Subway power distribution cabinet maintenance lighting device

Abstract

The invention relates to the technical field of lighting devices, and discloses a subway power distribution cabinet maintenance lighting device which comprises a hanging seat hung at the top in a power distribution cabinet, a fixed seat is movably hung at the bottom of the hanging seat, extension plates extending towards the inner wall of the power distribution cabinet are arranged at the two ends of the fixed seat, and each extension plate is rotationally connected with a balance plate. Each balance plate is slidably connected with a limiting sliding block, each limiting sliding block is fixedly connected with a first transverse rod, one end of each first transverse rod is movably connected with a damping shaft, the bottom of each damping shaft is fixedly connected with a second transverse rod, the interior of each second transverse rod is fixedly connected with a lamp tube, and the two ends of the bottom of each second transverse rod are connected with fixing plates in a swinging mode. According to the subway power distribution cabinet maintenance lighting device, the eyes of a maintainer cannot be directly irradiated by light beams diffused in the cabinet body, and the stimulation feeling cannot be affected when the eyes of the maintainer face the soft light area S1.

Description

Technical Field

[0001] The invention relates to the technical field of lighting devices, and in particular to a lighting device for maintenance of a subway power distribution cabinet. Background Art

[0002] The display device inside the power distribution cabinet can be regarded as two types of lamps. The first type is installed on each switch. Its functions are as follows: 1. Current transformer, mainly used to detect the current of the primary circuit, and provide secondary current signals to relay protection circuits, monitoring instruments, etc. 2. Grounding switch, mainly used for protective grounding after the power is off in the primary main circuit system of the cabinet, and it must be interlocked with the circuit breaker in the cabinet to ensure that the primary main circuit in the cabinet is reliably grounded during the cabinet fault inspection and other processing to ensure the safety of the personnel. 3. Lightning arrester, mainly used to protect the primary main circuit in the cabinet to avoid damage to the components in the cabinet due to system overvoltage caused by lightning. 4. Live display, mainly used to detect high voltage in the cabinet, display the existence of high voltage, and avoid accidents caused by misjudgment.

[0003] The second type is lighting, which is only installed inside the power distribution equipment to provide lighting for maintenance. Generally, a heater is also equipped for auxiliary cooperation to prevent the inside of the power distribution equipment from getting damp, thereby damaging the electrical components inside the power distribution equipment. Although the existing lighting equipment can provide lighting during maintenance, the fixed LED lamp is installed on the side of the power distribution cabinet or on the top of the cabinet and on the cabinet door, so the luminous flux received per unit area on the front of the power distribution cabinet is small, the light intensity is insufficient, and the light distribution is uneven. The light intensity is the smallest in the center of the power distribution cabinet, and the closer to the light source at both ends of the power distribution cabinet, the greater the light intensity. Third, because the light source directly enters the human eye, it is very easy to cause glare to the maintenance personnel, and it is impossible to change the angle according to actual needs, which brings inconvenience to the maintenance personnel and has high limitations in use. Therefore, we propose a subway power distribution cabinet maintenance lighting device. Summary of the invention

[0004] The object of the present invention is to provide a maintenance lighting device for a subway power distribution cabinet to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a maintenance lighting device for a subway distribution cabinet, comprising a hanging seat suspended on the top of the distribution cabinet, a fixed seat movably suspended at the bottom of the hanging seat, extension plates extending toward the inner wall of the distribution cabinet at both ends of the fixed seat, a balance plate rotatably connected to each extension plate, a limiting slider slidably connected to each balance plate, a first cross bar fixedly connected to the limiting slider, a damping shaft movably connected to one end of each first cross bar, a second cross bar fixedly connected to the bottom of the damping shaft, a lamp tube fixedly connected to the inside of each second cross bar, a fixed plate swingably connected to both ends of the bottom of the second cross bar, a diffraction plate fixedly connected to one end between the two fixed plates, a plurality of diffraction ports provided on the diffraction plate, a filter fixedly connected to the other end between the two fixed plates, a second convex mirror provided in the middle between the two fixed plates, both ends of the second convex mirror extending out of the fixed plates, a second internal threaded turntable threadedly connected to one of the fixed plates.

[0006] Preferably, a mounting ear is fixedly installed on the outer side of each fixed plate, and a first convex mirror is slidably connected between the two mounting ears. The first convex mirror is located directly below the diffraction plate, and one end of the first convex mirror passes through one of the mounting ears. One end of the first convex mirror is threadedly connected to a second internally threaded turntable.

[0007] Preferably, one end of the second crossbar is rotatably connected to a dimming knob, one end of the lamp tube close to the dimming knob is fixedly connected to a conductive ring, the inner ring of the dimming knob is fixedly connected to a resistance wire, and the conductive ring and the resistance wire are in sliding contact and are in an electrically connected state.

[0008] Preferably, two soft light areas S are formed between the two end edges of the bottom of the second cross bar and the two ends of the diffraction plate. The light beam emitted from the lamp tube passes through the first convex mirror to form a high-display area X on the surface of the distribution cabinet. There are divergent areas Z with low brightness between the high-display area X and the two soft light areas S. After high-brightness light beams are formed in multiple places on the surface of the high-display area X, stripes with a brightness relatively darker than that of the divergent area Z are formed on the divergent area Z.

[0009] Preferably, each extension plate is rotatably connected to a base plate at the bottom, each base plate is slidably connected to a movable rod at both ends, a second rotating block is fixedly connected between the opposite surfaces of the two movable rods, a pair of first rotating blocks are fixedly connected between the opposite surfaces of the two balance plates, a plurality of external teeth are fixedly provided at the edges of the second rotating block and the first rotating block, the second rotating block and the first rotating block are meshed together through the external teeth, and a second spring is fixedly connected between each second rotating block and the base plate.

[0010] Preferably, a magnetic stone is fixedly connected to the top of one end of each balancing plate, and the magnetic stone and the distribution cabinet are magnetically connected together.

[0011] Preferably, a fixing rod is movably connected to the bottom of the hanging seat, the fixing rod and the fixing seat are fixedly connected, one end of the fixing rod extends into the hanging seat, and a mounting plate is fixedly connected to the surface of the fixing rod, a first spring is fixedly connected between the mounting plate and the hanging seat, a conductive plate is fixedly connected to the top of the mounting plate, and the conductive plate is in contact with the top of the distribution cabinet.

[0012] Preferably, the first cross bar and the second cross bar are both made of lightweight material, the combined length of the first cross bar and the second cross bar does not exceed the width of the power distribution cabinet, and the distance between the two limit sliders exceeds half the length of the first cross bar.

[0013] Preferably, a chamber is opened at one end of each of the first cross bars, and the damping shaft includes an upper half shaft fixed at one end of the first cross bar, a lower half shaft is rotatably connected to the bottom of one end of the first cross bar, the upper half shaft and the lower half shaft are electrically connected together, a first fixed groove is fixedly connected to the top of the outer ring of the lower half shaft, a first touch ball is equidistantly fixedly installed on the top of the first fixed groove, a second fixed groove is fixedly installed inside the chamber of the first cross bar, and a plurality of second touch balls are equidistantly suspended at the bottom of the second fixed groove, and when the lower half shaft rotates, the first touch ball and the second touch ball touch each other, and after pressure is generated, the two repel each other and produce rebound.

[0014] Preferably, an energized area is installed at the top of the first cross bar chamber, a conductive spring is fixedly connected to one side of the energized area, a limiting ring is fixedly connected to the bottom of the outer ring of the upper half shaft, a top ring is slidably connected between the limiting ring and the second fixed groove, a hinge block is installed on the top of the top ring, the hinge block and the first cross bar are rotatably connected together, a third spring is suspended at the top of the chamber of the first cross bar, the third spring is fixedly connected to one end of the hinge block, and the hinge block is electrically connected to the energized area through the conductive spring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The light beam of the present invention is refracted on the second convex mirror, so that the light beam is concentrated and multiple light beams are balanced, and then the light beam contacts the diffraction plate, wherein the diffraction plate has multiple diffraction ports, which will make the light beam generate highlight in the high-display area X during the process of emitting the diffraction plate, which is obviously brighter than the soft light area S1 after adjustment, wherein the high-display area X can be regarded as an area requiring maintenance, so that under the comparison of the two light sources of the high-display area X and the soft light area S1, the eyes of the maintenance personnel will not be directly illuminated by the light beams scattered inside the cabinet, and the maintenance personnel's eyes and the soft light area S1 will not affect the stimulation feeling when they look at each other;

[0017] When the two first rotating blocks rotate, the outer teeth on their edges and the outer teeth of the second rotating block generate sliding friction. The second rotating block and the base plate are key-connected, so that the second rotating block can move in the direction of its axis, so that the first rotating block and the second rotating block can play the role of positioning the two balance plates. Since the load at the bottom of the balance plate is relatively heavy, using only the damping shaft will cause the damping shaft carrying the balance plate to be located in a high-temperature operation state of the distribution cabinet, which is prone to failure. Therefore, during the design and installation, the outer teeth of the first rotating block and the second rotating block need to be deepened, so that the second spring can maintain stable operation in this state. The two balance plates are used to control the height of the first cross bar and the second cross bar inside the distribution cabinet, which provides convenience for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 3 This is a schematic diagram of the internal structure of the suspension base of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the present invention for connecting two balancing boards;

[0022] Figure 5 It is a schematic diagram of the structure of the present invention from another perspective;

[0023] Figure 6 This is a schematic diagram of the bottom structure of the second crossbar of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the second crossbar of the present invention;

[0025] Figure 8 For the present invention Figure 6 Left view of

[0026] Fig. 9 This is a schematic diagram showing the present invention as a whole located inside a power distribution cabinet;

[0027] Fig.10 It is a structural schematic diagram of the damping shaft of the present invention;

[0028] Fig.11 It is a schematic diagram of the internal structure of the damping shaft and the first cross bar of the present invention;

[0029] Fig.12 It is a schematic diagram of the structure of the first fixing groove, the first touch ball and the top ring of the present invention;

[0030] Fig.13 For the present invention Fig.11 Schematic diagram of plane perspective;

[0031] Fig.14 For the present invention Fig.13 The enlarged structural diagram at B in FIG.

[0032] In the figure: 1-suspension seat; 101-fixing rod; 102-first spring; 103-mounting plate; 104-conductive plate; 2-balance plate; 3-magnetic stone; 4-limiting slider; 5-first crossbar; 6-damping shaft; 7-second crossbar; 8-mounting ear; 9-first convex mirror; 10-diffraction plate; 11-fixing plate; 12-filter; 13-lamp tube; 14-base plate; 15-extension plate; 16-first rotating block; 17-fixing seat; 18-second rotating block; 19-movable rod; 20- The second spring; 21-the first internally threaded turntable; 22-the second internally threaded turntable; 23-the second convex mirror; 24-the dimming knob; 25-the resistance wire; 26-the conductive ring; S1-the soft light area; X-the high display area; Z-the divergent area; 27-the upper half axis; 28-the lower half axis; 29-the first fixed groove; 30-the first touch ball; 31-the limiting ring; 32-the top ring; 33-the third spring; 34-the power-on area; 35-the hinge block; 36-the conductive spring; 37-the second fixed groove; 38-the second touch ball. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-14The present invention provides a technical solution: a maintenance lighting device for a subway power distribution cabinet, comprising a hanging seat 1 suspended at the top of the power distribution cabinet, a fixed seat 17 movably suspended at the bottom of the hanging seat 1, and extension plates 15 extending toward the inner wall of the power distribution cabinet at both ends of the fixed seat 17, each extension plate 15 is rotatably connected to a balance plate 2, each balance plate 2 is slidably connected to a limit slider 4, a first cross bar 5 is fixedly connected to the limit slider 4, one end of each first cross bar 5 is movably connected to a damping shaft 6, a second cross bar 7 is fixedly connected to the bottom of the damping shaft 6, a lamp tube 13 is fixedly connected to the inside of each second cross bar 7, and a second Both ends of the bottom of the cross bar 7 are swingably connected to fixed plates 11, one end between the two fixed plates 11 is fixedly connected to a diffraction plate 10, and a plurality of diffraction ports are opened on the diffraction plate 10, and the other end between the two fixed plates 11 is fixedly connected to a filter 12, and a second convex mirror 23 is arranged in the middle between the two fixed plates 11, and both ends of the second convex mirror 23 extend out of the fixed plates 11, and a second internal thread turntable 21 is threadedly connected to one of the fixed plates 11; the distance between the two limit sliders 4 exceeds half the length of the first cross bar 5, so as to prevent the first cross bar 5 from colliding after excessive rotation, causing damage to the lamp tube 13.

[0035] A mounting ear 8 is fixedly installed on the outer side of each fixing plate 11, and a first convex mirror 9 is slidably connected between the two mounting ears 8. The first convex mirror 9 is located directly below the diffraction plate 10. One end of the first convex mirror 9 passes through one of the mounting ears 8, and one end of the first convex mirror 9 is threadedly connected to a second internally threaded turntable 22.

[0036] Two soft light areas S1 are formed between the two end edges of the bottom of the second cross bar 7 and the two ends of the diffraction plate 10. The light beam emitted from the lamp tube 13 passes through the first convex mirror 9 to form a high display area X on the surface of the distribution cabinet. There are divergent areas Z with low brightness between the high display area X and the two soft light areas S1. After high-brightness light beams are formed in multiple places on the surface of the high display area X, stripes with a brightness darker than that of the divergent area Z are formed on the divergent area Z.

[0037] First, the device manually installs the hanger 1 on the inner top of the distribution cabinet, such as the existing refrigerator door opening automatically forms a passage for the lamp tube 13, so that it automatically lights up when the cabinet door is opened. The specific circuit logic is not repeated. The lamp tube 13 is connected by a battery. When the electrical components inside the distribution cabinet are damaged, the lamp tube 13 is still in a passage state. When the lamp tube 13 emits light, the dimming knob 24 can be manually turned by hand, so that the dimming knob 24 drives the resistor wire 25 to rotate, so that the contact area between the resistor wire 25 and the conductive ring 26 is increased, so that the current in the passage becomes smaller, and the light becomes softer, as shown in the attached figure. Figure 8As shown, the bright light emitted by the lamp tube 13 passes through the bottom edge of the second cross bar 7 and the diffraction plate 10 to form a soft light area S1, and the soft light area S1 illuminates other areas inside the cabinet, so that the interior of the cabinet does not appear very dark. At the same time, the light emitted by the lamp tube 13 passes through the contact filter 12, so that the interference components of the light beam are reduced, and the contrast of the target to the background is improved, thereby improving the signal-to-noise ratio of the system. The light beam here is refracted by the second convex mirror 23, so that the light beam is concentrated and multiple light beams are in balance, and then the light beam and the diffraction plate 10 are refracted. The diffraction plate 10 is in contact with the light beam, wherein the diffraction plate 10 has multiple diffraction ports, each of which has a width of 0.01 mm, which will cause the light beam to generate a highlight in the high-display area X during the process of emitting the diffraction plate 10, which is obviously brighter than the soft light area S1 after adjustment. The high-display area X can be regarded as an area that needs maintenance. In this way, under the comparison of the two light sources of the high-display area X and the soft light area S1, the maintenance personnel's eyes will not be directly illuminated by the light beams scattered inside the cabinet, and the maintenance personnel's eyes and the soft light area S1 will not affect the stimulation feeling;

[0038] It is worth mentioning that due to too many diffraction ports, there are more high-visibility areas X, and at the same time, there are more darker stripes around them. However, since most of the light will not affect each other, the bright light beams in the high-visibility area X emitted by two adjacent diffraction ports can illuminate the darker stripes. Therefore, the light in the high-visibility area X is still in a relatively bright state, which can improve the speed of manual maintenance of equipment and improve the comfort of personnel during maintenance.

[0039] Two lamp tubes 13 are used to illuminate an area. When the two lamp tubes 13 are in a parallel state, the interference of the shadow part can be reduced, and the darkness of the umbra area produced by the hands of the personnel inside the equipment can be effectively reduced, and the surrounding brightness can be effectively improved.

[0040] In addition, by manually loosening the first internal thread turntable 21 and rotating the fixed plate 11 to rotate the diffraction plate 10, the high display area X can be effectively changed, so that the darker stripes around the high display area X move and are gradually replaced by the moving high display area X, so that the maintenance area is in a constant light state;

[0041] One end of the second cross bar 7 is rotatably connected to a dimming knob 24, and one end of the lamp tube 13 close to the dimming knob 24 is fixedly connected to a conductive ring 26. The inner circle of the dimming knob 24 is fixedly connected to a resistance wire 25. The conductive ring 26 and the resistance wire 25 are in sliding contact and are in an electrically connected state. In addition, the second internal threaded turntable 22 can be manually rotated to make the first convex mirror 9 slide up and down on the mounting ear 8. According to x=(2Lλ) / d, it can be concluded that the first convex mirror 9 can concentrate the light beam coming out of the diffraction plate 10 again to reduce the divergence of the light beam. The first convex mirror 9 can improve the quality of light beam concentration and improve the light beam stability in the high display area X.

[0042] A magnetic stone 3 is fixedly connected to the top of one end of each balance board 2, and the magnetic stone 3 and the distribution cabinet are magnetically connected together; a fixing rod 101 is movably connected to the bottom of the hanging seat 1, and the fixing rod 101 is fixedly connected to the fixing seat 17, one end of the fixing rod 101 extends into the hanging seat 1, and a mounting plate 103 is fixedly connected to its surface, a first spring 102 is fixedly connected between the mounting plate 103 and the hanging seat 1, and a conductive plate 104 is fixedly connected to the top of the mounting plate 103, and the conductive plate 104 contacts the top of the distribution cabinet, so that the equipment is always in a grounded state to prevent the lamp tube 13 from burning.

[0043] The bottom of each extension plate 15 is rotatably connected to a base plate 14, and both ends of each base plate 14 are slidably connected to a movable rod 19, and a second rotating block 18 is fixedly connected between the opposite surfaces of the two movable rods 19, and a pair of first rotating blocks 16 are fixedly connected between the opposite surfaces of the two balance plates 2. A plurality of external teeth are fixedly arranged at the edges of the second rotating block 18 and the first rotating block 16, and the second rotating block 18 and the first rotating block 16 are meshed together through the external teeth, and a second spring 20 is fixedly connected between each second rotating block 18 and the base plate 14; the initial position of the device is magnetically attracted by the magnetic stone 3 and the top metal shell in the distribution cabinet, the lamp tube 13 is located inside the second cross bar 7, the first cross bar 5 and the second cross bar 7 are overlapped up and down, and the limit slider 4 is located at either end of the balance plate 2, the first cross bar 5 and the second cross bar 7 and the balance plate 2 are in a vertical state from high to low, so that the entire device is in a storage state and does not occupy the space inside the distribution cabinet. When the device starts to be used, the two The balance board 2 separates the magnetic stone 3 from the power distribution cabinet. When the two balance boards 2 are taken and pulled down, the two first rotating blocks 16 on the same balance board 2 rotate at the same time. When the two first rotating blocks 16 rotate, the outer teeth on the edges and the outer teeth of the second rotating block 18 produce sliding friction. The second rotating block 18 and the base plate 14 are key-connected, so that the second rotating block 18 can move in the direction of its axis, so that the first rotating block 16 and the second rotating block 18 can play the role of positioning the two balance boards 2. Since the load at the bottom of the balance board 2 is relatively heavy, only using the damping shaft 6 will cause the damping shaft 6 to carry the balance board 2 in the power distribution cabinet. When operating at high temperature, it is easy to fail. Therefore, when designing and installing, it is also necessary to deepen the outer teeth of the first rotating block 16 and the second rotating block 18, so that the second spring 20 can work stably in this state. The two balance boards 2 are used to control the height of the first cross bar 5 and the second cross bar 7 inside the power distribution cabinet, which is convenient for maintenance.

[0044] When the device needs to illuminate the front of the cabinet door, Figure 5As shown, the first cross bar 5 and the second cross bar 7 can be moved to the upper side of the maintenance position by manually pulling the limit slider 4 at the bottom of the balance board 2, and then the first cross bar 5 can be manually rotated on the limit slider 4 to separate the first cross bar 5 and the lower side of the balance board 2, so as to facilitate irradiation of the front area of ​​the cabinet door. If the length of the first cross bar 5 does not reach the length of the electrical components of the distribution cabinet, the second cross bar 7 can be manually twisted to separate the first cross bar 5 and the second cross bar 7 again, thereby extending the irradiation area and allowing the lamp tube 13 to irradiate the area that needs to be irradiated. The first cross bar 5 and the second cross bar 7 are made of lightweight materials, and the damping shaft 6 is responsible for controlling the movement in the X and Y coordinate directions.

[0045] Furthermore, in order to improve the user experience of the lighting device, the lighting device adds an angle adjustment function in the above-mentioned method, and uses manual control to rotate the lighting lamp body horizontally or vertically. However, if the wires of the overall device are directly connected to the lamp tube 13, the rotation angle is limited by the internal connecting wires, and the rotation angle cannot exceed 360 degrees. Otherwise, the internal connecting wires will be easily broken due to continuous rotation. Therefore, the rotation angle of the lighting device structure in the above-mentioned method cannot exceed 360 degrees, and there is a blind spot for rotational illumination. Therefore, the damping shaft 6 used in the present solution includes a chamber at one end of each first cross bar 5, and the damping shaft 6 includes an upper half shaft 27 fixed to one end of the first cross bar 5, and the bottom of one end of the first cross bar 5 is rotatably connected to a lower half shaft 28, the upper half shaft 27 and the lower half shaft 28 are electrically connected together, and the top of the outer ring of the lower half shaft 28 is fixedly connected to a first fixing groove 29, and the top of the first fixing groove 29 A first touch ball 30 is fixedly installed at an equal distance in the upper part, a second fixed groove 37 is fixedly installed in the chamber of the first cross bar 5, and a plurality of second touch balls 38 are suspended at an equal distance at the bottom of the second fixed groove 37. When the lower half shaft 28 rotates, the first touch ball 30 and the second touch ball 38 touch each other, and after the pressure is generated, the two repel each other and produce rebound; an energizing area 34 is installed at the top of the chamber of the first cross bar 5, and a conductive spring piece 36 is fixedly connected to one side of the energizing area 34. A limiting ring 31 is fixedly connected to the bottom of the outer ring of the upper half shaft 27, and a top ring 32 is slidably connected between the limiting ring 31 and the second fixed groove 37, and a hinge block 35 is installed on the top of the top ring 32. The hinge block 35 and the first cross bar 5 are rotatably connected together. A third spring 33 is suspended at the top of the chamber of the first cross bar 5, and the third spring 33 is fixedly connected to one end of the hinge block 35. The hinge block 35 is electrically connected to the energizing area 34 through the conductive spring piece 36.

[0046] The lower half shaft 28 is fixedly connected to the second cross bar 7, and the wires in the second cross bar 7 and the first cross bar 5 are buried inside the second cross bar 7 and the first cross bar 5. When the second cross bar 7 is manually rotated, the second cross bar 7 will drive the first fixed groove 29 to rotate, and the rotation of the first fixed groove 29 causes the multiple first touch balls 30 to rotate simultaneously. Since the second touch balls 38 are fixed inside the first cross bar 5 following the second fixed groove 37, they will interfere with the rotation paths of the multiple first touch balls 30. Therefore, the materials of the first touch balls 30 and the second touch balls 38 must be insulating elastic materials. When the multiple first touch balls 30 are rotating, the limit ring 31 fixed on the upper half shaft 27 will allow the top ring 32 to move up and down on the top of the multiple first touch balls 30, wherein each raised portion at the bottom of the top ring 32 corresponds to between two adjacent first touch balls 30, which will enable the top ring 32 to slide up and down on the surface of the first touch balls 30;

[0047] Furthermore, since the damping shaft 6 needs to rotate 360° without dead angle, a wire connection port (attached) is provided on the outer side of the first cross bar 5. Fig.10 ), a power-on area 34 is installed on one side of the first crossbar 5 to connect the wires, wherein the first touch ball 30 and the second touch ball 38 vibrate the first crossbar 5 during the negotiation process, which may cause poor contact of the lamp tube 13, so the power supply of the lamp tube 13 needs to be strengthened, when the top ring 32 has an upward trend with the rotation of the first touch ball 30, the top hinge block 35 of the top ring 32 rotates inside the first crossbar 5, wherein one end of the hinge block 35 at the initial position always keeps in contact with the conductive spring sheet 36, and during the rising process of the top ring 32, the third spring 33 is compressed A downward pressure is applied to the other end of the hinge block 35, so that the contact area between the hinge block 35 and the conductive spring sheet 36 is increased, and pressure is applied to the conductive spring sheet 36 to prevent the lamp tube 13 from having poor contact. Electricity is transmitted to the lamp tube 13 through the power-on area 34, the conductive spring sheet 36, the hinge block 35, the top ring 32, the limit ring 31, and the upper half shaft 27 and the lower half shaft 28. Therefore, the above-mentioned material needs to be iron, and the angle generated during the relative rotation of the upper half shaft 27 and the lower half shaft 28 will not affect the wire, thereby improving the user experience.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A maintenance lighting device for a subway power distribution cabinet, comprising a hanging seat (1) suspended on the top of the power distribution cabinet, characterized in that: The bottom of the hanging seat (1) is movably suspended with a fixed seat (17), and both ends of the fixed seat (17) are provided with extension plates (15) extending toward the inner wall of the power distribution cabinet, and each of the extension plates (15) is rotatably connected to a balance plate (2), and each of the balance plates (2) is slidably connected to a limit slider (4), and the limit slider (4) is fixedly connected to a first cross bar (5), and one end of each of the first cross bars (5) is movably connected to a damping shaft (6), and the bottom of the damping shaft (6) is fixedly connected to a second cross bar (7), and the inside of each of the second cross bars (7) is fixedly connected to a A lamp tube (13) is provided, both ends of the bottom of the second cross bar (7) are swingably connected to fixed plates (11), one end between the two fixed plates (11) is fixedly connected to a diffraction plate (10), a plurality of diffraction openings are provided on the diffraction plate (10), the other end between the two fixed plates (11) is fixedly connected to a filter (12), a second convex mirror (23) is provided in the middle between the two fixed plates (11), both ends of the second convex mirror (23) extend out of the fixed plates (11), and a second internally threaded turntable (21) is threadedly connected to one of the fixed plates (11).

2. A subway power distribution cabinet maintenance lighting device according to claim 1, characterized in that: A mounting lug (8) is fixedly mounted on the outer side of each of the fixing plates (11); a first convex mirror (9) is slidably connected between the two mounting lugs (8); the first convex mirror (9) is located directly below the diffraction plate (10); one end of the first convex mirror (9) passes through one of the mounting lugs (8); and one end of the first convex mirror (9) is threadedly connected to a second internally threaded turntable (22).

3. A subway power distribution cabinet maintenance lighting device according to claim 2, characterized in that: One end of the second cross bar (7) is rotatably connected to a dimming knob (24); one end of the lamp tube (13) close to the dimming knob (24) is fixedly connected to a conductive ring (26); the inner ring of the dimming knob (24) is fixedly connected to a resistance wire (25); the conductive ring (26) and the resistance wire (25) are in sliding contact and are in an electrically connected state.

4. A subway power distribution cabinet maintenance lighting device according to claim 3, characterized in that: Two soft light areas (S1) are formed between the two end edges of the bottom of the second crossbar (7) and the two ends of the diffraction plate (10); the light beam emitted from the lamp tube (13) passes through the first convex mirror (9) and forms a high-display area (X) on the surface of the power distribution cabinet; there are divergent areas (Z) with low brightness between the high-display area (X) and the two soft light areas (S1); after high-brightness light beams are formed at multiple locations on the surface of the high-display area (X), stripes with a brightness darker than that of the divergent area (Z) are formed on the divergent area (Z).

5. The maintenance lighting device for a subway power distribution cabinet according to claim 1, characterized in that: The bottom of each extension plate (15) is rotatably connected to a base plate (14), and both ends of each base plate (14) are slidably connected to a movable rod (19), and a second rotating block (18) is fixedly connected between the opposite surfaces of the two movable rods (19), and a pair of first rotating blocks (16) are fixedly connected between the opposite surfaces of the two balancing plates (2), and a plurality of external teeth are fixedly provided at the edges of the second rotating block (18) and the first rotating block (16), and the second rotating block (18) and the first rotating block (16) are meshed together through the external teeth, and a second spring (20) is fixedly connected between each second rotating block (18) and the base plate (14).

6. The maintenance lighting device for a subway power distribution cabinet according to claim 1, characterized in that: A magnetic stone (3) is fixedly connected to the top of one end of each balancing plate (2), and the magnetic stone (3) and the power distribution cabinet are magnetically connected together.

7. A subway power distribution cabinet maintenance lighting device according to claim 6, characterized in that: A fixing rod (101) is movably connected to the bottom of the hanging seat (1), the fixing rod (101) and the fixing seat (17) are fixedly connected, one end of the fixing rod (101) extends into the hanging seat (1), and a mounting plate (103) is fixedly connected to the surface of the fixing rod, a first spring (102) is fixedly connected between the mounting plate (103) and the hanging seat (1), a conductive plate (104) is fixedly connected to the top of the mounting plate (103), and the conductive plate (104) contacts the top of the power distribution cabinet.

8. The maintenance lighting device for a subway power distribution cabinet according to claim 1, characterized in that: The first cross bar (5) and the second cross bar (7) are both made of lightweight material; the combined length of the first cross bar (5) and the second cross bar (7) does not exceed the width of the power distribution cabinet; and the distance between the two limit sliders (4) exceeds half the length of the first cross bar (5).

9. The maintenance lighting device for a subway power distribution cabinet according to claim 1, characterized in that: Each of the first cross bars (5) is provided with a chamber at one end, the damping shaft (6) comprises an upper half shaft (27) fixed to one end of the first cross bar (5), the bottom of one end of the first cross bar (5) is rotatably connected to a lower half shaft (28), the upper half shaft (27) and the lower half shaft (28) are electrically connected together, the top of the outer ring of the lower half shaft (28) is fixedly connected to a first fixed groove (29), the top of the first fixed groove (29) is equidistantly fixed with a first touch ball (30), the inside of the chamber of the first cross bar (5) is fixedly installed with a second fixed groove (37), the bottom of the second fixed groove (37) is equidistantly suspended with a plurality of second touch balls (38), when the lower half shaft (28) rotates, the first touch ball (30) and the second touch ball (38) touch each other, and after pressure is generated, the two repel each other and produce rebound.

10. A subway power distribution cabinet maintenance lighting device according to claim 9, characterized in that: A power-on area (34) is installed at the top of the chamber of the first cross bar (5), and a conductive spring sheet (36) is fixedly connected to one side of the power-on area (34). A limit ring (31) is fixedly connected to the bottom of the outer ring of the upper half shaft (27), and a top ring (32) is slidably connected between the limit ring (31) and the second fixed groove (37). A hinge block (35) is installed on the top of the top ring (32), and the hinge block (35) and the first cross bar (5) are rotatably connected together. A third spring (33) is suspended at the top of the chamber of the first cross bar (5), and the third spring (33) is fixedly connected to one end of the hinge block (35). The hinge block (35) is electrically connected to the power-on area (34) through the conductive spring sheet (36).

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