Light shape control circuit and lighting device

Abstract

This utility model discloses a light pattern control circuit and a lighting device. The light pattern control circuit includes: a light source assembly; a main control circuit for the light source, the control terminal of which is connected to the controlled terminal of the light source assembly; and a tilt angle detection circuit, the output terminal of which is connected to the input terminal of the main control circuit. The tilt angle detection circuit detects the tilt angle of the lighting device and outputs a tilt angle detection signal to the main control circuit. The main control circuit determines the tilt angle of the lighting device based on the tilt angle detection signal and adjusts the light pattern emitted by the light source assembly. This utility model solves the problem that lighting devices cannot automatically adjust the light pattern according to user needs.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a light pattern control circuit and lighting device. Background Technology

[0002] Lighting equipment emits different light patterns to adapt to different environments. Currently, the light pattern changes in lighting equipment on the market are usually achieved by adjusting the distance between the light source and optical components, requiring a movable structure to achieve focused or flooded lighting. Furthermore, current lighting equipment controls light pattern changes via buttons and lacks the function of automatically adjusting the light pattern according to user needs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a light pattern control circuit and lighting device to solve the problem that lighting devices cannot automatically adjust the light pattern according to user needs.

[0004] The technical solution of this utility model is as follows: A light pattern control circuit, applied to lighting equipment, includes: Light source components; A main control circuit for the light source, wherein the control terminal of the main control circuit for the light source is connected to the controlled terminal of the light source assembly; A tilt angle detection circuit is provided, the output of which is connected to the input of the main control circuit of the light source. The tilt angle detection circuit is used to detect the tilt angle of the lighting equipment and output a tilt angle detection signal to the main control circuit of the light source. The main control circuit of the light source is used to determine the tilt angle of the lighting device based on the tilt angle detection signal, and to adjust the light pattern emitted by the light source component.

[0005] Optionally, the light source main control circuit includes: The main control chip has its input terminal connected to the output terminal of the tilt angle detection circuit. The main control chip is used to determine the tilt angle of the lighting device based on the tilt angle detection signal and output a light pattern control signal based on the tilt angle. The driving circuit has its input terminal connected to the output terminal of the main control chip and its driving terminal connected to the controlled terminal of the light source component. The driving circuit is used to drive and adjust the light pattern emitted by the light source component according to the light pattern control signal.

[0006] Optionally, the tilt angle detection circuit includes: A gravity acceleration sensor is provided, the output of which is connected to the input of the main control circuit of the light source. The gravity acceleration sensor is used to detect the acceleration changes of the lighting equipment and output an acceleration signal to the main control circuit of the light source.

[0007] Optionally, the light source assembly includes: Multiple LED chips, with the controlled terminals of the multiple LED chips connected to the control terminals of the main control circuit of the light source; The main control circuit of the light source is used to control the lighting or extinguishing of one or more of the LED chips to adjust the light pattern emitted by the light source assembly; and / or, The main control circuit of the light source is used to control the luminous intensity of one or more of the LED chips in order to adjust the light pattern emitted by the light source assembly.

[0008] Optionally, the light shape control circuit further includes: The power supply circuit has an input terminal for connecting to a power source and an output terminal for connecting to the power source of the light source assembly. The power supply circuit converts the power source and supplies it to the light source assembly so that the light source assembly can emit light.

[0009] Optionally, the light shape control circuit further includes: A power switch circuit is provided, wherein the input terminal of the power switch circuit is connected to the output terminal of the power supply circuit, and the output terminal of the power switch circuit is connected to the power supply terminal of the light source assembly. The power switch circuit is used to conduct the electrical connection between the power supply circuit and the light source assembly when receiving an on signal, so that the light source assembly is powered on and emits light; the power switch circuit is used to disconnect the electrical connection between the power supply circuit and the light source assembly when receiving an off signal, so that the light source assembly is powered off and stops emitting light.

[0010] Optionally, the power switch circuit includes a first MOSFET, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a Hall effect sensor. The drain of the first MOSFET is connected to the power supply terminal of the light source assembly. The source of the first MOSFET, the first end of the first resistor, and the power supply terminal of the Hall effect sensor are connected to the output terminal of the power supply circuit. The gate of the first MOSFET, the second end of the first resistor, the collector of the first transistor, and the collector of the second transistor are interconnected. The base of the first transistor, the first end of the second resistor, and the first end of the third resistor are interconnected. The second end of the second resistor is connected to the main control circuit of the light source. The emitter of the first transistor, the second end of the third resistor, the emitter of the second transistor, and the second end of the fifth resistor are grounded. The base of the second transistor, the first end of the fourth resistor, and the first end of the fifth resistor are interconnected. The second end of the fourth resistor is connected to the output terminal of the Hall effect sensor. The ground terminal of the Hall effect sensor is grounded.

[0011] Optionally, the light shape control circuit further includes: A control button is connected to the input terminal of the main control circuit of the light source. When the control button is triggered, it outputs a control trigger signal to the main control circuit of the light source. The main control circuit of the light source is used to adjust the light pattern emitted by the light source component according to the control trigger signal.

[0012] This utility model also proposes a lighting device, including the light pattern control circuit described above.

[0013] This utility model's technical solution comprises a light shape control circuit consisting of a light source component, a main light source control circuit, and a tilt angle detection circuit. The control terminal of the main light source control circuit is connected to the controlled terminal of the light source component. The output terminal of the tilt angle detection circuit is connected to the input terminal of the main light source control circuit. The tilt angle detection circuit detects the tilt angle of the lighting equipment and outputs a tilt angle detection signal to the main light source control circuit. The main light source control circuit determines the tilt angle of the lighting equipment based on the tilt angle detection signal and adjusts the light shape emitted by the light source component. Thus, this light shape control circuit can determine the user's need for focused or flooded light by detecting the tilt angle of the lighting equipment, and then adjust the light shape emitted by the light source component, achieving the function of automatically adjusting the light shape according to the user's needs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a functional module schematic diagram of an embodiment of the optical shape control circuit of this utility model.

[0016] Figure 2 This is a functional module schematic diagram of another embodiment of the optical control circuit of this utility model.

[0017] Figure 3 This is a schematic diagram of the circuit structure of the main control chip in one embodiment of the optical shape control circuit of this utility model.

[0018] Figure 4 This is a schematic diagram of the circuit structure in one embodiment of the drive circuit in the optical shape control circuit of this utility model.

[0019] Figure 5 This is a structural diagram of an embodiment of the light source component in the light shape control circuit of this utility model.

[0020] Figure 6 This is a functional module schematic diagram of another embodiment of the optical control circuit of this utility model.

[0021] Figure 7 This is a schematic diagram of the circuit structure of the power switch circuit in one embodiment of the optical control circuit of this utility model.

[0022] Explanation of reference numerals in the attached diagram: 10, tilt angle detection circuit; 11, gravity acceleration sensor; 20, light source main control circuit; 21, main control chip; 22, drive circuit; 30, light source assembly; 31, LED chip; 40, power supply circuit; 50, power switch circuit; 60, control button; Q1, first MOSFET; Q2, first transistor; Q3, second transistor; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; U1, Hall effect sensor. Detailed Implementation

[0023] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of this utility model involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0025] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when an element is referred to as "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0026] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0027] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] Lighting equipment emits different light patterns to adapt to different environments. Currently, the light pattern changes in lighting equipment on the market are usually achieved by adjusting the distance between the light source and optical components, requiring a movable structure to achieve focused or flooded lighting. Furthermore, current lighting equipment controls light pattern changes via buttons and lacks the function of automatically adjusting the light pattern according to user needs.

[0029] To address the aforementioned problems, this invention proposes a light pattern control circuit for use in lighting equipment. The lighting equipment can be a flashlight, headlamp, or other similar device.

[0030] Reference Figure 1 In one embodiment, the light pattern control circuit includes: Light source assembly 30; The main control circuit 20 for the light source is connected to the controlled end of the light source assembly 30. A tilt angle detection circuit 10 is provided, the output of which is connected to the input of the light source main control circuit 20. The tilt angle detection circuit 10 is used to detect the tilt angle of the lighting equipment and output a tilt angle detection signal to the light source main control circuit 20. The main control circuit 20 of the light source is used to determine the tilt angle of the lighting device based on the tilt angle detection signal, and to adjust the light pattern emitted by the light source assembly 30.

[0031] In this embodiment, the light source component 30 can be composed of multiple light-emitting devices, such as LED chips 31 or fluorescent lamps. Taking LED chip 31 as an example, a central LED chip 31 is set, and the remaining LED chips 31 are arranged around the central LED chip 31. When the central LED chip 31 is lit, it is a focused light pattern, and when the surrounding LED chips 31 are lit, it is a flood light pattern. The specific light pattern control can also be adjusted according to the actual situation and user needs to control the on / off state of the LEDs and the corresponding power level. The tilt angle detection circuit 10 can detect the acceleration changes of the lighting device through the gravity acceleration sensor 11. For example, if the gravity acceleration sensor 11 is installed inside the lighting device, and the lighting device is a headlamp, the user will tilt when looking up and down. The gravity acceleration sensor 11 will sense these changes and transmit the detected acceleration data, i.e., the tilt angle detection signal, to the light source main control circuit 20. The processor in the light source main control circuit 20 can analyze and process these data through a pre-set trigonometric function algorithm to convert them into the pitch angle of the lighting device, thereby determining the user's operating intention. If the processor determines that an enhanced focusing effect is needed, such as by tilting the light source component 30 upwards, it can adjust the light pattern emitted by the light source component 30 to focus the light. Specifically, this can be achieved by precisely adjusting the power of the LED chips 31 responsible for focusing and floodlighting, allowing the LED chip 31 responsible for focusing to operate at higher power while reducing or turning off the power of the LED chip 31 responsible for floodlighting, thereby enhancing the focusing effect. Conversely, if the processor determines that an enhanced floodlighting effect is needed, such as by tilting the light source downwards, it can allow the LED light source responsible for floodlighting to operate at higher power while reducing or turning off the power of the LED light source responsible for focusing the light, thereby enhancing the floodlighting effect. Alternatively, different combinations of light-emitting surface shapes can be set by presetting specific tilt angles to achieve changes between different light patterns under different conditions. The specific settings can be customized according to actual conditions and user needs.

[0032] This utility model's technical solution comprises a light shape control circuit consisting of a light source component 30, a light source main control circuit 20, and a tilt angle detection circuit 10. The control terminal of the light source main control circuit 20 is connected to the controlled terminal of the light source component 30. The output terminal of the tilt angle detection circuit 10 is connected to the input terminal of the light source main control circuit 20. The tilt angle detection circuit 10 detects the tilt angle of the lighting equipment and outputs a tilt angle detection signal to the light source main control circuit 20. The light source main control circuit 20 determines the tilt angle of the lighting equipment based on the tilt angle detection signal and adjusts the light shape emitted by the light source component 30. Thus, this light shape control circuit can determine the user's need for focused or flooded light by detecting the tilt angle of the lighting equipment, and then adjust the light shape emitted by the light source component 30, achieving the function of automatically adjusting the light shape according to the user's needs.

[0033] Reference Figure 2 In one embodiment, the light source main control circuit 20 includes: The main control chip 21 has its input terminal connected to the output terminal of the tilt angle detection circuit 10. The main control chip 21 is used to determine the tilt angle of the lighting device based on the tilt angle detection signal and output a light pattern control signal based on the tilt angle. The driving circuit 22 has its input terminal connected to the output terminal of the main control chip 21, and its driving terminal connected to the controlled terminal of the light source assembly 30. The driving circuit 22 is used to drive and adjust the light pattern emitted by the light source assembly 30 according to the light pattern control signal.

[0034] In this embodiment, the main control circuit 20 of the light source can be composed of a main control chip 21 and a driving circuit 22. The main control chip 21 can be a digital signal processor (DSP), a programmable logic device (PLD), a field programmable gate array (FPGA), a microprocessor, an MCU, or other electronic components. The specific circuit structure of the main control chip 21 can be referred to... Figure 3 The settings are configured as follows: The main control chip 21 can determine the tilt angle of the lighting device through the tilt angle detection signal, and output a corresponding light shape control signal according to the tilt angle to control the light shape of the lighting device to be focused or flooded; the driving circuit 22 can be composed of multiple electronic components such as resistors, capacitors and inductors, and the specific circuit structure of the driving circuit 22 can be referred to... Figure 4The settings can be configured. By driving the multiple LED chips 31 in the light source assembly 30 to light up or turn off through the driving circuit 22, the light pattern emitted by the light source assembly 30 can be adjusted to be focused or diffused. The light pattern can also be controlled by increasing or decreasing the luminous power of the multiple LED chips 31. The specific number of LEDs on / off or the luminous power of the LED chips 31 can be set according to actual conditions and user needs.

[0035] Reference Figure 2 In one embodiment, the tilt angle detection circuit 10 includes: A gravity acceleration sensor 11 is provided, the output of which is connected to the input of the main control circuit 20 of the light source. The gravity acceleration sensor 11 is used to detect the acceleration change of the lighting device and output an acceleration signal to the main control circuit 20 of the light source.

[0036] In this embodiment, the tilt angle detection circuit 10 can use the gravity acceleration sensor 11 to detect changes in the acceleration of the lighting device and output the acceleration signal to the light source main control circuit 20, so that the light source main control circuit 20 can determine the tilt of the lighting device based on the acceleration signal. The gravity acceleration sensor 11 can be connected to the main control chip 21 in the light source main control circuit 20 through an I2C interface for data transmission.

[0037] In one embodiment, the light source assembly 30 includes: Multiple LED chips 31, the controlled terminals of the multiple LED chips 31 are connected to the control terminals of the light source main control circuit 20; The main control circuit 20 of the light source is used to control the lighting or extinguishing of one or more of the LED chips 31, so as to adjust the light pattern emitted by the light source assembly 30; and / or, The main control circuit 20 of the light source is used to control the light intensity of one or more of the LED chips 31 in order to adjust the light pattern emitted by the light source assembly 30.

[0038] In this embodiment, the light source component 30 is composed of multiple LED chips 31. By controlling the lighting or extinguishing of one or more LED chips 31, the light emitted by the light source component 30 can be adjusted to be focused or diffused. For example, the multiple LED chips 31 of the light source component 30 can be divided into a central LED chip 31 and peripheral LED chips 31. The specific number and arrangement of the LED chips 31 can be set according to the actual situation and user needs. The peripheral LED chips 31 can be arranged around the central LED chip 31. Specifically, the peripheral LED chips 31 can be arranged in a ring around the central LED chip 31, or the peripheral LED chips 31 can be arranged in a regular polygon around the central LED chip 31. The specific LED chip 31 arrangement can be referred to Figure 5 Thus, when the central LED chip 31 is lit, it produces a focused beam of light, while when the peripheral LED chips 31 are lit, it produces a diffused beam of light. Furthermore, specific beam control also includes the shape control of the light spot, for example... Figure 5 Nine LED chips are installed, numbered (1,1), (1,2), (1,3), (2,1), (2,2), (2,3), (3,1), (3,2), and (3,3), where (1,1) represents... Figure 5 The LED chip in the first row and first column, numbered (1,2), represents... Figure 5 The LED chips in the first row and second column are numbered similarly to the others. If the LED chip numbered (2,2) is lit, a circular light spot will be formed; if the LED chips numbered (1,2), (2,1), (2,2), (2,3), and (3,2) are lit, a diamond-shaped light spot will be formed; if the LED chips numbered (1,1), (1,3), (2,2), (3,1), and (3,3) are lit, a rectangular light spot will be formed. It is understood that different light spots have different luminous areas, resulting in different illuminated areas. Furthermore, different shapes of light spots can meet different lighting needs. For example, a circular light spot is suitable for general lighting and long-distance lighting, while a rectangular light spot may be more suitable for illuminating specific areas, such as a workbench or reading area. Additionally, light spots of specific shapes can be used to create visual effects or as indicators and signs. The control of LED chip lighting using different light spots in this embodiment is for reference only and does not impose specific limitations.

[0039] It should be noted that in this embodiment, the light pattern emitted by the light source component 30 can also be adjusted by controlling the luminous intensity of the LED chip 31. For example, increasing the current or voltage can increase the luminous intensity of the LED chip 31, typically in conjunction with a focusing optical design to form a concentrated, long-range beam with a small and bright spot, suitable for long-distance searching. Alternatively, decreasing the current can weaken the luminous intensity of the LED chip 31, making the light more diffused and expanding the floodlight area, suitable for close-range illumination or reducing glare. Different brightness levels (such as 100%, 50%, 20%) can also be used to dynamically adjust the coverage and center intensity of the light spot, achieving "focused-flood" switching. Furthermore, pulse width modulation (PWM) can be used to quickly switch the LED chip 31, simulating brightness changes by altering the duty cycle. Although this primarily affects brightness perception, at high frequencies, it can be used in conjunction with optical diffusers or reflectors to fine-tune the uniformity of the light spot.

[0040] Additionally, by controlling the flashing frequency of one or more LED chips 31, the effect of dimming the light pattern can also be achieved. When the LED chip 31 flashes at a certain frequency, the human eye experiences visual persistence. If the flashing frequency is low, the light pattern will appear discontinuous during the flashing process, making it seem discontinuous. When the flashing frequency reaches a certain level (generally considered to be above 24Hz), the human eye will perceive the light pattern as continuous, but visual interference caused by the flashing may affect the judgment of the true shape and boundaries of the light pattern. For example, low-frequency flashing (1-10Hz) can be used for emergency distress signals (such as SOS signals) and warning signs, attracting attention through alternating bright and dark areas. Although it does not directly change the light pattern, dynamic brightness changes can affect the human eye's perception of the light spot boundaries. High-frequency flashing (>50Hz) is close to the human eye's visual persistence limit (such as 100Hz), seemingly providing stable light, but can reduce motion blur (such as running headlights), or achieve intelligent response in conjunction with sensors (such as automatic adjustment according to ambient light). Furthermore, by programming to quickly switch the flashing sequence of LED chips 31 in different positions, a specific light pattern can be synthesized using the visual persistence effect. For example, in directional indication, the left and right LED chips 31 in the headlight flash alternately, simulating an arrow-shaped light spot to indicate direction. Specific light pattern control can also be adjusted according to actual conditions and user needs to control the LED's on / off state and corresponding power level.

[0041] Reference Figure 6 In one embodiment, the light pattern control circuit further includes: The power supply circuit 40 has an input terminal for connecting to a power source and an output terminal for connecting to the power source terminal of the light source assembly 30. The power supply circuit 40 converts the power source to supply power to the light source assembly 30 so that the light source assembly 30 emits light.

[0042] In this embodiment, the power supply circuit 40 can be implemented using a DC-DC circuit. The power supply circuit 40 converts the power supply voltage to a suitable operating voltage for the light source component 30, preventing damage caused by excessively high operating voltage or malfunction due to insufficient operating voltage. Powering the light source component 30 with the power supply circuit 40 enables it to emit light and allows for further adjustment of the light pattern.

[0043] Reference Figure 6 In one embodiment, the light pattern control circuit further includes: A power switch circuit 50 is provided, the input terminal of which is connected to the output terminal of the power supply circuit 40, and the output terminal of which is connected to the power supply terminal of the light source assembly 30. The power switch circuit 50 is used to connect the power supply circuit 40 and the light source assembly 30 when receiving an on signal, so that the light source assembly 30 is powered on and emits light; the power switch circuit 50 is used to disconnect the power supply circuit 40 and the light source assembly 30 when receiving an off signal, so that the light source assembly 30 is powered off and stops emitting light.

[0044] In this embodiment, the power switch circuit 50 can control the connection between the power supply circuit 40 and the light source component 30 to be on or off. This allows the connection to be cut off when power is not needed, avoiding increased power consumption, and the power switch circuit 50 also increases control flexibility. When the connection between the power supply circuit 40 and the light source component 30 is on, the light source component 30 is powered on and emits light, and the shape of the light emitted by the light source component 30 can be controlled as described in the above embodiment. When the connection between the power supply circuit 40 and the light source component 30 is off, the light source component is de-powered and stops emitting light.

[0045] Furthermore, referring to Figure 7 In one embodiment, the power switch circuit 50 includes a first MOSFET Q1, a first transistor Q2, a second transistor Q3, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a Hall effect sensor U1. The drain of the first MOSFET Q1 is connected to the power supply terminal of the light source assembly 30. The source of the first MOSFET Q1, the first terminal of the first resistor R1, and the power supply terminal of the Hall effect sensor U1 are connected to the output terminal of the power supply circuit 40. The gate of the first MOSFET Q1, the second terminal of the first resistor R1, the collector of the first transistor Q2, and the second resistor R5 are connected to the power supply circuit 40. The collectors of transistor Q3 are interconnected. The base of the first transistor Q2, the first end of the second resistor R2, and the first end of the third resistor R3 are interconnected. The second end of the second resistor R2 is connected to the main control circuit 20 of the light source. The emitter of the first transistor Q2, the second end of the third resistor R3, the emitter of the second transistor Q3, and the second end of the fifth resistor R5 are grounded. The base of the second transistor Q3, the first end of the fourth resistor R4, and the first end of the fifth resistor R5 are interconnected. The second end of the fourth resistor R4 is connected to the output terminal of the Hall effect sensor U1. The ground terminal of the Hall effect sensor U1 is grounded.

[0046] In this embodiment, the power switch circuit 50 can reduce the standby power consumption of the system. The Hall effect sensor U1 can be used as a power switch. When there is a single south or north magnetic field on the side facing the package marking, its transistor is locked in the on state and its output is low, causing the second transistor Q3 to be in the off state. The gate of the first MOSFET Q1 is pulled high, causing the first MOSFET Q1 to be in the off state. The circuit except for the Hall effect sensor U1 is in a completely power-off state. When there is no magnetic field, the Hall effect sensor U1 is locked in the off state and its output is high, causing the second transistor Q3 to be in the on state. The gate of the first MOSFET Q1 is pulled low, causing the first MOSFET Q1 to be in the on state. The power supply works normally to supply power to the light source component 30. In this way, the average power consumption of the circuit in standby mode is reduced to about 2-3uA. In battery-powered applications, the power switch circuit 50 in this embodiment can extend the working life of the power supply. The first transistor Q2 receives the control signal from the main control circuit 20 of the light source and turns on or off according to the control signal. The specific on / off state of the first transistor Q2 controlled by the control signal of the main control circuit 20 can be set according to the actual situation and user requirements. The resistor set in this embodiment can serve as a current limiter and voltage divider. The control of the Hall effect sensor U1 can be achieved by combining the other two omnipolar Hall effect sensors (U2 and U3) in the figure with a rotary switch and a tactile button with a single south or north magnetic field.

[0047] Reference Figure 6 In one embodiment, the light pattern control circuit further includes: The control button 60 is connected to the input terminal of the main control circuit 20 of the light source. When the control button 60 is triggered, it outputs a control trigger signal to the main control circuit 20 of the light source. The main control circuit 20 of the light source is used to adjust the light pattern emitted by the light source component 30 according to the control trigger signal.

[0048] In this embodiment, when the control button 60 is triggered by the user, it can output a corresponding control trigger signal to the light source main control circuit 20. The light source main control circuit 20 can then adjust the light pattern emitted by the light source component 30 to be either floodlight or spotlight according to the control trigger signal. Multiple control buttons 60 can be set, corresponding to various different light patterns. The specific number and corresponding light patterns can be set according to the actual situation and user needs.

[0049] This utility model also proposes a lighting device.

[0050] In one embodiment, the lighting device includes the light pattern control circuit described above. It is understood that, since the lighting device of this invention uses the aforementioned light pattern control circuit, the embodiments of the lighting device of this invention include all the technical solutions of all embodiments of the aforementioned light pattern control circuit, and the achieved technical effects are completely identical, and will not be repeated here.

[0051] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A light pattern control circuit, applied to lighting equipment, characterized in that, include: Light source components; A main control circuit for the light source, wherein the control terminal of the main control circuit for the light source is connected to the controlled terminal of the light source assembly; A tilt angle detection circuit is provided, the output of which is connected to the input of the main control circuit of the light source. The tilt angle detection circuit is used to detect the tilt angle of the lighting equipment and output a tilt angle detection signal to the main control circuit of the light source. The main control circuit of the light source is used to determine the tilt angle of the lighting device based on the tilt angle detection signal, and to adjust the light pattern emitted by the light source component.

2. The light pattern control circuit as described in claim 1, characterized in that, The main control circuit for the light source includes: The main control chip has its input terminal connected to the output terminal of the tilt angle detection circuit. The main control chip is used to determine the tilt angle of the lighting device based on the tilt angle detection signal and output a light pattern control signal based on the tilt angle. The driving circuit has its input terminal connected to the output terminal of the main control chip and its driving terminal connected to the controlled terminal of the light source component. The driving circuit is used to drive and adjust the light pattern emitted by the light source component according to the light pattern control signal.

3. The light pattern control circuit as described in claim 1, characterized in that, The tilt angle detection circuit includes: A gravity acceleration sensor is provided, the output of which is connected to the input of the main control circuit of the light source. The gravity acceleration sensor is used to detect the acceleration changes of the lighting equipment and output an acceleration signal to the main control circuit of the light source.

4. The light pattern control circuit as described in claim 1, characterized in that, The light source assembly includes: Multiple LED chips, with the controlled terminals of the multiple LED chips connected to the control terminals of the main control circuit of the light source; The main control circuit of the light source is used to control the lighting or extinguishing of one or more of the LED chips to adjust the light pattern emitted by the light source assembly; and / or, The main control circuit of the light source is used to control the luminous intensity of one or more of the LED chips in order to adjust the light pattern emitted by the light source assembly.

5. The light pattern control circuit as described in claim 1, characterized in that, The light pattern control circuit also includes: The power supply circuit has an input terminal for connecting to a power source and an output terminal for connecting to the power source of the light source assembly. The power supply circuit converts the power source and supplies it to the light source assembly so that the light source assembly can emit light.

6. The light pattern control circuit as described in claim 5, characterized in that, The light pattern control circuit also includes: A power switch circuit is provided, wherein the input terminal of the power switch circuit is connected to the output terminal of the power supply circuit, and the output terminal of the power switch circuit is connected to the power supply terminal of the light source assembly. The power switch circuit is used to conduct the electrical connection between the power supply circuit and the light source assembly when receiving an on signal, so that the light source assembly is powered on and emits light; the power switch circuit is used to disconnect the electrical connection between the power supply circuit and the light source assembly when receiving an off signal, so that the light source assembly is powered off and stops emitting light.

7. The light pattern control circuit as described in claim 6, characterized in that, The power switch circuit includes a first MOSFET, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, and a Hall effect sensor. The drain of the first MOSFET is connected to the power supply terminal of the light source assembly. The source of the first MOSFET, the first end of the first resistor, and the power supply terminal of the Hall effect sensor are connected to the output terminal of the power supply circuit. The gate of the first MOSFET, the second end of the first resistor, the collector of the first transistor, and the collector of the second transistor are interconnected. The base of the first transistor, the first end of the second resistor, and the first end of the third resistor are interconnected. The second end of the second resistor is connected to the main control circuit of the light source. The emitter of the first transistor, the second end of the third resistor, the emitter of the second transistor, and the second end of the fifth resistor are grounded. The base of the second transistor, the first end of the fourth resistor, and the first end of the fifth resistor are interconnected. The second end of the fourth resistor is connected to the output terminal of the Hall effect sensor. The ground terminal of the Hall effect sensor is grounded.

8. The light pattern control circuit as described in claim 1, characterized in that, The light pattern control circuit also includes: A control button is connected to the input terminal of the main control circuit of the light source. When the control button is triggered, it outputs a control trigger signal to the main control circuit of the light source. The main control circuit of the light source is used to adjust the light pattern emitted by the light source component according to the control trigger signal.

9. A lighting device, characterized in that, Includes the light pattern control circuit as described in any one of claims 1-8.

Images