power supply box includes a plug-in part and a box body part, the plug-in part is connected to the box body part, the plug-in part includes a plug-in slot and a second contact part, the second contact part is arranged in the plug-in slot, the second contact part includes a plurality of second contacts, and the second contact part corresponds to the first contact part. The box body portion includes a power module and a control module, the power module and the control module are arranged in the box body portion, and the power module and the control module are respectively connected to the second contact portion. The plug-in light board has a non-working state and a working state. When the plug-in light board is in the non-working state, the plug-in light board and the side plug-in power box are independent of each other. When the plug-in light board is in the working state, the plug-in light board is plugged into the plug-in slot of the side plug-in power box, and the side plug-in power box is located at one side end of the plug-in light board. The several first contacts of the plug-in light board correspond one-to-one with the several second contacts of the side plug-in power box and are in contact connection. The power module of the side plug-in power box provides power supply for the plug-in light board, and the control module of the side plug-in power box transmits a control signal to the plug-in light board and controls the working state of the plug-in light board.

2. An indoor LED display screen as claimed in claim 1, characterized in that: The plug-in lamp board has a front side and a back side, and several LED light sources are arranged on the front side of the lamp board. The first contact part is arranged at a side end of the back side of the lamp board. The plug-in lamp board is plugged into the plug-in slot of the side plug power box, and the box body part is located below the back side of the lamp board.

3. An indoor LED display screen as claimed in claim 1, characterized in that: The plug-in lamp board also includes a plug-in outer frame, which includes a top frame and two side frames. The first contact part is arranged at the bottom end of the back side of the plug-in lamp board, the top frame is arranged at the top of the plug-in lamp board, and the two side frames are respectively arranged on both sides of the plug-in lamp board. The bottoms of the two side frames are respectively provided with plug-in boards, and the plug-in boards are provided with plug-in ribs. Corresponding to the plug-in ribs, slots are respectively arranged on both sides of the plug-in part, and the plug-in ribs are plugged into the slots, so that the plug-in lamp board can be fixedly plugged into the plug-in slot of the side plug power box.

4. An indoor LED display screen as claimed in claim 3, characterized in that: A glue layer is arranged on the back side of the lamp panel.

5. An indoor LED display screen as claimed in claim 3, characterized in that: The plug-in part also includes a fixed base, a flip table and a flip connector, wherein the flip connector is connected between the fixed base and the flip table, and the flip table can be flipped relative to the fixed base. The fixed base is connected to the box body, and includes a base vertical surface and a bottom plate. The base vertical surface is connected above the bottom plate. The flip table is hinged on the bottom plate through the flip connector. The flip table has an inner side of the flip table. The plug-in slot of the plug-in part is formed by the vertical surface of the base, the inner side of the flip table and the top surface of the bottom plate. The slot is located at both ends of the flip table. The plug-in part has an open insertion state and a closed fixed state. When the plug-in part is in the open insertion state, the flip table flips reversely relative to the fixed base and forms an open tilt angle between the flip table and the fixed base. The plug-in lamp panel is plugged into the flip table through the insertion rib and the slot. When the plug-in part is in the closed fixed state, the flip table flips forward relative to the fixed base, so that the plug-in lamp panel can be fixedly inserted in the plug-in slot of the side plug power box. The first contacts of the plug-in lamp panel correspond one-to-one with the second contacts of the side plug power box and are in contact and connected.

6. An indoor LED display screen as claimed in claim 5, characterized in that: The plug-in part also includes a contact linkage, which is arranged between the fixed base and the flip platform. The contact linkage includes an arc rack, a conversion gear set and a transmission rack, wherein the top of the arc rack is fixedly arranged on the flip platform, the conversion gear set is pivotally connected to the fixed base, the conversion gear set includes an incomplete gear and a full gear, the incomplete gear is coaxially connected to the full gear, wherein the incomplete gear is meshed with the arc rack, and the full gear is meshed with the transmission rack.

7. An indoor LED display screen as claimed in claim 6, characterized in that: A base is provided on the transmission rack, and several second contacts are provided on the base, each of the second contacts includes a fixing plate, and the fixing plate is fixedly provided on the base, and the wiring connection line is connected between several of the fixing plates and the power module and the control module of the box body, and each of the fixing plates is connected with a contact contactor, which corresponds to the first contact, and a functional port is opened on the vertical surface of the base, and several second contacts are provided in the functional port.

8. An indoor LED display screen as claimed in claim 7, characterized in that: When the plug-in part is in the open insertion state, the flip table flips back relative to the fixed base, the flip table drives the arc rack to move upward, the incomplete gear drives the full gear to rotate, the full gear drives the transmission rack to move backward, and the transmission rack drives the plurality of second contacts to move backward and retract into the functional opening. When the plug-in part is in the closed and fixed state, the flip table flips forward relative to the fixed base, the flip table drives the arc rack to move downward, and the incomplete gear drives the full gear to rotate, the full gear drives the transmission rack to move forward, and the transmission rack drives several second contacts to protrude from the functional port, so that the several first contacts of the plug-in lamp panel correspond one by one to the several second contacts of the side plug-in power box and are in contact and connected.

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