CN210928081U - A flicker-free LED drive power supply - Google Patents

Abstract

The utility model discloses a no stroboscopic LED drive power supply relates to the drive power supply field, including power supply housing, power supply housing's top fixed mounting has the cap, the equal fixedly connected with fixed picture peg in lower surface both sides of cap, and the mounting hole has all been seted up at power supply housing's both sides middle part, and the middle part fixedly connected with heat dissipation fan of mounting hole, one side of heat dissipation fan are provided with the filter screen, and the activity groove has all been seted up to power supply housing's both sides upper end, and the inside swing joint in activity groove has the fixture block, one side fixedly connected with pull rod of fixture. The utility model discloses a drive power supply during operation high accuracy constant current output, efficiency reach and are greater than or equal to 86% PF value and are greater than or equal to 0.95, and the loss of reducible electric wire netting avoids the pollution to the electric wire netting, and unique design ripple circuit eliminates 100/120Hz electric current ripple that the predriver produced, realizes not having the stroboscopic function, sets up through the cooperation that sets up the draw-in groove on fixture block and the fixed picture peg, can be convenient for fix cap and power supply housing.

Description

A flicker-free LED drive power supply

technical field

The utility model relates to the field of driving power supplies, in particular to a flicker-free LED driving power supply.

Background technique

The ED drive power supply is a power converter that converts the power supply into a specific voltage and current to drive the LED to emit light. Usually, the input of the LED drive power supply includes high-voltage power frequency AC (ie mains), low-voltage DC, high-voltage DC, low-voltage high-voltage Frequency AC (such as the output of an electronic transformer), etc., the flicker-free LED drive power is a drive power realized by bipolar PFC.

At present, with the gradual development of LED lighting, more and more customers will habitually take photos of LED lamps with their mobile phones. However, there is a stroboscopic phenomenon in the use of LED drive power, which leads to a decline in the use effect of LED drive power, and Most of the LED drive power is installed and fixed through four or more threaded holes, which not only increases the number of bolts used, but also increases the installation time, and is often easy to lose due to the small size of the bolts during disassembly, which increases virtually maintenance costs.

Therefore, it is necessary to invent a flicker-free LED driving power supply to solve the above problems.

Utility model content

The purpose of this utility model is to provide a stroboscopic-free LED drive power supply, so as to solve the stroboscopic phenomenon in use of the LED drive power supply proposed in the above-mentioned background art, which leads to a decrease in the use effect of the LED drive power supply, and most of the LED drive power supplies are Installing and fixing through four or more threaded holes not only increases the number of bolts used, but also increases the installation time, and is often easy to lose due to the small size of the bolts during disassembly, which increases the maintenance cost. .

In order to achieve the above purpose, the present invention provides the following technical solutions: a flicker-free LED driving power supply, comprising a power supply housing, a cover is fixedly installed on the top of the power supply housing, and both sides of the lower surface of the cover are A fixed plug board is fixedly connected, the middle of both sides of the power supply case is provided with a mounting hole, the middle of the mounting hole is fixedly connected with a cooling fan, a filter is arranged on one side of the cooling fan, and the power supply case is The upper ends of both sides are provided with movable grooves, the interior of the movable grooves is movably connected with a clamping block, one side of the clamping block is fixedly connected with a pull rod, one end of the pull rod is fixedly connected with a pull ring, and the outer side of the pull rod is sleeved There are tension springs.

Optionally, a card slot is opened on one side of the fixed plug board;

The side of the clamping block away from the pull rod is inserted into the clamping slot and matched with it.

Optionally, both sides of the upper surface of the power supply housing are provided with fixed slots;

The fixed plug board is located in and matched with the fixed slot.

Optionally, the present driving power supply adopts a single-stage high power factor (PF) primary-side control power supply technology;

A frequency coherent filter element is installed at the power supply AC interface coupling device;

The filter element is externally coupled with a low-power current.

Technical effects and advantages of the present utility model:

1. The driving power supply of the present utility model has high-precision constant current output when working, and the efficiency reaches ≥ 86% PF value ≥ 0.95, which can reduce the loss of the power grid, avoid the pollution to the power grid, and uniquely design the ripple circuit to eliminate the generation of the front-stage driver. 100/120Hz current ripple to achieve no stroboscopic function.

2. The utility model can facilitate the fixing of the housing cover and the power supply housing by setting the card block and the card slot on the fixed insert plate. Therefore, the rapid installation and disassembly of the cover can be realized. The filter screen can prevent foreign foreign particles from entering the inside of the power supply shell, and the driving power supply can be stably operated through the cooling fan.

Description of drawings

Figure 1 is a schematic cross-sectional view of the structure of the utility model.

FIG. 2 is an enlarged schematic view of the position A in FIG. 1 of the present utility model.

In the figure: 1. Power supply shell; 2. Shell cover; 3. Fixed board; 4. Mounting hole; 5. Cooling fan; 6. Filter; 7. Active slot; 8. Block; 9. Pull rod; , pull ring; 11, tension spring; 12, card slot; 13, fixed insert.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial direction", "circumferential direction", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying the indicated device. Or the elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the present utility model, unless otherwise expressly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection, or It can be a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The utility model provides a flicker-free LED driving power supply as shown in Figures 1-2, comprising a power supply housing 1, a housing cover 2 is fixedly mounted on the top of the power supply housing 1, and both sides of the lower surface of the housing cover 2 are A fixed plug board 3 is fixedly connected, and a fixed slot 13 is opened on both sides of the upper surface of the power supply housing 1. The fixed plug board 3 is located in the fixed slot 13 and fits with it. Both are provided with mounting holes 4, and the middle of the mounting holes 4 is fixedly connected with a cooling fan 5, through which the driving power supply can work stably, and a filter 6 is provided on one side of the cooling fan 5, which can prevent The impurity particles enter the interior of the power supply housing 1. The upper ends of both sides of the power supply housing 1 are provided with movable slots 7. The interior of the movable slot 7 is movably connected with a card block 8, and one side of the fixed board 3 is provided with a card slot 12. One side of the block 8 is fixedly connected with a pull rod 9, the side of the block 8 away from the pull rod 9 is inserted into the card slot 12 and matched with it, one end of the pull rod 9 is fixedly connected with a pull ring 10, and the outer side of the pull rod 9 is sleeved with a stretcher. The spring 11 can be easily fixed to the housing cover 2 and the power supply housing 1 by setting the card block 8 and the card slot 12 on the fixed board 3. By arranging the tension spring 11 on the pull rod 9, the card Block 8 has the ability of automatic reset, so as to realize the rapid installation and disassembly of cover 2. The drive power adopts single-stage high power factor (PF) primary side control power supply technology, and the power supply AC interface coupling device is installed with frequency coherent The filter element is externally coupled with low-power current. The driving power supply of the utility model has a high-precision constant current output when working, and the efficiency reaches ≥ 86% PF value ≥ 0.95, which can reduce the loss of the power grid and avoid the pollution to the power grid. The unique design pattern The wave circuit is used to eliminate the 100/120Hz current ripple generated by the pre-driver and realize the flicker-free function.

The practical working principle of the present invention: when the shell cover 2 needs to be disassembled, first, the user pulls the pull rod 9 through the pull ring 10, and the pull rod 9 drives the clamping block 8 to move horizontally, so that the clamping block 8 is completely separated from the clamping groove 12. When the board 3 is no longer fixed, the cover 2 is lifted upwards, and the fixed board 3 can be pulled out from the fixed slot 13 through the cover 2 .

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of its technical features, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present invention.

Claims (4)

1. The utility model provides a no stroboscopic LED drive power supply, includes power casing (1), its characterized in that: the utility model discloses a power supply device, including power casing (1), the top fixed mounting of power casing (1) has cap (2), the equal fixedly connected with fixed picture peg (3) in lower surface both sides of cap (2), mounting hole (4) have all been seted up at the both sides middle part of power casing (1), the middle part fixedly connected with heat dissipation fan (5) of mounting hole (4), one side of heat dissipation fan (5) is provided with filter screen (6), and activity groove (7) have all been seted up to the both sides upper end of power casing (1), the inside swing joint in activity groove (7) has fixture block (8), one side fixedly connected with pull rod (9) of fixture block (8), the one end fixedly connected with pull ring (10) of pull rod (9), the outside cover of pull rod (9) is equipped with extension spring (11).

2. The non-strobe LED driving power supply of claim 1, wherein:

one side of the fixed inserting plate (3) is provided with a clamping groove (12);

one side of the clamping block (8) far away from the pull rod (9) is inserted into the clamping groove (12) and matched with the clamping block.

3. The non-strobe LED driving power supply of claim 1, wherein:

two sides of the upper surface of the power supply shell (1) are provided with fixed slots (13);

the fixed inserting plate (3) is positioned in the fixed slot (13) and is matched with the fixed slot.

4. The non-strobe LED driving power supply of claim 1, wherein:

the driving power supply adopts a primary side control power supply technology of a single-stage high Power Factor (PF);

a frequency coherent filter device is arranged at the power supply alternating current interface coupling device;

the filter device is externally coupled with a low-power current.

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