Light shape control circuit, lighting device and light shape control method

Abstract

The invention discloses a light shape control circuit, lighting equipment and a light shape control method. The light shape control circuit comprises a light source assembly; the control end of the light source main control circuit is connected with the controlled end of the light source assembly; the output end of the inclination angle detection circuit is connected with the input end of the light source main control circuit, and the inclination angle detection circuit is used for detecting the inclination angle of the lighting equipment and outputting an inclination angle detection signal to the light source main control circuit; the light source master control circuit is used for determining the inclination angle of the lighting equipment according to the inclination angle detection signal and adjusting the shape of light emitted by the light source assembly. The problem that the lighting equipment cannot automatically adjust the light shape according to user requirements is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lighting technology, in particular to a light shape control circuit, a lighting device and a light shape control method. BACKGROUND

[0002] The lighting device emits different light shapes to adapt to different environments. The light shape transformation of the lighting device on the current market is usually achieved by adjusting the distance between the light source and the optical component, which requires a movable structure to realize the adjustment of spotlight or floodlight. Moreover, the current lighting device controls the light shape transformation through a button, and does not have the function of automatically adjusting the light shape according to the user's demand. SUMMARY

[0003] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a light shape control circuit, a lighting device and a light shape control method to solve the problem that the lighting device cannot automatically adjust the light shape according to the user's demand.

[0004] The technical scheme of the present application is as follows: A light shape control circuit applied to a lighting device, comprising: a light source assembly; a light source master control circuit, a control end of the light source master control circuit being connected with a controlled end of the light source assembly; a tilt angle detection circuit, an output end of the tilt angle detection circuit being connected with an input end of the light source master control circuit, the tilt angle detection circuit being used for detecting the tilt angle of the lighting device and outputting a tilt angle detection signal to the light source master control circuit; the light source master control circuit being used for determining the tilt angle of the lighting device according to the tilt angle detection signal and adjusting the light shape emitted by the light source assembly.

[0005] Optionally, the light source master control circuit comprises: a master control chip, an input end of the master control chip being connected with an output end of the tilt angle detection circuit, the master control chip being used for determining the tilt angle of the lighting device according to the tilt angle detection signal and outputting a light shape control signal according to the tilt angle; a driving circuit, an input end of the driving circuit being connected with an output end of the master control chip, a driving end of the driving circuit being connected with the controlled end of the light source assembly, the driving circuit being used for driving the adjustment of the light shape emitted by the light source assembly according to the light shape control signal.

[0006] Optionally, the tilt angle detection circuit comprises: a gravity acceleration sensor, an output terminal of the gravity acceleration sensor being connected with an input terminal of the light source master control circuit, the gravity acceleration sensor being used for detecting acceleration change of the lighting device and outputting an acceleration signal to the light source master control circuit.

[0007] Optionally, the light source assembly comprises: a plurality of LED chips, controlled terminals of the plurality of LED chips being connected with control terminals of the light source master control circuit; the light source master control circuit being used for controlling the lighting-on or lighting-off of one or more of the LED chips to adjust the light shape emitted by the light source assembly; and / or, the light source master control circuit being used for controlling the light emitting intensity of one or more of the LED chips to adjust the light shape emitted by the light source assembly.

[0008] Optionally, the light shape control circuit further comprises: a power supply circuit, an input terminal of the power supply circuit being used for connecting a power supply, an output terminal of the power supply circuit being connected with a power terminal of the light source assembly, the power supply circuit being used for converting the power supply to supply power to the light source assembly to make the light source assembly emit light.

[0009] Optionally, the light shape control circuit further comprises: a power switch circuit, an input terminal of the power switch circuit being connected with an output terminal of the power supply circuit, an output terminal of the power switch circuit being connected with a power terminal of the light source assembly, the power switch circuit being used for, when receiving an opening signal, conducting the electrical connection of the power supply circuit and the light source assembly to make the light source assembly power on and emit light; the power switch circuit being used for, when receiving a closing signal, disconnecting the electrical connection of the power supply circuit and the light source assembly, the light source assembly being powered off and stopping emitting light.

[0010] Optionally, the power switch circuit comprises a first MOS transistor, a first triode, a second triode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a Hall effect sensor, a drain of the first MOS transistor is connected with a power supply end of the light source assembly, a source of the first MOS transistor, a first end of the first resistor and a power supply end of the Hall effect sensor are connected with an output end of the power supply circuit, a gate of the first MOS transistor, a second end of the first resistor, a collector of the first triode and a collector of the second triode are interconnected, a base of the first triode, a first end of the second resistor and a first end of the third resistor are interconnected, a second end of the second resistor is connected with the light source master circuit, an emitter of the first triode, a second end of the third resistor, an emitter of the second triode and a second end of the fifth resistor are grounded, a base of the second triode, a first end of the fourth resistor and a first end of the fifth resistor are interconnected, a second end of the fourth resistor is connected with an output end of the Hall effect sensor, and a ground end of the Hall effect sensor is grounded.

[0011] Optionally, the light shape control circuit further comprises: a control button connected with an input end of the light source master circuit, when the control button is triggered, a control trigger signal is output to the light source master circuit, and the light source master circuit is used for adjusting a light shape emitted by the light source assembly according to the control trigger signal.

[0012] The application further provides a lighting device comprising the light shape control circuit.

[0013] The application further provides a light shape control method applied to the light shape control circuit. obtaining an inclination angle detection signal and analyzing and processing the inclination angle detection signal to convert the inclination angle detection signal into a pitch angle; judging an operation intention of a user according to the pitch angle; adjusting a light shape emitted by the light source assembly according to the operation intention of the user.

[0014] The technical scheme of the present application is that the light shape control circuit is composed of a light source assembly, a light source master control circuit and an inclination angle detection circuit, wherein the control end of the light source master control circuit is connected with the controlled end of the light source assembly; the output end of the inclination angle detection circuit is connected with the input end of the light source master control circuit, the inclination angle detection circuit is used for detecting the inclination angle of the lighting device and outputting an inclination angle detection signal to the light source master control circuit; the light source master control circuit is used for determining the inclination angle of the lighting device according to the inclination angle detection signal and adjusting the light shape emitted by the light source assembly. Thus, the light shape control circuit of the present scheme can determine the user's requirement for light shape spotlight or floodlight by detecting the inclination angle of the lighting device, and then adjust the light shape emitted by the light source assembly, thereby realizing the function of automatically adjusting the light shape according to the user's requirement. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0016] Figure 1 is a functional module schematic diagram of an embodiment of the light shape control circuit of the present application.

[0017] Figure 2 is a functional module schematic diagram of another embodiment of the light shape control circuit of the present application.

[0018] Figure 3 is a circuit structure schematic diagram of an embodiment of the master control chip in the light shape control circuit of the present application.

[0019] Figure 4 is a circuit structure schematic diagram of an embodiment of the driving circuit in the light shape control circuit of the present application.

[0020] Figure 5 is a structure diagram of an embodiment of the light source assembly in the light shape control circuit of the present application.

[0021] Figure 6 is a functional module schematic diagram of still another embodiment of the light shape control circuit of the present application.

[0022] Figure 7 is a circuit structure schematic diagram of an embodiment of the power switch circuit in the light shape control circuit of the present application.

[0023] Figure 8 is a method step flow chart of an embodiment of the light shape control method of the present application.

[0024] Explanation of reference signs: 10, tilt angle detection circuit; 11, gravity acceleration sensor; 20, light source master control circuit; 21, master control chip; 22, driving circuit; 30, light source assembly; 31, LED chip; 40, power supply circuit; 50, power switch circuit; 60, control button; Q1, first MOS tube; Q2, first triode; Q3, second triode; R1, first resistor; R2, second resistor; R3, third resistor; R4, fourth resistor; R5, fifth resistor; U1, Hall effect sensor. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and effects of the present application clearer and more explicit, the present application is further described in detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0026] In the embodiments and patent claims, unless the article is specifically limited, "one", "an", "said" and "the" can also include plural forms. If the description of the embodiments of the present application involves "first", "second", etc., the description of "first", "second", etc. is only for the purpose of description and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0027] It should be further understood that the phrase "comprising" used in the specification of the present application means that the features, integers, steps, operations, elements and / or components exist, 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 said to be "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there can be an intermediate element. In addition, "connection" or "coupling" used herein can include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any single unit and all combinations of the associated listed items.

[0028] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as that generally understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood as having meanings consistent with those in the prior art, and should not be interpreted with idealized or overly formal meanings unless specifically defined as such.

[0029] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If 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 invention.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The technical solution of this invention 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, the light shape control circuit of this solution 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.

[0035] Reference Figure 2In 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.

[0036] 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 4 The 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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 5The 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; and 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 by forming different light spots in this embodiment is for reference only and does not impose specific limitations.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] The present invention also proposes a lighting device.

[0052] In one embodiment, the lighting device includes the light pattern control circuit described above. It is understood that, since the above-described light pattern control circuit is used in the lighting device of the present invention, the embodiments of the lighting device of the present invention include all the technical solutions of all embodiments of the above-described light pattern control circuit, and the achieved technical effects are exactly the same, and will not be repeated here.

[0053] The present invention also proposes an optical shape control method for use in the optical shape control circuit described above.

[0054] Reference Figure 8 In one embodiment, the light shape control method includes the following steps: S100: Acquire the tilt angle detection signal, analyze and process it to convert it into a pitch angle; S200: Determines the user's operational intent based on the pitch angle; S300: Adjust the light pattern emitted by the light source assembly 30 according to the user's operating intention.

[0055] In this embodiment, the acceleration data output by the gravity acceleration sensor 11, i.e., the tilt angle detection signal, is acquired. This data is then analyzed and processed using a pre-set trigonometric function algorithm to convert it into the pitch angle of the lighting device (e.g., from 0° horizontally to 90° vertically downwards). The obtained pitch angle is filtered using mean filtering and Kalman filtering to remove slight jitter. The user's operational intention is determined based on the pitch angle. If it is determined that an enhanced focusing effect is needed, for example, tilting upwards from 90°, the light emitted by the light source component 30 can be adjusted to focus the light. Specifically, the power of the LED chips 31 responsible for focusing and floodlighting can be precisely adjusted, 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 it is determined that an enhanced floodlight effect is needed, for example, tilting downwards from 0°, the LED light source responsible for floodlighting can operate at higher power while reducing or turning off the power of the LED light source responsible for focusing, thereby enhancing the floodlight effect. Alternatively, different combinations of light-emitting surface shapes can be set by presetting specific pitch angles to achieve the transformation between different light shapes under different states. The specific settings can be made according to the actual situation and user needs.

[0056] It should be understood that the application of the present invention 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.

10. A method for controlling the optical shape of a light source applied to the optical shape control circuit as described in any one of claims 1-8, characterized in that, Includes the following steps: Acquire tilt angle detection signals, analyze and process them to convert them into pitch angles; Determine the user's intention based on the pitch angle; Adjust the light pattern emitted by the light source component according to the user's operating intention.

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