PWM (Pulse Width Modulation) dimming device

Abstract

The utility model relates to the technical field of PWM dimming, and provides a PWM dimming device, which comprises a dimming assembly and a knob, the dimming assembly comprises a lower shell, mounting seats, an upper shell and a groove, the mounting seats are fixed on the two sides of the bottom end of the lower shell, the upper shell is arranged on one side of the top end of the lower shell, the knob is arranged on the top end of the upper shell, and the groove is formed in the bottom end of the lower shell. And a heat dissipation structure is arranged at the bottom end of the lower shell. The fixing structure is arranged, the upper shell is placed at the top end of the lower shell through the groove, one end of the clamping block abuts against one end of the clamping groove, the upper shell is pressed, under the action of the second reserved groove, the upper shell drives the clamping block to move into the clamping groove, and then the upper shell and the lower shell are fixed to each other. According to the PWM dimming device, the upper shell is pulled through the groove, so that the upper shell and the lower shell are separated from each other, the interior of the device is convenient to overhaul, the function that the device is convenient to disassemble and assemble is achieved, and the applicability of the PWM dimming device in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PWM dimming, in particular to a PWM dimming device. Background Art

[0002] PWM dimming refers to a method of controlling the brightness of light-emitting diodes using pulse width modulation technology. The brightness of LED lamps is adjusted by adjusting the pulse width. During the adjustment process, the LED load current of the same pulse cycle can be adjusted and switched to change the duty cycle in the pulse width, thereby changing the load current of the LED. The PWM dimming technology will not cause color spectrum shift during its application. At the same time, it can work in the range of zero current to full current, thereby ensuring the working effect of LED lamps. It is widely used in various LED lighting equipment. PWM dimming is more energy-efficient and avoids wasting a lot of energy on resistors. Therefore, a PWM dimming device is used.

[0003] The existing PWM dimming device is inconvenient to quickly disassemble and assemble during use, and it is inconvenient to inspect and repair the inside thereof during use, which makes the device of existing PWM dimming device have low applicability during use. Utility Model Content

[0004] The utility model aims to provide a PWM dimming device, so as to solve the defect that the existing PWM dimming device is inconvenient to be quickly disassembled and assembled.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a PWM dimming device, comprising a dimming component and a knob;

[0006] The dimming assembly includes a lower shell, a mounting seat, an upper shell and a groove, the mounting seats are fixed on both sides of the bottom end of the lower shell, an upper shell is arranged on one side of the top end of the lower shell, a knob is arranged on the top end of the upper shell, and a heat dissipation structure is arranged on the bottom end of the lower shell;

[0007] The two sides of the bottom end of the upper shell are evenly provided with fixing structures, the fixing structures include a clamping groove, a clamping block and a second reserved groove, and the clamping groove is arranged at the corner position of the bottom end of the upper shell inside the lower shell;

[0008] The top of the lower shell is evenly provided with wiring ports on one side away from the upper shell, the top of the lower shell on one side of the wiring port is fixed with a partition, grooves are opened on both sides of the interior of the upper shell, and a protective structure is provided on one side of the top of the upper shell.

[0009] When using the device, by providing a fixing structure, the device is easy to disassemble and assemble, thereby improving the applicability of the PWM dimming device when in use; by providing a protective structure, the device is easy to protect, thereby improving the convenience of the PWM dimming device when in use; by providing a heat dissipation structure, the device is easy to dissipate heat, thereby extending the service life of the PWM dimming device when in use.

[0010] Preferably, the interior of the mounting seat is evenly provided with mounting holes, and the outer side of the knob is provided with an anti-skid layer, under the action of the anti-skid layer, the friction between the finger and the knob is increased.

[0011] Preferably, the protective structure includes a cover plate, a baffle, a limit groove, a limit block and a first reserved groove, the cover plate is arranged on one side of the top of the upper shell, a baffle is fixed to one end of the cover plate, limit grooves are arranged at the corner positions of the bottom end of the cover plate inside the upper shell, limit blocks are arranged inside the limit grooves, and the first reserved grooves are arranged inside the limit blocks.

[0012] Preferably, the limit block and the upper shell body form a locking structure through a limit groove, and the top end of the limit groove extends to the outside of the upper shell body and is fixedly connected to the bottom end of the cover plate. The cover plate is moved, and the cover plate drives the baffle plate to move above the wiring port, so that one end of the limit block contacts one end of the limit groove, and the cover plate is pressed, and under the action of the first reserved groove, the cover plate drives the limit block to move to the inside of the limit groove.

[0013] Preferably, the limiting grooves are evenly spaced inside the upper shell, and the cover plate is located directly above the wiring port, so that the cover plate and the upper shell are fixed to each other, and under the action of the cover plate and the baffle, the wiring port is conveniently protected when not in use, and the cover plate is pulled out by one end of the cover plate, so that the cover plate and the upper shell are separated from each other.

[0014] Preferably, the heat dissipation structure includes a heat conducting plate, fixing bolts and heat dissipation fins, wherein the heat conducting plate is arranged at the bottom end of the lower housing, fixing bolts are evenly passed through both sides of the interior of the heat conducting plate, and heat dissipation fins are evenly fixed at the bottom end of the heat conducting plate. The heat conducting plate is fixed to the bottom end of the lower housing by fixing bolts, and the heat conducting plate transfers the heat of the lower housing to the heat dissipation fins.

[0015] Preferably, the heat conducting plate and the lower housing are fixedly connected by fixing bolts, and the heat dissipation fins are evenly spaced at the bottom of the heat conducting plate. Under the action of the evenly spaced heat dissipation fins, the contact area with the air is increased.

[0016] Preferably, a clamping block is provided inside the clamping groove, and a second reserved groove is provided inside the clamping block. The upper shell is placed on the top of the lower shell through the groove, so that one end of the clamping block contacts one end of the clamping groove, and the upper shell is pressed. Under the action of the second reserved groove, the upper shell drives the clamping block to move to the inside of the clamping groove.

[0017] Preferably, the clamping block and the lower shell form a clamping structure through a clamping groove, and the top end of the clamping block extends to the outside of the lower shell and is fixedly connected to the bottom end of the upper shell, thereby fixing the upper shell and the lower shell to each other, and pulling the upper shell through the groove, thereby separating the upper shell and the lower shell from each other, making it convenient to inspect the interior.

[0018] The utility model provides a PWM dimming device, which has the advantages of:

[0019] By providing a fixing structure, the upper shell is placed on the top of the lower shell through the groove, so that one end of the clamping block contacts one end of the clamping groove, and the upper shell is pressed. Under the action of the second reserved groove, the upper shell drives the clamping block to move to the inside of the clamping groove, so that the upper shell and the lower shell are fixed to each other, and the upper shell is pulled through the groove to separate the upper shell and the lower shell, so that the internal maintenance is convenient, and the function of easy disassembly and assembly of the device is realized, thereby improving the applicability of the PWM dimming device when in use;

[0020] By providing a protective structure, the cover plate is moved, and the cover plate drives the baffle plate to move above the wiring port, so that one end of the limit block contacts one end of the limit groove, and the cover plate is pressed. Under the action of the first reserved groove, the cover plate drives the limit block to move to the inside of the limit groove, so that the cover plate and the upper shell are fixed to each other. Under the action of the cover plate and the baffle plate, it is convenient to protect the wiring port when not in use. The cover plate is pulled out by one end of the cover plate, so that the cover plate and the upper shell are separated from each other, realizing the function of facilitating protection of the device, thereby improving the convenience of the PWM dimming device when in use;

[0021] By providing a heat dissipation structure, the heat conducting plate is fixed to the bottom end of the lower shell by fixing bolts. The heat conducting plate transfers the heat of the lower shell to the heat dissipation fins. Under the action of the heat dissipation fins with equal spacing, the contact area with the air is increased, and the function of facilitating heat dissipation of the device is realized, thereby extending the service life of the PWM dimming device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0024] Figure 3 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0025] Figure 4 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the heat dissipation structure of the utility model.

[0027] Explanation of the reference numerals in the figure: 1. dimming component; 101. lower shell; 102. mounting base; 103. upper shell; 104. groove; 2. knob; 3. protective structure; 301. cover plate; 302. baffle; 303. limit groove; 304. limit block; 305. first reserved groove; 4. heat dissipation structure; 401. heat conducting plate; 402. fixing bolt; 403. heat dissipation fin; 5. wiring port; 6. partition; 7. fixing structure; 701. snap-in groove; 702. snap-in block; 703. second reserved groove. DETAILED DESCRIPTION

[0028] 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 in 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.

[0029] See also Figure 1-Figure 5 The utility model provides a PWM dimming device, including a dimming component 1 and a knob 2. The dimming component 1 includes a lower shell 101, a mounting seat 102, an upper shell 103 and a groove 104. The mounting seat 102 is fixed on both sides of the bottom of the lower shell 101. The upper shell 103 is arranged on one side of the top of the lower shell 101. The knob 2 is arranged on the top of the upper shell 103. The bottom of the lower shell 101 is provided with a heat dissipation structure 4. The heat dissipation structure 4 includes a heat conducting plate 401, a fixing screw Bolts 402 and heat dissipation fins 403, the heat conducting plate 401 is arranged at the bottom end of the lower shell body 101, fixing bolts 402 are evenly penetrated on both sides of the inside of the heat conducting plate 401, and the heat dissipation fins 403 are evenly fixed to the bottom end of the heat conducting plate 401. The heat conducting plate 401 and the lower shell body 101 are fixedly connected by fixing bolts 402, and the heat dissipation fins 403 are evenly distributed at the bottom end of the heat conducting plate 401. Mounting holes are evenly arranged inside the mounting seat 102, and an anti-slip layer is arranged on the outside of the knob 2.

[0030] Reference Figure 2 and Figure 5As shown, the heat conducting plate 401 is fixed to the bottom end of the lower housing 101 by fixing bolts 402. The heat conducting plate 401 transfers the heat of the lower housing 101 to the heat dissipating fins 403. Under the action of the heat dissipating fins 403 with equal spacing, the contact area with the air is increased.

[0031] Fixed structures 7 are evenly arranged on both sides of the bottom end of the upper shell 103, and the fixed structure 7 includes a snap-in groove 701, a snap-in block 702 and a second reserved groove 703. The snap-in groove 701 is arranged at the corner position of the bottom end of the upper shell 103 inside the lower shell 101, and the snap-in groove 701 is provided with a snap-in block 702 inside. The snap-in block 702 is provided with a second reserved groove 703 inside. The snap-in block 702 and the lower shell 101 form a snap-in structure through the snap-in groove 701, and the top end of the snap-in block 702 extends to the outside of the lower shell 101 and is fixedly connected to the bottom end of the upper shell 103.

[0032] Reference Figure 2 and Figure 3 As shown, the upper shell 103 is placed on the top of the lower shell 101 through the groove 104, so that one end of the snap-in block 702 contacts one end of the snap-in groove 701, and the upper shell 103 is pressed. Under the action of the second reserved groove 703, the upper shell 103 drives the snap-in block 702 to move to the inside of the snap-in groove 701, thereby fixing the upper shell 103 and the lower shell 101 to each other, and the upper shell 103 is pulled out through the groove 104, thereby separating the upper shell 103 and the lower shell 101 from each other, so as to facilitate the inspection of the interior.

[0033] The top of the lower shell 101 is evenly provided with a wiring port 5 on one side away from the upper shell 103, and a partition 6 is fixed to the top of the lower shell 101 on one side of the wiring port 5. Grooves 104 are provided on both sides of the interior of the upper shell 103. A protective structure 3 is provided on one side of the top of the upper shell 103. The protective structure 3 includes a cover plate 301, a baffle plate 302, a limit groove 303, a limit block 304 and a first reserved groove 305. The cover plate 301 is provided on one side of the top of the upper shell 103, and a baffle plate 302 is fixed to one end of the cover plate 301. Limiting grooves 303 are arranged at the corner positions of the bottom ends of the cover plates 301 inside the body 103, limiting blocks 304 are arranged inside the limiting grooves 303, and first reserved grooves 305 are arranged inside the limiting blocks 304. The limiting blocks 304 and the upper shell 103 form a snap-fit ​​structure through the limiting grooves 303. The top ends of the limiting grooves 303 extend to the outside of the upper shell 103 and are fixedly connected to the bottom ends of the cover plates 301. The limiting grooves 303 are evenly spaced inside the upper shell 103, and the cover plates 301 are located directly above the wiring port 5.

[0034] Reference Figure 1 and Figure 2-Figure 4As shown, the cover plate 301 is moved, and the cover plate 301 drives the baffle plate 302 to move above the wiring port 5, so that one end of the limit block 304 conflicts with one end of the limit groove 303, and the cover plate 301 is pressed. Under the action of the first reserved groove 305, the cover plate 301 drives the limit block 304 to move to the inside of the limit groove 303, thereby fixing the cover plate 301 and the upper shell 103 to each other. Under the action of the cover plate 301 and the baffle plate 302, it is convenient to protect the wiring port 5 when not in use. The cover plate 301 is pulled by one end of the cover plate 301, thereby separating the cover plate 301 and the upper shell 103 from each other.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A PWM dimming device, comprising a dimming component (1) and a knob (2); Features: The dimming component (1) comprises a lower shell (101), a mounting seat (102), an upper shell (103) and a groove (104); the mounting seats (102) are fixed on both sides of the bottom of the lower shell (101); the upper shell (103) is arranged on one side of the top of the lower shell (101); the top of the upper shell (103) is provided with a knob (2); and the bottom of the lower shell (101) is provided with a heat dissipation structure (4); Fixed structures (7) are evenly arranged on both sides of the bottom end of the upper shell (103), the fixed structure (7) comprising a snap-in groove (701), a snap-in block (702) and a second reserved groove (703), the snap-in groove (701) being arranged at a corner position of the bottom end of the upper shell (103) inside the lower shell (101); A wiring port (5) is evenly arranged on one side of the top of the lower shell (101) away from the upper shell (103), a partition plate (6) is fixed to the top of the lower shell (101) on one side of the wiring port (5), grooves (104) are provided on both sides of the interior of the upper shell (103), and a protective structure (3) is arranged on one side of the top of the upper shell (103).

2. A PWM dimming device according to claim 1, characterized in that: The interior of the mounting seat (102) is evenly provided with mounting holes, and the outer side of the knob (2) is provided with an anti-slip layer.

3. A PWM dimming device according to claim 1, characterized in that: The protective structure (3) comprises a cover plate (301), a baffle plate (302), a limiting groove (303), a limiting block (304) and a first reserved groove (305); the cover plate (301) is arranged on one side of the top end of the upper shell (103); the baffle plate (302) is fixed to one end of the cover plate (301); limiting grooves (303) are arranged at the corner positions of the bottom end of the cover plate (301) inside the upper shell (103); limiting blocks (304) are arranged inside the limiting grooves (303); and the first reserved grooves (305) are arranged inside the limiting blocks (304).

4. A PWM dimming device according to claim 3, characterized in that: The limiting block (304) and the upper shell (103) form a snap-fit ​​structure via the limiting groove (303), and the top end of the limiting groove (303) extends to the outside of the upper shell (103) and is fixedly connected to the bottom end of the cover plate (301).

5. The PWM dimming device according to claim 3, characterized in that: The limiting grooves (303) are distributed at equal intervals inside the upper shell (103), and the cover plate (301) is located directly above the wiring port (5).

6. The PWM dimming device according to claim 1, characterized in that: The heat dissipation structure (4) comprises a heat conducting plate (401), fixing bolts (402) and heat dissipation fins (403); the heat conducting plate (401) is arranged at the bottom end of the lower shell (101); fixing bolts (402) are evenly passed through both sides of the heat conducting plate (401); and heat dissipation fins (403) are evenly fixed to the bottom end of the heat conducting plate (401).

7. A PWM dimming device according to claim 6, characterized in that: The heat conducting plate (401) and the lower housing (101) are fixedly connected via fixing bolts (402), and the heat dissipation fins (403) are distributed at equal intervals at the bottom end of the heat conducting plate (401).

8. The PWM dimming device according to claim 1, characterized in that: The clamping slots (701) are each provided with a clamping block (702) therein, and the clamping block (702) is each provided with a second reserved slot (703) therein.

9. A PWM dimming device according to claim 8, characterized in that: The clamping block (702) and the lower shell (101) form a clamping structure through the clamping groove (701), and the top end of the clamping block (702) extends to the outside of the lower shell (101) and is fixedly connected to the bottom end of the upper shell (103).

Images