CN204201699U - Dimmable LED light fixture - Google Patents

Abstract

The utility model discloses a dimmable LED lamp in the field of LED lighting, which comprises a ceiling plate and an LED light source assembly installed on the ceiling plate. The LED light source assembly is composed of an LED board and a driver that provides a low-voltage power supply for the LED board. The drive circuit board includes an input power line, a high-voltage input module, a dimming module, a transformer module, a low-voltage output module, and an output power line. The size of the voltage, and then the high-voltage power is converted into a safe low-voltage power through the transformer module, and then the safe low-voltage power is output through the low-voltage output module, and finally the low-voltage power is transmitted to the LED board through the output power line. LED lamps realize high-voltage input and low-voltage output to ensure the safety of use. The dimming scheme with dimming module is designed to adjust the brightness of lighting lamps, thereby effectively saving electricity costs and improving market competitiveness.

Description

Dimmable LED Fixtures

technical field

    The utility model relates to the field of LED lighting, in particular to a dimmable LED lamp.

Background technique

The current production of ceiling lamps or single chandeliers, especially export lamps, generally use two-stage ON/OFF switches to control the lighting of the lamps. Some of the old-fashioned lamps still use the earliest domestically produced resistance-capacity step-down method to design the circuit. The control board, or the designed high-voltage lamp beads directly control the lighting of the lamps through the chip. The RC step-down and high-voltage chips are used to control the lighting of lamps and lanterns. In use, the products have potential safety hazards and unstable quality. Whether they are domestic or exported products, they are lacking in safety regulations. For example, FCC is poor in anti-interference, instantaneous voltage and current increase or lightning strikes are easy to damage the lamp and lose its lighting function. Of course, it is even more difficult to pass the fifth-level energy efficiency. In addition, when using the ON/OFF switch to drive, it has no dimming function, and consumers cannot use it according to Adjusting according to the degree of brightness and darkness can not effectively save electricity costs and reduce the cost of electricity consumption, which is not convenient for market promotion.

Utility model content

The purpose of this utility model is to solve the above defects and provide a dimmable LED lamp, which is safe to use and can adjust the brightness at will, effectively saving electricity costs.

The purpose of this utility model is achieved in the following ways:

The dimmable LED lamp includes a ceiling cup and an LED light source assembly installed on the ceiling cup, and a lampshade is arranged under the LED light source assembly. The LED light source assembly is composed of an LED board and a driver that provides a low-voltage power supply to the LED board, and the driver outputs a low-voltage power supply.

The driver includes a drive shell and a drive circuit board arranged inside the drive shell. The drive circuit board includes an input power line, a high-voltage input module, a dimming module, a voltage transformation module, a low-voltage output module and an output power line. The high-voltage input module is respectively connected to the input power line and the dimming module, the voltage transformation module is respectively connected to the dimming module and the low-voltage output module, and the output power line is connected to the low-voltage output module.

The high-voltage power enters the high-voltage input module through the input power line, and then adjusts the input voltage through the dimming module, and then converts the high-voltage power into safe low-voltage power through the transformer module, and then outputs safe low-voltage power through the low-voltage output module Finally, the low-voltage power is sent to the LED board through the output power line, and the LED board is powered by the low-voltage power supply to ensure the safety of use.

In the above description, as a preferred solution, the dimming module is composed of a thyristor dimming circuit or a resistor dimming circuit or a PWM chip dimming circuit. The dimming module is matched with the dimming switch. According to the needs of different countries, if you use a resistor dimming switch, you can match the resistor dimming circuit. If you use a thyristor dimming switch, you can match the thyristor dimming circuit. The PWM chip dimming switch matches the PWM chip dimming circuit.

In the above description, as a preferred solution, the end of the output power line of the driver is provided with a male connector, and the LED board is provided with a female connector mated with the male connector. Design the wiring method of male connector and female connector for assembly, reduce the assembly of terminal wiring method, save labor costs and make the circuit board more beautiful.

In the above description, as a preferred solution, this solution is designed as a ceiling lamp structure. The bottom middle end of the ceiling plate is a downward protruding plane, and the LED board and the driver are both arranged on the bottom surface of the protruding plane. The LED board consists of two The above arc-shaped LED light bar is formed, and the LED light bar is surrounded to form a ring shape, and the driver is located in the center of the ring-shaped LED light bar. The ring-shaped distribution of LED light strips can not only expand the light-emitting area but also save costs, and at the same time effectively solve the defect of hidden dark areas on the light-emitting surface.

In the above description, as a preferred solution, the edge of the protruding plane is provided with a sinking platform for installing the lampshade. The lampshade is an arc-shaped disc structure with an upward opening, and the opening of the lampshade is locked with the sinking platform. The rational design of the lampshade and lamp holder has a good lighting effect.

In the above description, as a preferred solution, this solution is designed as a single chandelier structure. The top and middle end of the ceiling cup protrudes upwards to form a downwardly opening accommodation chamber, and a vertically downward extending lamp is installed at the top center of the accommodation chamber. Mounting column, the lower edge of the ceiling plate expands outwards to form a cover body integrated with the ceiling plate, the driver penetrates into the mounting column and is fixed in the accommodating cavity, the LED board is a disc-shaped structure, and the LED board is penetrated and installed The column is fixed under the driver, and the LED board is located at the opening of the cavity.

In the above description, as a preferred solution, several air convection holes are provided on the top edge of the accommodating cavity, and a heat dissipation plate penetrating into the mounting column is also provided between the driver and the LED board. The air convection hole is located directly above the driver, the structural size is reasonably designed, and with the heat dissipation plate, the heat dissipation problem of the LED is effectively solved, and the abnormality caused by the heat dissipation problem of the LED, such as dead lights, etc. is avoided.

In the above description, as a preferred solution, the lampshade is composed of a light-transmitting circular light baffle, and the light baffle penetrates into the mounting column and is fixed by a fixing piece. The light baffle is located under the LED board, which is a light-transmitting structure, which can not only protect the LED board, but also prevent strong light from directly stimulating the eyes, and also play a role in appearance decoration.

The beneficial effects produced by the utility model are: the design of a driver with a dimming module enables the LED lamps to realize high-voltage input and low-voltage output, ensuring the safety of use, and a dimming scheme designed with a dimming module, which can effectively match different countries The dimmer switch can adjust the output voltage by adjusting the dimmer switch to meet people's demand for the brightness of lighting products, and can adjust the brightness of lighting fixtures, thereby effectively saving electricity costs and improving market competitiveness. In addition, its overall The structure has high luminous efficiency and high color rendering index.

Description of drawings

Fig. 1 is the structural representation of drive circuit board in the utility model;

Fig. 2 is a schematic diagram of partial structural decomposition of Embodiment 1 of the utility model;

Fig. 3 is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

Fig. 4 is a schematic diagram of structure decomposition of Embodiment 2 of the utility model;

Fig. 5 is a schematic diagram of the overall structure of Embodiment 2 of the utility model;

In the figure, 1 is the ceiling plate, 2 is the lampshade, 3 is the LED light strip, 4 is the driver, 5 is the input power line, 6 is the high-voltage input module, 7 is the dimming module, 8 is the transformer module, and 9 is the low-voltage For the output module, 10 is the output power cord, 11 is the fixed cover, 12 is the mounting column, 13 is the LED board, 14 is the light baffle, 15 is the air convection hole, 16 is the cooling plate, and 17 is the fixing piece.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Embodiment one

Referring to Figures 1 to 3, the LED lamps implemented specifically include a ceiling plate 1 and an LED light source assembly installed on the ceiling plate 1. A lampshade 2 is arranged under the LED light source assembly. This embodiment is designed as a ceiling lamp structure. The middle end of the bottom of the ceiling plate 1 is a downward protruding plane, and the LED board and the driver 4 are both arranged on the bottom surface of the protruding plane. The LED board in this embodiment is composed of four curved LED light bars 3, and the four curved LED strips The light bar 3 is surrounded to form a ring shape, and the driver 4 is located at the center of the ring-shaped LED light bar 3 . The annular distribution of the LED light bar 3 can not only expand the light-emitting area but also save costs, and at the same time effectively solve the defect of hidden dark areas on the light-emitting surface. The edge of the protruding plane is provided with a sinking platform for installing the lampshade 2. The lampshade 2 is an arc-shaped disc structure with an upward opening, and the opening of the lampshade 2 cooperates with the sinking platform to lock. The rational design of the lampshade and lamp holder has a good lighting effect.

The LED light source assembly of this embodiment is composed of an LED board and a driver 4 that provides a low-voltage power supply to the LED board, and the driver outputs a low-voltage power supply. The end of the output power line 10 of the driver 4 is provided with a male connector, and the LED board is provided with a female connector mated with the male connector. The wiring method of pairing the male connector and the female connector is used for assembly, reducing the assembly of the terminal wiring method, which not only saves labor costs but also makes the circuit board more beautiful.

In addition, in order to realize a safe dimmable function, the specific structure of the driver 4 includes a drive shell and a drive circuit board arranged inside the drive shell, the drive circuit board includes an input power line 5, a high-voltage input module 6, a dimming module 7, Transformer module 8 , low voltage output module 9 and output power line 10 . The high-voltage input module 6 is connected to the input power line 5 and the dimming module 7 respectively, the transformer module 8 is connected to the dimming module 7 and the low-voltage output module 9 respectively, and the output power line 10 is connected to the low-voltage output module 9 .

When energized, the high-voltage power enters the high-voltage input module 6 through the input power line 5, and then adjusts the size of the input voltage through the dimming module 7. The dimming module 7 of this embodiment is dimmed by a thyristor dimming circuit or a resistor. circuit or PWM chip dimming circuit, then transform the high-voltage power into safe low-voltage power through the transformer module 8, then output the safe low-voltage power through the low-voltage output module 9, and finally deliver the low-voltage power to the LED through the output power line 10 board, the LED board is powered by a low-voltage power supply to ensure the safety of use.

Embodiment two

Referring to Fig. 1, Fig. 4 and Fig. 5, the LED lamps specifically implemented include a ceiling cup 1 and an LED light source assembly installed on the ceiling cup 1. A lampshade is arranged under the LED light source assembly. This embodiment is designed as a single pendant lamp In terms of structure, the single chandelier of this embodiment is directly installed through the fixed cover 11 fixed to the top during installation, and the single chandelier can be fixed on the fixed cover 11 by various fixing methods. The middle end of the top of the ceiling cup 1 protrudes upwards to form an accommodating chamber with a downward opening, and a mounting column 12 extending vertically downwards is installed at the center of the top of the accommodating chamber, and the lower edge of the ceiling cup 1 expands outwards to form a The disk 1 is an integral cover, and the driver 4 penetrates the mounting column 12 and is fixed in the accommodation cavity. The LED board 13 of this embodiment is a disc-shaped structure, and the LED board 13 penetrates the mounting column 12 and is fixed below the driver 4 , and the LED board 13 is located at the opening of the accommodating cavity. The lampshade of this embodiment is composed of a light-transmitting circular light baffle 14. The light baffle 14 penetrates the mounting column 12 and is fixed by the fixing piece 17. The fixing piece 17 is fixed on the bottom of the mounting column 12, and can be stably pressed against the top of the mounting column. All parts, in addition the fixing part 17 also plays a decorative role. The light baffle 14 is located below the LED board, and it is a light-transmitting structure, which can not only protect the LED board, but also prevent strong light from directly stimulating the eyes, and also play a decorative role in appearance.

This embodiment has a good heat dissipation effect. Several air convection holes 15 are provided on the top edge of the accommodating cavity, and a heat dissipation plate 16 penetrating into the mounting column 12 is also provided between the driver 4 and the LED board. The air convection hole 15 is located directly above the driver 4, and the structural size is reasonably designed. Together with the heat dissipation plate 16, the heat dissipation problem of the LED is effectively solved, and the abnormality caused by the heat dissipation problem of the LED, such as dead lights, etc. is avoided.

In addition, the structure of the dimming function realized in this embodiment is the same as the structure of Embodiment 1. The driver 4 includes a drive shell and a drive circuit board arranged inside the drive shell. The drive circuit board includes an input power line 5, a high-voltage input module 6. Dimming module 7 , voltage transformation module 8 , low voltage output module 9 and output power line 10 . The high-voltage input module 6 is connected to the input power line 5 and the dimming module 7 respectively, the transformer module 8 is connected to the dimming module 7 and the low-voltage output module 9 respectively, and the output power line 10 is connected to the low-voltage output module 9 .

When energized, the high-voltage power enters the high-voltage input module 6 through the input power line 5, and then adjusts the size of the input voltage through the dimming module 7. The dimming module 7 of this embodiment is dimmed by a thyristor dimming circuit or a resistor. circuit or PWM chip dimming circuit, then transform the high-voltage power into safe low-voltage power through the transformer module 8, then output the safe low-voltage power through the low-voltage output module 9, and finally deliver the low-voltage power to the LED through the output power line 10 board, the LED board is powered by a low-voltage power supply to ensure the safety of use. A driver 4 with a dimming module 7 is designed to enable LED lamps to achieve high-voltage input and low-voltage output, ensuring safety in use. A dimming scheme with a dimming module 7 is designed to effectively match dimming switches in different countries. The adjustment of the dimmer switch is used to adjust the output voltage to meet people's needs for the brightness of lighting products, and can adjust the brightness of lighting fixtures, thereby effectively saving electricity costs.

The above content is a further detailed description of the utility model in conjunction with specific preferred embodiments, and it cannot be determined that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, on the premise of not departing from the concept of the utility model, some simple deduction or replacement can also be made, which should be regarded as the protection scope of the utility model.

Claims (8)

1. Dimmable LED light fixture, the LED light source component comprising ceiling dish and be installed on ceiling dish, the below of LED light source component is provided with lampshade, described LED light source component provides the driver of low-tension supply to form by LED board and to LED board, it is characterized in that: this driver comprises cover of driver and is arranged at the drive circuit board of cover of driver inside, this drive circuit board comprises input power cord, high input voltage module, light-adjusting module, voltage changing module, low pressure output module and out-put supply line, high input voltage module is connected with input power cord and light-adjusting module respectively, voltage changing module is connected with light-adjusting module and low pressure output module respectively, out-put supply line is connected with low pressure output module, high-tension electricity enters to high input voltage module by input power cord, the size of input voltage is regulated again through light-adjusting module, then high-tension electricity is changed into safe low tension by voltage changing module, again through the low tension of low pressure output module output safety, finally by out-put supply line, low tension is delivered to LED board.

2. Dimmable LED light fixture according to claim 1, is characterized in that: described light-adjusting module is made up of thyristor regulating optical circuit or resistance light adjusting circuit or PWM chip light adjusting circuit.

3. Dimmable LED light fixture according to claim 2, is characterized in that: the out-put supply line end of described driver is provided with male joint, and LED board is provided with and matches the female joint be connected with male joint.

4. Dimmable LED light fixture according to claims 1 to 3 any one, it is characterized in that: the bottom middle-end of described ceiling dish is downward projection plane, LED board and driver are all arranged at the bottom surface of projection plane, LED board is made up of the LED lamp bar of more than two arcs, LED lamp bar is circular around formation, and driver is positioned at the center of circular LED lamp bar.

5. Dimmable LED light fixture according to claim 4, it is characterized in that: the edge of described projection plane is provided with the heavy stand for installing lampshade, lampshade is the arc disk-like structure of opening upwards, and the opening of lampshade coordinates with heavy stand and clamps.

6. Dimmable LED light fixture according to claims 1 to 3 any one, it is characterized in that: the top middle-end of described ceiling dish upwardly forms the container cavity that Open Side Down, and the erection column extended vertically downward is installed in the center of top of container cavity, the lower edge of ceiling dish is outwards launched to be formed and the cover body of ceiling dish in one, driver penetrates erection column and is fixed in container cavity, described LED board is disc-shaped structure, LED board penetrates erection column and is fixed on the below of driver, and LED board is positioned at the opening of container cavity.

7. Dimmable LED light fixture according to claim 6, is characterized in that: the top of described container cavity is provided with several cross-ventilation holes, is also provided with the heat sink penetrating erection column between described driver and LED board.

8. Dimmable LED light fixture according to claim 7, is characterized in that: described lampshade is made up of the circular light barrier of printing opacity, and light barrier is penetrated erection column and is fixed by fixture.