Light focusing and floodlight conversion control circuit and lighting device

Abstract

The utility model discloses a light gathering and floodlight conversion control circuit and a lighting device, the light gathering and floodlight conversion control circuit is applied to the lighting device, and the light gathering and floodlight conversion control circuit comprises an LED, an electric control diffusion sheet, an acceleration sensor, an MCU unit and a driving circuit; wherein the driving circuit comprises an LED illumination driving circuit and a diffusion sheet driving circuit; the LED is electrically connected with the MCU unit through the LED illumination driving circuit; the electric control diffusion sheet is electrically connected with the MCU unit through the diffusion sheet driving circuit; the acceleration sensor is electrically connected with the MCU unit; in the moving or static process of the lighting device, the MCU unit controls the size of the lighting light spot of the electric control diffusion sheet according to an input signal of the acceleration sensor. According to the technical scheme provided by the utility model, the diffusion effect of the electric control diffusion sheet is changed through the acceleration value of the acceleration sensor, so that the spot size of the light beam is changed, and the automatic switching between the condensation effect and the floodlight effect is realized.

Description

Technical Field

[0001] The utility model relates to the field of mobile lighting equipment, in particular to a converging and diverging light conversion control circuit and a lighting device. Background Art

[0002] Mobile lighting devices with converging and diverging light conversion functions are commonly used in outdoor sports, exploration, and search and rescue scenarios. During movement, they can be converted into diverging light to increase the diffusion range of lighting, and when the lighting device is stationary or stable, it is converted into converging light. For current headlamps or flashlights, the conversion between converging and diverging light is achieved by manually operating physical devices such as buttons or knobs, which is not convenient enough. In important occasions such as emergency search and rescue, the frequent manual switching method also affects the search and rescue efficiency. Content of the Utility Model

[0003] To overcome the shortcomings of the prior art, the utility model provides a converging and diverging light conversion control circuit. By changing the diffusion effect of the electrically controlled diffuser through the acceleration value of the acceleration sensor, the spot size of the light beam is changed, thereby realizing the automatic switching between the converging light effect and the diverging light effect.

[0004] A converging and diverging light conversion control circuit, which is applied to a lighting device and includes: an LED, an electrically controlled diffuser, an acceleration sensor, an MCU unit, and a driving circuit;

[0005] Among them, the driving circuit includes an LED lighting driving circuit and a diffuser driving circuit; the LED is electrically connected to the MCU unit through the LED lighting driving circuit; the electrically controlled diffuser is electrically connected to the MCU unit through the diffuser driving circuit; the acceleration sensor is electrically connected to the MCU unit;

[0006] During the movement or stillness of the lighting device, the MCU unit controls the lighting spot size of the electrically controlled diffuser according to the input signal of the acceleration sensor.

[0007] Preferably, the diffuser driving circuit is a boost circuit.

[0008] Preferably, the LED lighting driving circuit is a voltage-limiting constant-current circuit.

[0009] Preferably, the acceleration sensor includes a mass block, a damper, an elastic element, a sensitive element, and an adaptation circuit.

[0010] Preferably, the MCU unit is a single-chip microcomputer.

[0011] Preferably, it further includes a power supply module, and the power supply module is used to supply power to the converging and diverging light conversion control circuit.

[0012] A lighting device includes a device body, and the above-mentioned converging and diverging light conversion control circuit is installed on the device body.

[0013] After being powered on, the converging and diverging light conversion control circuit and the lighting device provided by the present utility model detect an acceleration value signal generated when the lighting device is moving or stationary by an acceleration sensor, and transmit it to the MCU unit through a circuit. The MCU unit outputs a driving signal for controlling the electro-control diffuser sheet based on the acceleration value through calculation and analysis, adjusts the lighting spot (beam angle) size of the electro-control diffuser sheet, and realizes the effect of automatic converging and diverging light conversion, so as to automatically gradually change into diverging light during the movement. When it is not moving or the movement amplitude is small, it gradually changes into converging light, reducing the manual adjustment operation and alleviating the operation complexity. Description of the Drawings

[0014] Figure 1 It is a module diagram of the converging and diverging light conversion control circuit in an embodiment of the present utility model;

[0015] Figure 2 It is a working flow chart of the converging and diverging light conversion control circuit in an embodiment of the present utility model;

[0016] Figure 3 It is a schematic diagram of the use of the electro-control diffuser sheet in an embodiment of the present utility model;

[0017] Figure 4 It is a schematic diagram of the use effect of the electro-control diffuser sheet in an embodiment of the present utility model. Detailed Embodiments

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] A converging and diverging light conversion control circuit, as Figures 1 to 4 shown, this converging and diverging light conversion control circuit is applied to a lighting device and includes: an LED, an electro-control diffuser sheet, an acceleration sensor, an MCU unit and a driving circuit;

[0020] Among them, the driving circuit includes an LED lighting driving circuit and a diffuser sheet driving circuit; the LED is electrically connected to the MCU unit through the LED lighting driving circuit; the electro-control diffuser sheet is electrically connected to the MCU unit through the diffuser sheet driving circuit; the acceleration sensor is electrically connected to the MCU unit;

[0021] During the movement or stillness of the lighting device, the MCU unit controls the lighting spot size of the electro-control diffuser sheet according to the input signal of the acceleration sensor.

[0022] Specifically, the MCU unit uses a single-chip microcomputer, but is not limited thereto. The LED serves as the light source; the LED lighting drive circuit is used to enable the LED, for example, a voltage-limiting constant-current circuit is adopted.

[0023] The electronically controlled diffuser is a diffuser that can achieve stepless adjustment of the illumination spot size or beam angle by adjusting the voltage. Refer to Figure 3 , 4 , and it can diffuse the spot size with the magnitude of the voltage to achieve stepless adjustment. The diffuser drive circuit is a circuit module that provides a varying voltage for the electronically controlled diffuser according to the control signal provided by the single-chip microcomputer, and generally a boost circuit is adopted.

[0024] The acceleration sensor is used to measure the acceleration of an object, and converts the sensed acceleration into an available output electrical signal. For example, in one implementation, the acceleration sensor includes a mass block, a damper, an elastic element, a sensitive element, and an adaptation circuit. During the acceleration process, the acceleration sensor measures the inertial force received by the mass block, and obtains the acceleration value by using Newton's second law.

[0025] The principle of the converging and diverging light conversion control circuit is: the single-chip microcomputer changes the diffusion effect of the electronically controlled diffuser through the acceleration value of the acceleration sensor, thereby changing the spot size of the light beam.

[0026] The working process of the converging and diverging light conversion control circuit is as follows: after power-on, initialization settings are first performed and the LED lighting is turned on; then the MCU unit checks the acceleration sensor signal T and determines whether the lighting device is in motion; if the lighting device is in motion, according to the sensor acceleration value T, a corresponding instruction U for driving the diffuser is output to expand the spot to achieve the diverging light effect; if the lighting device is stationary, according to the sensor acceleration value T, a corresponding instruction Q for driving the diffuser is output to shrink the spot to achieve the converging light effect.

[0027] Furthermore, it further includes an internal or external power supply module, and the power supply module is used to supply power to the converging and diverging light conversion control circuit.

[0028] A lighting device includes a device body, and the above-mentioned converging and diverging light conversion control circuit is installed on the device body. In practical applications, the lighting device can be a flashlight, a headlamp, etc., but is not limited thereto. Taking the emergency lighting device used in the search and rescue process as an example, based on the converging and diverging light conversion control circuit, it can reduce the actions when manually adjusting the spot, save time, and at the same time reduce the probability of strong light interfering with teammates when moving the lighting device, reduce the risk of being dazzled by strong light, and can provide an obvious converging light display when locking the target, providing a direction for subsequent search and rescue.

[0029] The above is the elaboration of the poly-floodlight conversion control circuit and lighting device of the present utility model, which is used to help understand the present utility model; however, the implementation manners of the present utility model are not limited by the above embodiments. Any changes, modifications, substitutions, combinations, and simplifications made without departing from the principle of the present utility model shall be equivalent replacement manners and are all included in the protection scope of the present utility model.

Claims

1. A focusing and flooding light conversion control circuit, characterized in that: The focusing and flooding light conversion control circuit is applied to a lighting device and comprises: an LED, an electrically controlled diffuser, an acceleration sensor, an MCU unit and a driving circuit; Wherein, the driving circuit includes an LED lighting driving circuit and a diffusion sheet driving circuit; the LED is electrically connected to the MCU unit via the LED lighting driving circuit; the electrically controlled diffusion sheet is electrically connected to the MCU unit via the diffusion sheet driving circuit; the acceleration sensor is electrically connected to the MCU unit; When the lighting device is moving or stationary, the MCU unit controls the size of the lighting spot of the electrically controlled diffuser according to the input signal of the acceleration sensor.

2. The focusing and flooding light conversion control circuit according to claim 1, characterized in that: The diffusion plate driving circuit is a boost circuit.

3. The focusing and flooding light conversion control circuit according to claim 1, characterized in that: The LED lighting drive circuit is a voltage-limited constant-current circuit.

4. The focusing and flooding light conversion control circuit according to claim 1, characterized in that: The acceleration sensor comprises a mass block, a damper, an elastic element, a sensitive element and an adjustment circuit.

5. The focusing and flooding light conversion control circuit according to claim 1, characterized in that: The MCU unit is a single chip microcomputer.

6. The focusing and flooding light conversion control circuit according to any one of claims 1 to 5, characterized in that: It also includes a power supply module, which is used to supply power to the focusing and flooding conversion control circuit.

7. A lighting device, characterized in that: It comprises a device body, on which is mounted the focusing and flooding light conversion control circuit as described in any one of claims 1 to 6.

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