Drip-proof lamp driver

Abstract

The utility model discloses a drip-proof lamp driver which comprises a bottom shell, a face shell, a wire inlet cover, a wire outlet cover and a circuit board, the edge of the bottom shell is provided with a box dam protruding upwards, and the box dam is of a continuous annular frame structure; the face shell covers the bottom shell, all areas of the outer wall face of the box dam make contact with the bottom shell, a first window is formed in the top face of one end of the face shell, a second window is formed in the other end of the face shell, vertical inserting grooves are formed in the two opposite sides of the face shell respectively, and the vertical inserting grooves are close to the second window. One end of the wire inlet cover is rotationally connected with the surface shell, the wire inlet cover is used for sealing the first window, and a first contact area is formed at the junction of the wire inlet cover and the surface shell; the wire outlet cover is detachably inserted into the face shell and seals the second window, a vertical insertion block matched with the vertical insertion groove is arranged on the wire outlet cover, and a second contact area is formed by the bottom of the wire outlet cover and the face shell. The lamp driver is good in anti-dripping effect, convenient to disassemble, assemble and maintain, and particularly suitable for subway lighting devices.

Description

Technical Field

[0001] The utility model relates to the technical field of subway lighting, in particular to a drip-proof lamp driver. Background Art

[0002] In the field of subway lighting technology, considering that there are bugs underground, it is required that objects larger than 1 mm cannot enter the interior of the lamp driver. Considering that there are air-conditioning condensers on the top of the subway, the lamp driver housing is required to be drip-proof. It can be seen that the subway lighting field has certain particularities, and the lamp driver housing is required to reach IP41 level.

[0003] At present, there are no lamp drivers specifically designed for subway environments on the market, and existing lamp drivers are difficult to prevent dripping water, and the protection level is difficult to reach IP41. In order to allow existing lamp drivers to be used in subway lighting, the current measure is to add a protective cover to the back shell of the lamp body, and the lamp driver is located in the protective cover. Among them, a waterproof EVA foam is also provided at the junction of the protective cover and the back shell of the lamp body, thereby improving the overall protection level of the lamp. This measure will undoubtedly cause inconvenience in disassembly and maintenance of the lamp driver. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a drip-proof lamp driver which is easy to disassemble, assemble and maintain.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a drip-proof lamp driver, comprising:

[0006] A bottom shell, wherein the edge of the bottom shell has a dam protruding upward, the dam is a continuous ring frame structure, and the bottom of the bottom shell is provided with a mounting hole and a wire outlet through hole;

[0007] A face shell, wherein the face shell cover is arranged on the bottom shell, each area of ​​the outer wall surface of the dam is in contact with the bottom shell, one end of the face shell is provided with a wire entry through hole, the top surface of one end of the face shell is provided with a first window, the other end of the face shell is provided with a second window, two opposite sides of the face shell are respectively provided with vertical slots, the vertical slots are arranged close to the second window, an elastic card plate is provided on the face shell, a card block is provided on the elastic card plate, and the elastic card plate is located on the side of the first window away from the second window;

[0008] A wire entry cover, one end of which is rotatably connected to the face shell, and the other end of which is provided with a card slot that cooperates with the card block, and the wire entry cover is used to close the first window, and a first contact area is formed at the junction of the wire entry cover and the face shell, and the first contact area is in a ring frame shape as a whole, and the cross section of the first contact area is in a Z shape;

[0009] An outlet cover, the outlet cover is detachably plugged into the face shell and closes the second window, the outlet cover is provided with a vertical plug block matched with the vertical slot, the bottom of the outlet cover forms a second contact area with the face shell, the second contact area is in a concave shape as a whole, and the cross section of the second contact area is in a Z shape;

[0010] A circuit board is installed on the bottom shell and is located in a cavity formed when the bottom shell is connected to the front shell. One end of the circuit board has an input terminal corresponding to the first window, and the other end of the circuit board has an output terminal corresponding to the second window.

[0011] In one embodiment, the height of the dam is greater than or equal to 5 mm.

[0012] In one embodiment, a transverse slot is provided on the top surface of the face shell, and the two ends of the transverse slot are respectively connected to the two vertical slots, and a transverse plug block cooperating with the transverse slot is provided on the wire outlet cover, and the two ends of the transverse plug block are respectively connected to the two vertical plug blocks.

[0013] In one embodiment, the top of the face shell has two mounting arms arranged opposite to each other, an axial hole is provided on the mounting arms, and one end of the wire entry cover is provided with an axial portion that cooperates with the axial hole, and the axial portion is rotatable relative to the mounting arm.

[0014] In one embodiment, the circuit board is provided with an avoidance gap, and the mounting holes and the wire outlet holes are arranged corresponding to the avoidance gap.

[0015] In one embodiment, the incoming wire terminal includes a copper wiring seat and a screw threadedly connected to the copper wiring seat, the copper wiring seat is electrically connected to the circuit board, and the copper wiring seat has a wiring hole with a diameter of 5 mm.

[0016] In one embodiment, it also includes a concave-shaped wire pressing block, wherein the first latching teeth are respectively provided on opposite sides of the wire pressing block, the bottom shell has two latching tooth arms arranged opposite to each other, and the latching tooth arms are provided with a plurality of second latching teeth cooperating with the first latching teeth. A reinforcement block is provided on the bottom shell, and the reinforcement block is located at one end of the bottom shell away from the second window. The two ends of the reinforcement block are respectively connected to the latching tooth arms, and one side of the reinforcement block is connected to the dam, and the outer side surface of the latching tooth arm contacts the inner wall surface of the surface shell.

[0017] In one embodiment, the edge of the first window has an upwardly protruding enclosure, the enclosure is a continuous ring frame structure, the outer wall surface of the enclosure is concave relative to the outer wall surface of the face shell, and the wire entry cover has a first step for avoiding the enclosure, and the vertical surface and the horizontal surface of the first step respectively contact the enclosure.

[0018] In one embodiment, the edge of the first window has a retaining wall protruding upward, the retaining wall is generally concave, the outer wall surface of the retaining wall is concave relative to the outer wall surface of the surface shell, and the wire outlet cover has a second step for avoiding the retaining wall, and the vertical surface and the horizontal surface of the second step respectively contact the retaining wall.

[0019] In one embodiment, a wire entry protection coil is provided at the wire entry through hole.

[0020] The beneficial effects of the utility model are:

[0021] The protection level of the drip-proof lamp driver itself has been greatly improved. First, the connection between the bottom shell and the surface shell has a continuous ring frame structure dam, which increases the electrical clearance and creepage distance, and improves the phenomenon of dripping water from the gap between the bottom shell and the surface shell into the interior of the lamp driver. Secondly, compared with the traditional lamp driver, an outlet cover is added to make the outlet end of the lamp driver waterproof and dustproof. More importantly, the gap between the outlet cover and the surface shell and the gap between the input cover and the surface shell can form a contact area with a Z-shaped cross-section, making it more difficult for water vapor to enter the interior of the lamp driver.

[0022] When the lamp driver needs to be disassembled for maintenance, the maintenance personnel first open the wire inlet cover and the wire outlet cover, then loosen the wire inlet and the wire outlet, then remove the bottom shell, and then loosen the fasteners that fasten the bottom shell and the external lamp body. The whole operation is very simple.

[0023] The wire entry cover is fixed by the block on the elastic card plate, so that the face shell and the wire entry cover always maintain close contact, which is conducive to further improving the waterproof effect. At the same time, when the user needs to open the wire entry cover, he can manually move the elastic card plate or use a tool to move the elastic card plate, so that the block is out of the slot and then open the wire entry cover. The operation is easy.

[0024] For the application end, in the subway lighting device using the drip-proof lamp driver, there is no need to add an additional protective cover on the lamp body, which is conducive to saving the cost of protective cover production consumables. At the same time, since the setting of the protective cover can be cancelled, it is easier for maintenance personnel to disassemble and maintain the drip-proof lamp driver compared to the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of a drip-proof lamp driver according to Embodiment 1 of the present utility model;

[0027] Figure 2 This is an exploded view of the drip-proof lamp driver according to the first embodiment of the utility model;

[0028] Figure 3 This is a cross-sectional view of the drip-proof lamp driver according to the first embodiment of the utility model. Figure 1 ;

[0029] Figure 4 This is a cross-sectional view of the drip-proof lamp driver according to the first embodiment of the utility model. Figure 2 .

[0030] Description of Figure Numbers:

[0031] 1. Bottom shell; 11. Dam; 12. Mounting hole; 13. Wire outlet hole; 14. Gear arm; 15. Reinforcement block;

[0032] 2. Surface shell; 21. First window; 211. Enclosure; 22. Second window; 221. Retaining wall; 23. Vertical slot; 24. Horizontal slot; 25. Elastic card plate; 26. Card block;

[0033] 3. Wire entry cover; 31. First contact area;

[0034] 4. outlet cover; 41. second contact area;

[0035] 5. Circuit board; 51. Incoming wiring terminal; 511. Copper terminal block; 512. Screws; 52. Avoidance gap;

[0036] 6. Wire pressing block;

[0037] 7. Wire protection coil. DETAILED DESCRIPTION

[0038] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0042] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is: a drip-proof lamp driver, which is particularly suitable for subway lighting devices. The drip-proof lamp driver is installed on the back shell of the lamp body.

[0046] The drip-proof lamp driver comprises a bottom shell 1, a front shell 2, a wire inlet cover 3, a wire outlet cover 4 and a circuit board 5. The edge of the bottom shell 1 has a dam 11 protruding upward, and the dam 11 is a continuous ring frame structure. The bottom of the bottom shell 1 is provided with a mounting hole 12 and a wire outlet through hole 13. The bottom shell 1 is connected to the back shell of the lamp body through a fastening structure member penetrating the mounting hole 12; the front shell 2 is covered on the bottom shell 1, and each area of ​​the outer wall surface of the dam 11 is in contact with the bottom shell 1, that is, the bottom shell 1 is tightly matched with the face shell 2, one end of the face shell 2 is provided with a wire entry through hole, the top surface of one end of the face shell 2 is provided with a first window 21, the other end of the face shell 2 is provided with a second window 22, the opposite sides of the face shell 2 are respectively provided with vertical slots 23, the vertical slots 23 are arranged close to the second window 22, the face shell 2 is provided with an elastic card 25, the elastic card 25 is provided with a card block 26, and the elastic card 25 is located on the side of the first window 21 away from the second window 22; One end of the incoming line cover 3 is rotatably connected to the face shell 2, and the other end of the incoming line cover 3 is provided with a card slot that cooperates with the card block 26. The incoming line cover 3 is used to close the first window 21. The junction of the incoming line cover 3 and the face shell 2 forms a first contact area 31, and the first contact area 31 is in the shape of a ring frame as a whole, and the cross-section of the first contact area 31 is Z-shaped; the outgoing line cover 4 is detachably plugged into the face shell 2 and closes the second window 22. The outgoing line cover 4 is provided with a vertical plug that cooperates with the vertical slot 23. The bottom of the outgoing line cover 4 forms a second contact area 41 with the face shell 2, and the second contact area 41 is in a concave shape as a whole, and the cross-section of the second contact area 41 is Z-shaped; the circuit board 5 is installed on the bottom shell 1 and is located in the chamber formed after the bottom shell 1 and the face shell 2 are connected. One end of the circuit board 5 has an incoming line terminal 51 arranged corresponding to the first window 21, and the other end of the circuit board 5 has an outgoing line terminal arranged corresponding to the second window 22.

[0047] As a preferred embodiment, the height of the dam 11 is greater than or equal to 5 mm. Since the drip-proof lamp driver is installed on the back shell of the lamp body, that is, the electrical clearance / creepage distance between the electronic components in the drip-proof lamp driver and the components of the lamp body is at least greater than 5 mm, which is conducive to ensuring the working stability of the lamp driver and the lamp body. It also means that water stains on the surface of the back shell need to penetrate upwards by at least 5 mm to enter the interior of the lamp driver. It can be seen that it is very difficult for water stains to penetrate into the interior of the lamp driver from the contact between the bottom shell 1 and the front shell 2, that is, the gap between the bottom shell 1 and the front shell 2 has an excellent waterproof effect.

[0048] In order to further improve the waterproof effect of the lamp driver, a transverse slot 24 is provided on the top surface of the face shell 2, and the two ends of the transverse slot 24 are respectively connected to the two vertical slots 23, so that the water received by the transverse slot 24 will be discharged along the vertical slots 23, and the outlet cover 4 is provided with a transverse plug block that cooperates with the transverse slot 24, and the two ends of the transverse plug block are respectively connected to the two vertical plug blocks.

[0049] In detail, the top of the face shell 2 has two mounting arms arranged opposite to each other, an axial hole is provided on the mounting arm, and one end of the wire entry cover 3 is provided with an axial portion that cooperates with the axial hole, and the axial portion is rotatable relative to the mounting arm.

[0050] In order to facilitate maintenance personnel to disassemble and maintain the lamp driver, in this embodiment, the circuit board 5 is provided with an avoidance gap 52, and the mounting hole 12 and the outlet hole 13 are arranged corresponding to the avoidance gap 52. In this way, maintenance personnel can remove the bottom shell 1 from the back shell of the lamp body without removing the circuit board 5, which further facilitates the disassembly and maintenance of the lamp driver.

[0051] In this embodiment, the incoming line terminal 51 includes a copper terminal block 511 and a screw 512 threadedly connected to the copper terminal block 511, the copper terminal block 511 is electrically connected to the circuit board 5, and the copper terminal block 511 has a wiring hole with a diameter of 5 mm. In this way, the incoming line terminal 51 can be well adapted to the 2.5 mm2 wire core in the subway, and there is no need to set up a transition cable like the existing lamp driver. In the specific product, the number of the incoming line terminal 51 is three, one incoming line terminal 51 is connected to the ground wire, another incoming line terminal 51 is connected to the live wire, and the remaining incoming line terminal 51 is connected to the neutral wire. Different from the traditional lamp driver, the drip-proof lamp driver has a grounding structure, and the safety of use is improved.

[0052] As a preferred embodiment, the outlet wiring terminal (not shown in the figure) is a push-type quick wiring terminal, which can facilitate the disassembly and assembly of the outlet wire. It is easy to understand that the outlet wire is the input wire of the lamp body.

[0053] The drip-proof lamp driver also includes a concave-shaped wire pressing block 6, which is used to press the incoming wire to prevent the incoming wire from accidentally detaching from the incoming wire terminal 51. The opposite sides of the wire pressing block 6 are respectively provided with first latch teeth, and the bottom shell 1 has two latch teeth arms 14 arranged opposite to each other. The latch teeth arms 14 are provided with a plurality of second latch teeth that cooperate with the first latch teeth. The bottom shell 1 is provided with a reinforcement block 15, and the reinforcement block 15 is located at the end of the bottom shell 1 away from the second window 22. The two ends of the reinforcement block 15 are respectively connected to the latch teeth arms 14, and one side of the reinforcement block 15 is connected to the dam 11. The outer side surface of the latch teeth arm 14 contacts the inner wall surface of the face shell 2. The provision of the reinforcing block 15 is conducive to improving the structural strength of the latch arm 14, reducing the risk of damage to the latch arm 14, thereby ensuring the service life of the lamp driver, and because the outer side of the latch arm 14 contacts the inner wall of the face shell 2, the face shell 2 plays a role in preventing the latch arm 14 from deforming outward, thereby ensuring that the wire pressing block 6 and the latch arm 14 can maintain a tight fit, which is conducive to ensuring the wire pressing effect of the wire pressing block 6. In the actual production process, it is preferred that the bottom shell 1, the reinforcing block 15 and the latch arm 14 are an integrated structure that is integrally processed and formed.

[0054] Specifically, the edge of the first window 21 has an upwardly protruding enclosure 211, and the enclosure 211 is a continuous ring frame structure. The outer wall surface of the enclosure 211 is concave relative to the outer wall surface of the surface shell 2, and the wire entry cover 3 has a first step for avoiding the enclosure 211. The vertical surface and the horizontal surface of the first step respectively contact the enclosure 211, thereby forming the aforementioned first contact area 31 with a Z-shaped cross-section.

[0055] Similarly, the edge of the first window 21 has a retaining wall 221 protruding upward, and the retaining wall 221 is concave as a whole. The outer wall surface of the retaining wall 221 is concave relative to the outer wall surface of the surface shell 2, and the wire outlet cover 4 has a second step for avoiding the retaining wall 221. The vertical surface and the horizontal surface of the second step respectively contact the retaining wall 221, thereby forming the aforementioned second contact area 41 with a Z-shaped cross-section.

[0056] Preferably, a wire entry protection coil 7 is provided at the wire entry through hole, and preferably the wire entry protection coil 7 is a wire diameter adaptive protection coil that can adapt to the cable diameter and is in close contact with the outer sheath of the cable.

[0057] The outlet wire through hole 13 is provided with an outlet wire protection coil (not shown in the figure).

[0058] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A drip-proof lamp driver, characterized in that: include A bottom shell, wherein the edge of the bottom shell has a dam protruding upward, the dam is a continuous ring frame structure, and the bottom of the bottom shell is provided with a mounting hole and a wire outlet through hole; A face shell, wherein the face shell cover is arranged on the bottom shell, each area of ​​the outer wall surface of the dam is in contact with the bottom shell, one end of the face shell is provided with a wire entry through hole, the top surface of one end of the face shell is provided with a first window, the other end of the face shell is provided with a second window, two opposite sides of the face shell are respectively provided with vertical slots, the vertical slots are arranged close to the second window, an elastic card plate is provided on the face shell, a card block is provided on the elastic card plate, and the elastic card plate is located on the side of the first window away from the second window; A wire entry cover, one end of which is rotatably connected to the face shell, and the other end of which is provided with a card slot that cooperates with the card block, and the wire entry cover is used to close the first window, and a first contact area is formed at the junction of the wire entry cover and the face shell, and the first contact area is in a ring frame shape as a whole, and the cross section of the first contact area is in a Z shape; An outlet cover, the outlet cover is detachably plugged into the face shell and closes the second window, the outlet cover is provided with a vertical plug block matched with the vertical slot, the bottom of the outlet cover forms a second contact area with the face shell, the second contact area is in a concave shape as a whole, and the cross section of the second contact area is in a Z shape; A circuit board is installed on the bottom shell and is located in a cavity formed when the bottom shell is connected to the front shell. One end of the circuit board has an input terminal corresponding to the first window, and the other end of the circuit board has an output terminal corresponding to the second window.

2. The drip-proof lamp driver according to claim 1, characterized in that: The height of the dam is greater than or equal to 5 mm.

3. The drip-proof lamp driver according to claim 1, characterized in that: A transverse slot is provided on the top surface of the face shell, and the two ends of the transverse slot are respectively connected to the two vertical slots. A transverse plug block matching the transverse slot is provided on the outlet cover, and the two ends of the transverse plug block are respectively connected to the two vertical plug blocks.

4. The drip-proof lamp driver according to claim 1, characterized in that: The top of the face shell is provided with two mounting arms arranged opposite to each other, an axial hole is provided on the mounting arm, and one end of the wire entry cover is provided with an axial portion that matches the axial hole, and the axial portion is rotatable relative to the mounting arm.

5. The drip-proof lamp driver according to claim 1, characterized in that: The circuit board is provided with an avoidance gap, and the mounting holes and the wire outlet holes are arranged corresponding to the avoidance gap.

6. The drip-proof lamp driver according to claim 1, characterized in that: The incoming wire terminal comprises a copper wiring seat and a screw threadedly connected to the copper wiring seat, the copper wiring seat is electrically connected to the circuit board, and the copper wiring seat has a wiring hole with a diameter of 5 mm.

7. The drip-proof lamp driver according to claim 1, characterized in that: It also includes a concave-shaped wire pressing block, wherein the first latching teeth are respectively provided on the opposite sides of the wire pressing block, the bottom shell has two latching tooth arms arranged opposite to each other, the latching tooth arms are provided with a plurality of second latching teeth cooperating with the first latching teeth, the bottom shell is provided with a reinforcement block, the reinforcement block is located at the end of the bottom shell away from the second window, the two ends of the reinforcement block are respectively connected to the latching tooth arms, one side of the reinforcement block is connected to the dam, and the outer side surface of the latching tooth arm contacts the inner wall surface of the surface shell.

8. The drip-proof lamp driver according to claim 1, characterized in that: The edge of the first window has an upwardly protruding enclosure, which is a continuous ring frame structure. The outer wall surface of the enclosure is concave relative to the outer wall surface of the face shell. The wire entry cover has a first step for avoiding the enclosure, and the vertical surface and the horizontal surface of the first step respectively contact the enclosure.

9. The drip-proof lamp driver according to claim 1, characterized in that: The edge of the first window has a retaining wall protruding upward, and the retaining wall is generally concave in shape. The outer wall surface of the retaining wall is concave relative to the outer wall surface of the surface shell. The wire outlet cover has a second step for avoiding the retaining wall, and the vertical surface and the horizontal surface of the second step respectively contact the retaining wall.

10. The drip-proof lamp driver according to claim 1, characterized in that: The wire entry through hole is provided with a wire entry protection coil.

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