Energy-saving LED (light-emitting diode) adjustable color temperature light supplement lamp

Abstract

The utility model discloses an energy-saving LED (Light Emitting Diode) adjustable color temperature light supplement lamp, which relates to the technical field of light supplement lamps, and comprises a shell, a control panel is arranged in the shell, one side of the control panel is electrically connected with a lamp panel, one side of the lamp panel is provided with a front panel, the front panel is fixedly connected with the shell through a plurality of fixing bolts, the surface of one side of the control panel is provided with a mounting notch, and the mounting notch is fixedly connected with the lamp panel through a plurality of fixing bolts. And a fan is arranged in the mounting notch. According to the energy-saving LED color-temperature-adjustable light supplement lamp, PWM signals are output by the MCU at the nodes D IM1 and D IM2 and enter current feedback signals through RC filtering to adjust the current of the LED, and the current feedback signal adjustment has the advantages of no stroboflash, large adjustment amplitude, low minimum brightness, fan interface, starting when a QC or PD charger is used, and heat dissipation for the LED when the power is high. And when the upper limit of the temperature is detected, the Q1 is controlled to start the fan and the FAN-PWM node (MCU output) to control the rotating speed of the fan and intelligently adjust heat dissipation (reduce noise), and the structural design is humanized.

Description

Technical Field

[0001] The utility model relates to the technical field of fill-in lights, in particular to an energy-saving LED fill-in light with adjustable color temperature. Background Art

[0002] LED color temperature adjustable fill light, DC dimming, no flicker, high color rendering (Ra>95) LED lamp beads, eye protection and environmental protection. High-efficiency boost constant current drive, green energy saving, low-carbon life.

[0003] In daily life, mobile phone chargers of various models and powers can be seen everywhere, and most of them are redundant and can be discarded at will, which is not environmentally friendly. Therefore, it is necessary to design an energy-saving LED adjustable color temperature fill light that can be suitable for almost all mobile phone chargers and achieve the effect of adaptive power (5-30W), which is energy-saving and environmentally friendly. Utility Model Content

[0004] The purpose of the utility model is to provide an energy-saving LED fill light with adjustable color temperature to solve the problems raised in the above background technology.

[0005] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0006] An energy-saving LED color temperature adjustable fill light comprises a shell, a control board is installed inside the shell, a light board is electrically connected to one side of the control board, a front panel is provided on one side of the light board, and the front panel is fixedly connected to the shell by a plurality of fixing bolts.

[0007] Preferably, a mounting notch is provided on one side surface of the control panel, and a fan is provided inside the mounting notch.

[0008] Preferably, a plurality of universal nuts for camera tripods are embedded in the bottom of the housing.

[0009] Preferably, the light board is made of an LED aluminum substrate.

[0010] Preferably, the front panel is made of transparent acrylic material.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, the MCU outputs PWM signals at the DIM1 and DIM2 nodes, which are filtered by RC and then enter into the current feedback signal to adjust the LED current. The advantages of the current feedback signal regulation are no flicker, large adjustment range and low minimum brightness.

[0013] The fan interface of this utility model is enabled when using a QC or PD charger, and provides heat dissipation for LEDs at high power. When the upper temperature limit is detected, Q1 is controlled to turn on the fan, and the FAN-PWM node (MCU output) is used to control the fan speed, intelligently adjust the heat dissipation (reduce noise), and the structural design is humanized.

[0014] The bottom of the shell of the utility model is embedded with a plurality of universal nuts for camera tripods, which are convenient for fixing on the tripod for use. The overall structure is compact, simple, and low in cost. The size after assembly is approximately 106*65*32mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the exploded structure of an energy-saving LED color temperature adjustable fill light;

[0016] Figure 2 This is a schematic diagram of the power supply circuit connection of the energy-saving LED color temperature adjustable fill light;

[0017] Figure 3 This is a schematic diagram of the control board circuit connection of the energy-saving LED color temperature adjustable fill light;

[0018] Figure 4 This is a schematic diagram of the circuit connection of the dimming potentiometer part of the energy-saving LED color temperature adjustable fill light;

[0019] Figure 5 This is a schematic diagram of the LED driver circuit connection of an energy-saving LED color temperature adjustable fill light;

[0020] Figure 6 This is a schematic diagram of the light board circuit connection of the energy-saving LED color temperature adjustable fill light;

[0021] Figure 7 The circuit system block diagram of the energy-saving LED color temperature adjustable fill light.

[0022] In the figure: 1. Shell; 2. Control board; 3. Light board; 4. Front panel; 5. Fan. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1:

[0025] See also Figure 1-Figure 7As shown, the utility model is an energy-saving LED color temperature adjustable fill light, including a shell 1, a control board 2 is installed inside the shell 1, a light board 3 is electrically connected to one side of the control board 2, a front panel 4 is provided on one side of the light board 3, and the front panel 4 is fixedly connected to the shell 1 by a plurality of fixing bolts.

[0026] A mounting notch is provided on one side surface of the control board 2 , and a fan 5 is provided inside the mounting notch.

[0027] A plurality of universal nuts for camera tripods are embedded in the bottom of the housing 1 .

[0028] The light board 3 is made of an LED aluminum substrate.

[0029] The front panel 4 is made of transparent acrylic material.

[0030] As can be seen from the above, a number of universal nuts for camera tripods are embedded at the bottom of the shell 1, which are convenient for fixing on the tripod for use. The overall structure is compact, simple, and low-cost. After assembly, the size is approximately 106*65*32mm, wherein the fan 5 serves to dissipate heat for internal components.

[0031] Embodiment 2:

[0032] refer to Figure 2 As shown, the utility model is an energy-saving LED color temperature adjustable fill light, powered by USB TYPE-C, supporting PD, or QC protocol charger. U1 CH224K spoofing chip makes the input maximum spoof to 20V (the highest voltage supported by the automatic spoofing charger). When using a 5V charger, the power supply from U8HT7533 supplies 3.3V for the back-end control part. When using a QC or PD charger, the power supply from U3 ME3116 DC-DC step-down chip to 5V is used for the back-end control part and the cooling fan 5. The MCU will detect the input voltage to determine the maximum power of the fill light.

[0033] For example: Use a 5V charger, the most common charger is 5V 2A, the maximum power of the fill light is 5W, and use passive cooling;

[0034] Use a QC charger, the most common charger is the highest (12V 1.5A), the maximum power of the fill light is 15W, and use a fan 5 for heat dissipation;

[0035] Use a PD charger, the most common charger is the highest (20V 3.2A), the maximum power of the fill light is 30W, and use fan 5 for heat dissipation.

[0036] Embodiment three:

[0037] refer to Figure 3As shown, the utility model is an energy-saving LED color temperature adjustable fill light. The power supply is stepped down by U5 XC6206 to 3V for MCU. MCU uses U6 STM32F030F4P6, which has sufficient performance for this project and high cost performance. U7 TL431 provides a reference voltage of 2.5V, RT1 NTC thermistor detects the temperature of the lamp board 3, and R33 and R34 detect the input voltage.

[0038] Embodiment 4:

[0039] refer to Figure 4 As shown, the utility model is an energy-saving LED color temperature adjustable fill light, which is input by two potentiometers, input to MCU->AD detection, and then output is controlled by MCU. One adjusts the cold color temperature (5700K) and the other adjusts the warm color temperature (2700K).

[0040] Embodiment five:

[0041] refer to Figure 5 As shown, the utility model is an energy-saving LED color temperature adjustable fill light, U2, U4 SY7203 boost constant current chip (maximum current 4A) to drive the LED light string. DIM1, DIM2, nodes are output by MCU PWM signal, after RC filtering, into the current feedback signal to adjust the LED current. The advantages of current feedback signal regulation are no flicker, large adjustment range, and low minimum brightness. J2 fan 5 interface is enabled when using QC or PD charger, and provides LED heat dissipation at high power. When the upper temperature limit is detected, Q1 is controlled to turn on fan 5, FAN-PWM node (MCU output) to control the speed of fan 5 and intelligently adjust the heat dissipation (reduce noise).

[0042] Embodiment six:

[0043] refer to Figure 6 As shown, the utility model is an energy-saving LED color temperature adjustable fill light. The LED lamp beads use a high color rendering index of 0.3W single, and the cold and warm circuits use a 9-in-1 and 6-in-1 design. The maximum power here is controlled at 15W*2. (27V*0.55A per channel). The RT1NTC thermistor detects the temperature of the lamp board 3.

[0044] Embodiment seven:

[0045] refer to Figure 1-Figure 7As shown, the utility model is an energy-saving LED color temperature adjustable fill light. After turning on, the voltage of the charger input is detected; after 5 seconds of voltage, the highest power (limiting the maximum PWM) is determined by the different powers corresponding to different voltages. Among them, 5V->5W, 9V->10W, 12V->15W, 20V->30W; detect the values ​​of the two input potentiometers, average filter 0 output two PWM to adjust the cold and warm LED currents. After reaching the maximum power in the above table, the current will no longer increase; detect the NTC temperature (NTC temperature at 3 of the lamp board), average filter, when the temperature>45 degrees, turn on the fan 5 at half speed, the temperature>55 degrees, turn on the fan 5 at full speed, the temperature>60 degrees, reduce the LED current to 1 / 2, the temperature>55 degrees, trigger the protection, turn off the LED, until the temperature<45 degrees, and restart. If a voltage drop is detected, the protection is triggered and the LED is turned off. The program runs in a loop.

[0046] 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. Energy-saving LED color temperature adjustable fill light, characterized by: It comprises a housing (1), a control panel (2) is installed inside the housing (1), one side of the control panel (2) is electrically connected to a light panel (3), one side of the light panel (3) is provided with a front panel (4), and the front panel (4) is fixedly connected to the housing (1) by a plurality of fixing bolts; Use USB TYPE-C power supply, support PD, or QC protocol charger, U1 CH224K decoy chip, so that the maximum input is spoofed to 20V. When using a 5V charger, the power supply from U8 HT7533 supplies 3.3V for the back-end control part. When using a QC or PD charger, the power supply from U3 ME3116DC-DC step-down chip to 5V is used for the back-end control part and the cooling fan (5). The MCU will detect the input voltage to determine the maximum power of the fill light; The DIM1 and DIM2 nodes are output by the MCU as PWM signals, which are filtered by RC and then enter the current feedback signal to adjust the LED current. The J2 fan (5) interface is enabled when using a QC or PD charger and provides LED heat dissipation at high power. When the upper temperature limit is detected, Q1 is controlled to turn on the fan (5), the FAN-PWM node, to control the fan (5) speed and adjust the heat dissipation.

2. The energy-saving LED color temperature adjustable fill light according to claim 1, characterized in that: A mounting notch is provided on one side surface of the control panel (2), and a fan (5) is provided inside the mounting notch.

3. The energy-saving LED color temperature adjustable fill light according to claim 1, characterized in that: A plurality of universal nuts for camera tripods are embedded in the bottom of the housing (1).

4. The energy-saving LED color temperature adjustable fill light according to claim 1, characterized in that: The lamp board (3) is made of an LED aluminum substrate.

5. The energy-saving LED color temperature adjustable fill light according to claim 1, characterized in that: The front panel (4) is made of a transparent acrylic material.

Images