Flash lamp

Abstract

The utility model provides a flash lamp, and belongs to the technical field of photographic light. The flash lamp comprises an LED flash lamp circuit and a xenon flash lamp circuit, the LED flash lamp circuit comprises a light-emitting device, a capacitance energy storage circuit and a first flash control circuit, and the light-emitting device can emit at least two kinds of flash light with different light-emitting parameters and combination of the light-emitting parameters through the capacitance energy storage circuit and the first flash control circuit. The LED flash lamp circuit can emit at least two kinds of flash with different light emitting parameters and the combination of the two kinds of flash. The xenon flash lamp circuit has a wide-spectrum sunlight-like flash irradiation function. The LED flash lamp circuit and the xenon flash lamp circuit are combined, so that the requirements of different flash effects in different shooting scenes can be met, and more personalized creation requirements can be fully met.

Description

Technical Field

[0001] This application relates to the field of photographic lighting, and particularly to a flash lamp. Background Art

[0002] A flash lamp is a photographic light-sensitive auxiliary accessory that can emit very strong light instantaneously for instant illumination of a dimly lit scene or for local fill light of the object to be photographed in a brightly lit scene. With the rapid development of digital technology and the rapid popularization of photographic and video applications, flash devices such as hot-shoe flash lamps are widely used in various shooting occasions because they can provide more professional flash effects.

[0003] Common flash lamps generally use xenon tubes as the flash light source. However, the spectral distribution of xenon lamps is close to sunlight. If a photographer wants to obtain different color temperature effects, a color temperature conversion filter is usually required. This operation is very inconvenient for users. With the development of technology, there are also flash lamps with constant-on LED fill lights, and the softer light of the fill lights can show more abundant details of the photographed object. However, in scenes that require high-brightness shooting or where the ambient light is too low, the flash lamp is still needed to illuminate the object to be photographed. Generally speaking, there are still many areas for improvement in existing flash lamps to meet the more diverse shooting needs and personalized creative pursuits of photographers. Utility Model Content

[0004] The main purpose of the embodiments of this application is to propose a flash lamp, including an LED flash lamp circuit and a xenon flash lamp circuit, which can meet the requirements of different flash effects in different shooting scenes to fully meet more personalized creative needs.

[0005] To achieve the above object, a first aspect of the embodiments of this application proposes a flash lamp, including an LED flash lamp circuit and a xenon flash lamp circuit, and the LED flash lamp circuit and the xenon flash lamp circuit are electrically connected. Among them, the LED flash lamp circuit includes:

[0006] A light-emitting device, including a first light-emitting unit and a second light-emitting unit, and the first light-emitting unit and the second light-emitting unit have different light-emitting parameters;

[0007] A capacitor energy storage circuit, the first end of the capacitor energy storage circuit is electrically connected to the light-emitting device, the second end of the capacitor energy storage circuit is grounded, and the first end of the capacitor energy storage circuit is also used to connect to a power supply voltage;

[0008] A first flash control circuit, electrically connected to the light-emitting device, for controlling the flash energy of the light-emitting device.

[0009] In an embodiment of the present application, the xenon flash lamp circuit includes a xenon lamp tube, the capacitor energy storage circuit, and a second flash control circuit; a first end of the capacitor energy storage circuit is further electrically connected to the xenon lamp tube, the second flash control circuit is electrically connected to the xenon lamp tube, and the second flash control circuit is configured to control the flash energy of the xenon lamp tube.

[0010] In an embodiment of the present application, the flash lamp further includes a main control circuit, and both the first flash control circuit and the second flash control circuit are electrically connected to the main control circuit.

[0011] In an embodiment of the present application, the flash lamp is a top-mounted flash lamp, and the flash lamp further includes a hot shoe interface. The hot shoe interface is connected to the main control circuit and is configured to transmit a flash trigger signal of an external device through the hot shoe interface and the main control circuit to the LED flash lamp circuit and the xenon flash lamp circuit, so that the light-emitting device and the xenon lamp tube flash simultaneously.

[0012] In an embodiment of the present application, the first flash control circuit includes:

[0013] An NMOS switch tube, a gate of the NMOS switch tube is electrically connected to a PWM control signal, a source of the NMOS switch tube is grounded, and the PWM control signal is configured to control the flash energy of the light-emitting device;

[0014] A freewheeling diode, an input end of the freewheeling diode is electrically connected to a drain of the NMOS switch tube, and an output end of the freewheeling diode is electrically connected to a first end of the light-emitting device;

[0015] A choke inductor, one end of the choke inductor is electrically connected to a second end of the light-emitting device, and the other end of the choke inductor is electrically connected to the input end of the freewheeling diode and the drain of the NMOS switch tube.

[0016] In an embodiment of the present application, the light-emitting device includes one or more groups of LED lamp groups. Each group of LED lamp groups includes one lamp bead or a plurality of lamp beads connected in series in sequence, and the groups of LED lamp groups are connected in parallel.

[0017] In an embodiment of the present application, the lamp beads included in each group of LED lamp groups include single-color temperature single-color lamp beads, multi-color lamp beads, multi-color temperature lamp beads, or lamp beads combined with multi-color temperature and multi-color.

[0018] In an embodiment of the present application, the number of the LED lamp groups is the same as the number of the first flash control circuits, and each of the first flash control circuits is correspondingly electrically connected to a group of LED lamp groups.

[0019] In one embodiment of the present application, the LED flash circuit further includes a third flash control circuit, which is connected between the first end of the capacitor energy storage circuit and the first end of the light-emitting device, and the third flash control circuit is used to control the capacitor energy storage circuit to output voltage to the light-emitting device.

[0020] In one embodiment of the present application, the number of the LED lamp groups is the same as the number of the third flash control circuits, and each of the third flash control circuits is correspondingly electrically connected to a group of the LED lamp groups; alternatively, multiple groups of the LED lamp groups share one third flash control circuit.

[0021] In one embodiment of the present application, the flash lamp further includes a charging circuit, which is respectively connected to the third flash control circuit and the capacitor energy storage circuit, and the charging circuit is used to charge the capacitor energy storage circuit with a set charging voltage according to the charging control instruction sent by the third flash control circuit.

[0022] In the technical solution provided by the embodiment of the present application, the flash lamp includes an LED flash circuit and a xenon flash circuit. Among them, the LED flash circuit includes a light-emitting device, and the light-emitting device includes a first light-emitting unit and a second light-emitting unit, and the first light-emitting unit and the second light-emitting unit have different light-emitting parameters, so that the light-emitting device can emit light with at least two different light-emitting parameters and their combinations. By storing a certain amount of electricity through the capacitor energy storage circuit, when a flash is needed, the stored electricity can be output to the light-emitting device at one time, so that the light-emitting device can emit a flash. Through the first flash control circuit, the flash energy of the light-emitting device can be correspondingly controlled. That is, the LED flash circuit can emit flashes with at least two different light-emitting parameters (such as different color temperatures or colors) and their combinations. And the xenon flash circuit has a flash illumination function similar to sunlight with a wide spectrum. By combining the LED flash circuit and the xenon flash circuit, the requirements for different flash effects in different shooting scenarios can be met, so as to fully meet more personalized creation needs. Description of the Drawings

[0023] Figure 1 is a schematic circuit diagram of the flash lamp provided in Embodiment 1 of the present application;

[0024] Figure 2 is a schematic diagram of the circuit principle of the flash lamp provided in Embodiment 2 of the present application;

[0025] Figure 3 is a circuit diagram of the flash lamp provided in Embodiment 2 of the present application;

[0026] Figure 4 is a schematic diagram of a high-level turn-on branch;

[0027] Figure 5 Schematic diagram of a branch that is turned on when the level is low;

[0028] Figure 6 It is the first circuit principle schematic diagram of the flash lamp provided in the third embodiment of the present application;

[0029] Figure 7 It is the first circuit principle schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0030] Figure 8 It is the first circuit schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0031] Figure 9 It is the second circuit schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0032] Figure 10 It is the third circuit schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0033] Figure 11 It is the second circuit principle schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0034] Figure 12 It is the second circuit principle schematic diagram of the flash lamp provided in the third embodiment of the present application;

[0035] Figure 13 It is the third circuit principle schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0036] Figure 14 It is the fourth circuit principle schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0037] Figure 15 It is the schematic diagram of the third flash control circuit;

[0038] Figure 16 It is the third circuit principle schematic diagram of the flash lamp provided in the third embodiment of the present application;

[0039] Figure 17 It is the fifth circuit principle schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0040] Figure 18 It is the sixth circuit principle schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0041] Figure 19 It is the seventh circuit principle schematic diagram of the LED flash lamp circuit provided in an embodiment of the present application;

[0042] Figure 20It is a schematic diagram of a charging circuit;

[0043] Figure 21 It is the eighth circuit principle schematic diagram of the LED flash circuit provided by an embodiment of the present application.

[0044] Description of the reference numerals in the drawings:

[0045] LED flash circuit 100; light-emitting device 110; capacitive energy storage circuit 120; first flash control circuit 130; PWM controller 131; protection circuit 132; constant-on control module 140; main control module 150; third flash control circuit 160; charging circuit 170; boost circuit 180;

[0046] Xenon flash circuit 200; xenon lamp tube 210; second flash control circuit 230;

[0047] Main control circuit 300. Detailed implementation manners

[0048] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0049] It should be noted that although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps described or depicted can be executed in a different order from the module division in the device or the flowchart. Terms such as "first" and "second" in the specification, claims and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0051] The flash provides illumination under low-light conditions. For optimal color rendering, the color of the flash should match the tone of the subject and / or the entire photographic scene. In the prior art, through circuit design, an LED lamp can be used as a photographic flash, but the emission band of the LED lamp cannot be adjusted, thus unable to meet the requirements of different flash effects in different shooting scenarios.

[0052] Based on this, an embodiment of the present application proposes a flash, including an LED flash circuit and a xenon flash circuit, which can meet the requirements of different flash effects in different shooting scenarios to fully meet more personalized creative needs.

[0053] Glossary of terms:

[0054] PWM: PWM (Pulse Width Modulation) is a method of digitally encoding an analog signal level. By using a high-resolution counter, the duty cycle of a square wave is modulated to encode the level of a specific analog signal. The PWM signal is still digital because at any given moment, the full-amplitude DC power supply is either fully on (ON) or fully off (OFF). The voltage or current source is applied to the analog load as a repeating pulse sequence of on (ON) or off (OFF). When it is on, the DC power supply is applied to the load, and when it is off, the power supply is disconnected.

[0055] The main characteristics of PWM pulses include:

[0056] Duty cycle: In a PWM cycle, the ratio of the time the pulse is at a high level (pulse width) to the entire cycle time is called the duty cycle. The size of the duty cycle determines the average voltage or current level of the PWM signal.

[0057] Frequency: The frequency of the PWM signal is the reciprocal of its period. It determines how fast the PWM signal changes.

[0058] Resolution: The resolution of PWM depends on the number of bits of the counter or register used to control the pulse width. The more bits, the higher the resolution and the higher the achievable analog accuracy.

[0059] LED: LED (Light Emitting Diode) is a solid-state semiconductor device that can convert electrical energy into visible light and can directly convert electricity into light.

[0060] To better understand the flashlights proposed in this application, the flashlights will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments. Obviously, the embodiments described in this application are some embodiments of this application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0061] Embodiment 1

[0062] Refer to Figure 1 , Figure 1 which is a schematic diagram of the circuit principle of the flashlight provided in Embodiment 1 of this application. As shown by Figure 1 , the flashlight includes an LED flashlight circuit 100 and a xenon flashlight circuit 200. The LED flashlight circuit 100 is electrically connected to the xenon flashlight circuit 200.

[0063] Among them, the LED flash circuit 100 includes a light-emitting device 110, a capacitive energy storage circuit 120, and a first flash control circuit 130. Among them, the light-emitting device 110 includes a first light-emitting unit and a second light-emitting unit, and the first light-emitting unit and the second light-emitting unit may have different light-emitting parameters under the same driving conditions. That is, the light-emitting device 110 can emit light with different light-emitting parameters under the same driving conditions, such as light of multiple different colors or multiple different color temperatures or a combination of different color temperatures and colors. The first end of the capacitive energy storage circuit 120 is electrically connected to the light-emitting device 110, the second end of the capacitive energy storage circuit 120 is grounded, and the first end of the capacitive energy storage circuit 120 is also used to access the power supply voltage VIN. The capacitive energy storage circuit 120 can store a certain amount of electricity, and when a flash is needed, the stored electricity can be output to the light-emitting device 110 together, so that the light-emitting device 110 can emit a corresponding flash. The first flash control circuit 130 is electrically connected to the light-emitting device 110 and can control the flash energy of the light-emitting device 110. That is, through the capacitive energy storage circuit 120 and the first flash control circuit 130, the light-emitting device 110 can emit flashes with different light-emitting parameters (such as different color temperatures or colors) and their combinations.

[0064] The xenon flash circuit 200 mainly uses a high-voltage current to activate xenon gas to form an arc of light to provide high color temperature and highly concentrated illumination. This technology breaks the traditional tungsten filament light-emitting principle and replaces the traditional filament by filling high-pressure inert gas (i.e., xenon gas) in a quartz lamp tube. When the xenon gas is stimulated by a high-voltage current of up to 23,000 volts through a ballast, a perfect white arc is formed between the two electrodes, and the emitted light is close to very perfect sunlight. This technology not only improves the color temperature but also greatly reduces the energy consumption.

[0065] The triggering method of the xenon flash circuit 200 is to use a high-voltage capacitor to store enough energy and then release the energy to the lamp tube, and this energy will excite the xenon gas in the lamp tube to generate light. The light-emitting principle of the xenon flash is to use positive and negative electric stimulation to make argon gas and rare metals chemically react to emit light. Therefore, there is a small glass ball in the lamp tube filled with argon gas and a little rare metal. As long as an electric current is used to stimulate them to carry out a chemical reaction, the two will emit light with a color temperature of up to 4000K - 12000K. The xenon flash circuit 200 has a flash illumination function with a wide spectrum similar to sunlight.

[0066] An embodiment of the present application provides a flash lamp, including an LED flash circuit and a xenon flash circuit. By combining the LED flash circuit and the xenon flash circuit, the requirements for different flash effects in different shooting scenarios can be met, so as to fully meet more personalized creation needs.

[0067] It should be noted that the first light-emitting unit and the second light-emitting unit can be lamp beads. In this case, the light-emitting device can include a first lamp bead and a second lamp bead, and the first lamp bead and the second lamp bead can have different light-emitting parameters under the same driving conditions. The first light-emitting unit and the second light-emitting unit can also be light-emitting chips. In this case, the light-emitting device can include a first light-emitting chip and a second light-emitting chip. For example, the light-emitting device can be a lamp bead that includes a first light-emitting chip and a second light-emitting chip. The first light-emitting chip and the second light-emitting chip can have different light-emitting parameters under the same driving conditions. For example, the first light-emitting chip and the second light-emitting chip can emit light of different colors or different color temperatures respectively.

[0068] In the embodiments of the present application, the light-emitting device 110 can include a multi-color temperature lamp group, such as a two-color temperature lamp group, such as a cold white light and a warm white light lamp. The light-emitting device 110 can also be a multi-color lamp group, such as an RGB three-color, an RGBY four-color, a five-color, a six-color and more color lamp groups. The light-emitting device 110 can also be a lamp group combining color temperature and color. The light-emitting device 110 can also be white light with different band intervals and peaks. The light-emitting device 110 can also be various combinations of different band visible lights or combinations of different color temperatures, etc.

[0069] Embodiment 2

[0070] Referring to Figure 2 , Figure 2 is a schematic diagram of the circuit principle of the flash lamp provided in Embodiment 2 of the present application. As shown by Figure 2 , the flash lamp includes an LED flash lamp circuit 100 and a xenon flash lamp circuit 200. The LED flash lamp circuit 100 is electrically connected to the xenon flash lamp circuit 200. Among them, the LED flash lamp circuit 100 includes a light-emitting device 110, a capacitor energy storage circuit 120, and a first flash control circuit 130. The xenon flash lamp circuit 200 includes a xenon lamp tube 210, a capacitor energy storage circuit 120, and a second flash control circuit 230. The LED flash lamp circuit 100 and the xenon flash lamp circuit 200 share the capacitor energy storage circuit 120, which can save circuit components and the layout space of circuit components, and can save costs. Specifically, the first end of the capacitor energy storage circuit 120 is electrically connected to the xenon lamp tube 210, and the second flash control circuit 230 is electrically connected to the xenon lamp tube 210. The second flash control circuit 230 is used to control the flash energy of the xenon lamp tube.

[0071] It should be noted that the LED flash lamp circuit 100 in the embodiments of the present application has the same circuit structure as the LED flash lamp circuit 100 in Embodiment 1 above, and will not be described in detail here.

[0072] It should be noted that the LED flash circuit 100 and the xenon flash circuit 200 can share a capacitor energy storage circuit 120, or they can not share it. That is, the LED flash circuit 100 and the xenon flash circuit 200 can each include a corresponding capacitor energy storage circuit respectively.

[0073] Referring to Figure 3 , Figure 3 is the circuit schematic diagram of the flash lamp provided in the second embodiment of the present application. As Figure 3 shown, the capacitor energy storage circuit 120 is used for storing electrical energy. The capacitor energy storage circuit 120 includes an energy storage capacitor C1. The energy storage capacitor C1 can be an energy storage capacitor with an adjustable energy storage capacity. By adjusting the energy storage capacity of the energy storage capacitor, the flash energy of the light emitting device 110 in the LED flash circuit 100 and the flash energy of the xenon lamp tube 210 in the xenon flash circuit 200 can be adjusted. The energy storage capacitor C1 can also be an energy storage capacitor with an adjustable working voltage. By adjusting the working voltage applied to the energy storage capacitor C1, the flash energy of the light emitting device 110 and the xenon lamp tube 210 can be adjusted.

[0074] Referring to Figure 3 , the first flash control circuit 130 includes an NMOS switch tube Q1, a freewheeling diode D1 and a choke inductor L1. Among them, the gate of the NMOS switch tube Q1 is electrically connected to the PWM control signal, and the source of the NMOS switch tube Q1 is grounded. The input end of the freewheeling diode D1 is electrically connected to the drain of the NMOS switch tube Q1, and the output end of the freewheeling diode D1 is electrically connected to the first end of the light emitting device 110. One end of the choke inductor L1 is electrically connected to the second end of the light emitting device 110, and the other end of the choke inductor L1 is electrically connected to the input end of the freewheeling diode D1 and the drain of the NMOS switch tube Q1. The freewheeling diode D1 and the choke inductor L1 form a freewheeling circuit, which provides a continuous working current for the light emitting device 110 when the NMOS switch tube Q1 is turned off, and can improve the stability and service life of the light emitting device 110. The capacitor C4 is a capacitor for filtering and voltage regulation.

[0075] In the embodiment of the present application, the first function of the choke inductor L1 is to limit the passing current of the LED lamp group to ensure that the LED lamp group will not be burned out due to overcurrent. The second function is to stabilize the current of the light emitting device 110 and emit stable light when a single working PWM pulse group is applied. The NMOS switch tube Q1, as a switching element, is used to control the on-time and off-time of the conduction between the light emitting device 110 and the high-level conduction branch to GND (i.e., ground), so as to adjust the current value of the light emitting device 110 and the high-level conduction branch. When the NMOS switch tube Q1 is turned off, the current of the choke inductor L1 cannot change suddenly, and a discharge loop is formed by freewheeling through the freewheeling diode D1 to the light emitting device 110.

[0076] It should be noted that, Figure 3In the shown circuit diagram, a high-level turn-on branch and a low-level turn-off branch are formed. Among them, the high-level turn-on branch refers to the path through which the current flows when the PWM control signal is at a high level and the NMOS switch Q1 is turned on. The low-level turn-off branch refers to the discharge loop through which the current flows when the PWM control signal is at a low level and the NMOS switch Q1 is turned off.

[0077] As Figure 4 shown, Figure 4 it is a schematic diagram of the high-level turn-on branch. In the high-level turn-on branch, the current sequentially passes through the NMOS switch Q1, the freewheeling diode D1, the light-emitting device 110, and the choke inductor L1.

[0078] As Figure 5 shown, Figure 5 it is a schematic diagram of the low-level turn-on branch. In the low-level turn-off branch, the current sequentially passes through the choke inductor L1, the capacitor C4, and the light-emitting device 110.

[0079] Referring to Figure 3 , the first flash control circuit 130 further includes a PWM controller, the PWM controller is electrically connected to the gate of the NMOS switch Q1, and the PWM controller is used to adjust and output a PWM control signal. The first flash control circuit 130 further includes a protection circuit, and the protection circuit is connected between the PWM controller and the gate of the NMOS switch Q1. The protection circuit includes a first resistor R1 and a first diode D2, the first resistor R1 and the first diode D2 are connected in parallel, and the input end of the first diode D2 is connected to the gate of the NMOS switch Q1, and the output end of the first diode D2 is connected to the PWM controller.

[0080] In the embodiments of the present application, by adjusting the PWM control signal, the overall current in the LED flash circuit 100 can be adjusted, and further the flash energy of the light-emitting device 110 can be adjusted, so as to meet the actual use requirements of different photographing and filming. For example, when the duty cycle of the PWM is increased, the current rising ratio of the choke inductor L1 increases, and the overall current is relatively large, achieving the effect of increasing the current, which is manifested as an increase in flash energy; while when the duty cycle of the PWM is decreased, the current falling ratio of the choke inductor L1 increases, and the overall current is relatively small, achieving the effect of decreasing the current, which is manifested as a decrease in flash energy.

[0081] Specifically, by outputting PWM-H and PWM-L of the PWM pulse wave at a specific period, limiting the pulse wave length, and adjusting the time length ratio of PWM-H and PWM-L in the period to adjust the entire average current value of the light-emitting device 110, specifically:

[0082] When the duty cycle is adjusted to a larger value, the PWM-H time ratio relative to the PWM-L time ratio increases, the current rise ratio of the choke inductor L1 increases, and the overall current is relatively large, achieving the effect of increasing the current, which is manifested as an increase in the flash energy; when the duty cycle is adjusted to a smaller value, the PWM-H time ratio relative to the PWM-L time ratio decreases, the current drop ratio of the choke inductor L1 increases, and the overall current is relatively small, achieving the effect of reducing the current, which is manifested as a decrease in the flash energy.

[0083] Reference Figure 3 Similarly, the xenon flash circuit 200 includes a xenon lamp tube 210, a capacitor energy storage circuit 120 and a second flash control circuit 230. The second flash control circuit 230 may include a transistor Q2, a freewheeling diode D4 and a choke inductor L2. The base of the transistor Q2 is electrically connected to the PWM control signal, and the emitter of the transistor Q2 is grounded. The output end of the freewheeling diode D4 is electrically connected to the collector of the transistor Q2, the input end of the freewheeling diode D4 is electrically connected to the first end of the xenon lamp tube LD1, the input end of the freewheeling diode D4 is also connected to the second end of the choke inductor L2, and the second end of the xenon lamp tube LD1 is electrically connected to the collector of the transistor Q2. The first end of the choke inductor L2 is electrically connected to the first end of the xenon lamp tube LD1, and the first end of the choke inductor L1 is also electrically connected to the output end of the freewheeling diode D4 and the collector of the transistor Q2. The freewheeling diode D4 and the choke inductor L2 can form a freewheeling circuit to provide a continuous working current to the xenon lamp LD1 when the transistor Q2 is turned off.

[0084] The second flash control circuit 230 also includes a PWM controller, which is electrically connected to the base of the transistor Q2, and is used to adjust and output a PWM control signal. The second flash control circuit 230 also includes a protection circuit, which is connected between the PWM controller and the base of the transistor Q2. The protection circuit includes a second resistor R2 and a second diode D6, the second resistor R2 and the second diode D6 are connected in parallel, and the input end of the second diode D6 is connected to the base of the transistor Q2, and the output end of the second diode D6 is connected to the PWM controller.

[0085] The second flash control circuit 230 also includes a third diode D3 and a fourth diode D5. The input end of the third diode D3 is electrically connected to the collector of the transistor Q2, the output end of the third diode D3 is electrically connected to the output end of the freewheeling diode D4, and the output end of the third diode D3 is also electrically connected to the first end of the choke inductor L2. The input end of the fourth diode D5 is connected to the first end of the xenon lamp LD1, and the output end of the fourth diode D5 is electrically connected to the collector of the transistor Q2.

[0086] In the embodiments of the present application, by adjusting the PWM control signal through a PWM controller, the overall current in the xenon flash circuit 200 can be adjusted, and thus the flash energy of the xenon lamp LD1 can be adjusted. For example, when the duty cycle of the PWM is increased, the current rising ratio of the choke inductor L2 increases, and the overall current is relatively large, achieving the effect of increasing the current, which is manifested as an increase in flash energy; when the duty cycle of the PWM is decreased, the current falling ratio of the choke inductor L2 increases, and the overall current is relatively small, achieving the effect of decreasing the current, which is manifested as a decrease in flash energy.

[0087] In the embodiments of the present application, through the first flash control circuit 130, the flash energy of the light-emitting device 110 can be correspondingly controlled. And since the first light-emitting unit and the second light-emitting unit included in the light-emitting device 110 have different light-emitting parameters, that is, the light-emitting device 110 can emit lights with different light-emitting parameters, such as lights of multiple different colors or multiple different color temperatures or combinations of different color temperatures and colors. Through the control of the first flash control circuit 130, the light-emitting device 110 can emit flashes of different colors or multiple different color temperatures or combinations of different color temperatures and colors. And through the second flash control circuit 230, the flash energy of the xenon lamp 210 can be correspondingly controlled to control the emission of a flash of broad-spectrum sunlight-like light. By controlling the LED flash circuit through the first flash control circuit 130 and controlling the xenon flash circuit through the second flash control circuit 230, different colors or different color temperatures or combinations of different color temperatures and colors of flashes or flashes of broad-spectrum sunlight-like light or a mixed flash of the two can be controlled according to the needs of the shooting scene, that is, the requirements for different flash effects in different shooting scenes can be met.

[0088] Embodiment III

[0089] Refer to Figure 6 , Figure 6 which is the first circuit principle schematic diagram of the flash provided by Embodiment III of the present application. As shown by Figure 6 , the flash includes an LED flash circuit 100, a xenon flash circuit 200, and a main control circuit 300. Among them, the LED flash circuit 100 includes a light-emitting device 110, a capacitor energy storage circuit 120, and a first flash control circuit 130. The xenon flash circuit 200 includes a xenon lamp 210, a capacitor energy storage circuit 120, and a second flash control circuit 230. The LED flash circuit 100 and the xenon flash circuit 200 share the capacitor energy storage circuit 120. Both the first flash control circuit 130 and the second flash control circuit 230 are electrically connected to the main control circuit 300.

[0090] In some embodiments, the flash may be a top-mounted flash. The flash further includes a hot shoe interface, which is connected to the main control circuit 300 and is used to transmit the flash trigger signal of an external device to the LED flash circuit 100 and the xenon flash circuit 200 via the hot shoe interface and the main control circuit 300, so that the light-emitting device 110 and the xenon lamp tube 210 can flash simultaneously. By providing the LED flash circuit 100 and the xenon flash circuit 200 in the top-mounted flash, the coexistence of a wide-spectrum high-energy flash (i.e., the xenon flash circuit 200) and two or more relatively narrow-spectrum high-energy flashes (i.e., the LED flash circuit 100) is enabled. This not only allows for the realization of high-energy flashes of multiple color temperatures or colors using the LED flash circuit 100, that is, for low-brightness shooting scenarios, flashes of multiple color temperatures or colors can be achieved, but also retains the flash illumination function of the xenon flash with a wide spectrum similar to sunlight. Additionally, by mixing the high-power LED flash with the xenon flash, effective color temperature and color adjustment of the relatively hard xenon flash can be performed, fully meeting more personalized creative requirements.

[0091] In the embodiments of the present application, the first flash control circuit 130 and the second flash control circuit 230 are both electrically connected to the main control circuit 300, so that the main control circuit 300 can control the first flash control circuit 130 and the second flash control circuit 230 to respectively control the LED flash lamp circuit 100 and the xenon flash lamp circuit 200. Exemplarily, if a flash of broad-spectrum sunlight-like light is required according to the shooting scene, the main control circuit 300 sends a first control signal to the second flash control circuit 230, so that the second flash control circuit 230 controls the xenon lamp tube 210 to emit a flash of broad-spectrum sunlight-like light according to the first control signal. The main control circuit 300 also sends a second control signal to the first flash control circuit 130, so that the first flash control circuit 130 controls the light-emitting device 110 not to emit light according to the second control signal. If a flash of different colors or different color temperatures or a combination of different color temperatures and colors is required according to the shooting scene, the main control circuit 300 sends a first control signal to the first flash control circuit 130, so that the first flash control circuit 130 controls the light-emitting device 110 to emit a flash of different colors or different color temperatures or a combination of different color temperatures and colors according to the first control signal. The main control circuit 300 also sends a second control signal to the second flash control circuit 230, so that the second flash control circuit 230 controls the xenon lamp tube 210 not to emit light according to the second control signal. If a flash of broad-spectrum sunlight-like light and a flash of different colors or different color temperatures or a combination of different color temperatures and colors are required to be emitted simultaneously according to the shooting scene, the main control circuit 300 sends control signals to the first flash control circuit 130 and the second flash control circuit 230 respectively, so that the first flash control circuit 130 controls the light-emitting device 110 to emit a flash of different colors or different color temperatures or a combination of different color temperatures and colors according to the corresponding control signal, and the second flash control circuit 230 controls the xenon lamp tube 210 to emit a flash of broad-spectrum sunlight-like light according to the corresponding control signal, thereby a mixed flash of LED flash and xenon flash can be emitted, and the color temperature and color of the relatively hard xenon flash can be effectively adjusted.

[0092] In the embodiments of the present application, the main control circuit 300 controls the first flash control circuit 130 and the second flash control circuit 230, so that the flash lamp can be controlled to emit a corresponding flash that meets the requirements according to different shooting scenes and shooting requirements, that is, the requirements for different flash effects in different shooting scenes can be met, so as to fully meet more personalized creative requirements.

[0093] In some embodiments, referring to Figure 7 , Figure 7 is the first circuit principle schematic diagram of the LED flash lamp circuit provided by an embodiment of the present application. From Figure 7As shown in the figure, the LED flash lamp includes a light-emitting device 110, a capacitor energy storage circuit 120, and a first flash control circuit 130. The first light-emitting unit and the second light-emitting unit included in the light-emitting device 110 have different light-emitting parameters, that is, the light-emitting device 110 can emit light with different light-emitting parameters, such as light of multiple different colors or multiple different color temperatures or a combination of different color temperatures and colors. The LED flash lamp further includes a constant-on control module 140 and a main control module 150. Among them, the constant-on control module 140 is connected to the light-emitting device 110 and is used to drive the light-emitting device 110 with a rated voltage. The main control module 150 is respectively connected to the first flash control circuit 130 and the constant-on control module 140, and is used to selectively send control instructions to the first flash control circuit 130 or the constant-on control module 140. In the embodiment of the present application, the light-emitting device 110 has at least two different light-emitting parameters, that is, the light-emitting device 110 can emit light of multiple different colors or multiple different color temperatures or a combination of different color temperatures and colors. The light-emitting device 110 may include one or more groups of LED lamp groups, and at least one group of the one or more groups of LED lamp groups can be selected as the controllable constant-on LED fill light. The LED flash lamp has two working modes, namely a constant-on illumination mode (or a constant-on fill light mode) and a flash mode, and the main control module 150 selectively drives the constant-on control module 140 or the first flash control circuit 130. When the constant-on illumination mode is selected, the main control module 150 drives the constant-on control module 140 to make the light-emitting device 110 emit constant light with a rated voltage, which is suitable for illumination during daily shooting and video recording. When the user selects the flash mode, the main control module 150 drives the first flash control module 130 to make the light-emitting device 110 flash, and it can be used as a photographic flash lamp. Since the LED flash lamp has two different working modes, that is, one lamp has both the functions of flashing and constant-on illumination at the same time, when the user takes pictures, there is no need to prepare two different-function lamps at the same time, which greatly reduces the economic burden on photographic users and is conducive to the promotion of the product in the market.

[0094] In some embodiments, the light-emitting device 110 may include one or more groups of LED lamp groups, and each group of LED lamp groups includes one lamp bead or multiple lamp beads connected in series in sequence, and the groups of LED lamp groups are connected in parallel.

[0095] Specifically, referring to Figure 8 , Figure 8 is the first circuit schematic diagram of the LED flash lamp circuit provided by an embodiment of the present application. From Figure 8As shown, the number of LED lamp groups is 1 group, that is, the LED flash circuit 100 includes one group of LED lamp groups, and this group of LED lamp groups includes a lamp bead LED1. This lamp bead LED1 can be a multi-color lamp bead or a multi-color temperature lamp bead or a lamp bead with a combination of multi-color temperature and multi-color. The lamp bead LED1 can include multi-color LED chips, so that the lamp bead LED1 can emit light of different colors or multiple different color temperatures or different combinations of color temperature and color.

[0096] In some embodiments, referring to Figure 9 , Figure 9 is the second circuit schematic diagram of the LED flash circuit provided by an embodiment of the present application. As Figure 9 shown, the number of LED lamp groups is 1 group, that is, the LED flash circuit 100 includes one group of LED lamp groups, and this group of LED lamp groups includes a plurality of lamp beads connected in series in sequence, namely LED1, LED2,..., LEDn. Since this group of LED lamp groups includes a plurality of lamp beads, each lamp bead can be a single-color temperature and single-color lamp bead or a multi-color lamp bead or a multi-color temperature lamp bead or a lamp bead with a combination of multi-color temperature and multi-color. For example, the lamp beads LED1, LED2,..., LEDn can all be single-color temperature and single-color lamp beads, but the color temperature and color of each lamp bead can be different, so that this LED lamp group can emit light of different colors or multiple different color temperatures or different combinations of color temperature and color.

[0097] In some embodiments, referring to Figure 10 , Figure 10 is the third circuit schematic diagram of the LED flash circuit provided by an embodiment of the present application. As Figure 10 shown, the number of LED lamp groups is multiple groups, that is, the LED flash circuit 100 includes multiple groups of LED lamp groups. Each group of LED lamp groups includes a plurality of lamp beads connected in series in sequence, and the groups of LED lamp groups are connected in parallel. At this time, since the lamp beads included in each group of LED lamp groups include single-color temperature and single-color lamp beads or multi-color lamp beads or multi-color temperature lamp beads or lamp beads with a combination of multi-color temperature and multi-color, multiple groups of LED lamp groups can emit light of different colors or multiple different color temperatures or different combinations of color temperature and color.

[0098] In some embodiments, in the LED flash circuit 100, the light-emitting device 110 can include one group or multiple groups of LED lamp groups. The multiple groups of LED lamp groups can be controlled by the first flash control circuit 130, or each group of LED lamp groups can be controlled by a first flash control circuit 130 respectively. That is, the number of LED lamp groups is set to be the same as the number of the first flash control circuits 130, so that each first flash control circuit 130 is correspondingly electrically connected to one group of LED lamp groups.

[0099] In some embodiments, referring to Figure 11 , Figure 11This is the second circuit principle diagram of the LED flash circuit provided by an embodiment of the present application. From Figure 11 As shown, the LED flash circuit 100 includes multiple groups of LED lamp groups, namely LED lamp group 1, LED lamp group 2, LED lamp group 3,..., LED lamp group n, and the multiple groups of LED lamp groups are connected in parallel. The flash includes multiple first flash control circuits, namely first flash control circuit 1, first flash control circuit 2, first flash control circuit 3,..., first flash control circuit n. Among them, each group of LED lamp groups is correspondingly connected to a first flash control circuit, that is, each group of LED lamp groups is correspondingly controlled by a first flash control circuit 130. Among them, the multiple LED lamp groups can share a capacitor energy storage circuit 120, that is, a shared capacitor energy storage circuit 120 provides the light-emitting energy for the multiple LED lamp groups respectively.

[0100] In the embodiment of the present application, when the LED flash circuit 100 includes multiple groups of LED lamp groups, multiple groups of first flash control circuits 130, and a shared capacitor energy storage circuit 120, the LED flash circuit 100 and the xenon flash circuit 200 can share a capacitor energy storage circuit 120, that is, the shared capacitor energy storage circuit 120 can also provide the light-emitting energy for the xenon lamp tube 210.

[0101] Correspondingly, referring to Figure 12 , Figure 12 This is the second circuit principle diagram of the flash provided by the third embodiment of the present application. From Figure 12 As shown, the main control circuit 300 is electrically connected to the second flash control circuit 230 to control the light emission of the xenon lamp tube 210. The main control circuit 300 is also electrically connected to each first flash control circuit 130 to control the light emission of each group of LED lamp groups.

[0102] In some embodiments, in the LED flash circuit 100, the light-emitting device 110 may include one or more groups of LED lamp groups. Referring to Figure 13 , Figure 13 This is the third circuit principle diagram of the LED flash circuit provided by an embodiment of the present application. From Figure 13As shown, the LED flash circuit 100 includes multiple groups of LED lamp groups, namely LED lamp group 1, LED lamp group 2, LED lamp group 3, ……, LED lamp group n. The multiple groups of LED lamp groups are connected in parallel. The flash includes multiple first flash control circuits, namely first flash control circuit 1, first flash control circuit 2, first flash control circuit 3, ……, first flash control circuit n. Among them, each group of LED lamp groups is correspondingly connected to a first flash control circuit, that is, each group of LED lamp groups is correspondingly controlled by a first flash control circuit. The flash includes multiple capacitor energy storage circuits, namely capacitor energy storage circuit 1, capacitor energy storage circuit 2, capacitor energy storage circuit 3, ……, capacitor energy storage circuit n. Each group of LED lamp groups is correspondingly connected to a capacitor energy storage circuit 120, that is, each group of LED lamp groups is correspondingly provided with luminous energy by a capacitor energy storage circuit 120.

[0103] In the embodiment of the present application, each group of LED lamp groups is correspondingly controlled by a first flash control circuit 130. Since multiple groups of LED lamp groups can emit lights of multiple different colors or multiple different color temperatures or different combinations of color temperatures and colors, different color and color temperature effects can be obtained, and there is no need to replace color filters and lenses, which is convenient to operate.

[0104] In some embodiments, refer to Figure 14 , Figure 14 is the fourth circuit principle schematic diagram of the LED flash circuit provided by an embodiment of the present application. As Figure 14 shown, the LED flash circuit 100 includes a light-emitting device 110, a capacitor energy storage circuit 120, and a first flash control circuit 130. The first light-emitting unit and the second light-emitting unit included in the light-emitting device 110 have different light-emitting parameters, that is, the light-emitting device 110 can emit lights with different light-emitting parameters, such as lights of multiple different colors or multiple different color temperatures or different combinations of color temperatures and colors. The LED flash circuit 100 further includes a third flash control circuit 160. The third flash control circuit 160 is connected between the first end of the capacitor energy storage circuit 120 and the first end of the light-emitting device 110, and is used to control the capacitor energy storage circuit 120 to output voltage to the LED lamp group 110. When high-power flashing is required, the third flash control circuit 160 drives the capacitor energy storage circuit 120 to deliver all the electricity stored therein to the light-emitting device 110 in a very short time, so that the lamp beads in the light-emitting device 110 can reach more than four times their normal working brightness instantly, so as to achieve the flashing effect of the existing xenon flash. At the same time, the flash energy of the light-emitting device 110 can be further controlled through the first flash control circuit 130, that is, while controlling the light-emitting device 110 to emit a flash, the flash energy emitted by the light-emitting device 110 can also be controlled. Among them, the circuit diagram of the third flash control circuit 160 refers to Figure 15 , Figure 15It is a schematic diagram of the third flash control circuit.

[0105] Correspondingly, referring to Figure 16 , Figure 16 is the schematic diagram of the third circuit principle of the flash lamp provided in the third embodiment of the present application. As shown by Figure 16 , the main control circuit 300 is electrically connected to the second flash control circuit 230 to control the light emission of the xenon lamp tube 210. The main control circuit 300 is also electrically connected to the first flash control circuit 130 and the third flash control circuit 160 to control the light emission of the light emitting device 110.

[0106] In some embodiments, the light emitting device 110 may include one or more groups of LED lamp groups, and each group of LED lamp groups may be respectively controlled by a third flash control circuit 160. That is, the number of LED lamp groups is set to be the same as the number of the third flash control circuits 160, so that each third flash control circuit 160 is correspondingly electrically connected to a group of LED lamp groups. Referring to Figure 17 , Figure 17 is the schematic diagram of the fifth circuit principle of the LED flash lamp circuit provided in an embodiment of the present application. As shown by Figure 17 , the LED flash lamp circuit 100 includes multiple groups of LED lamp groups, namely LED lamp group 1, LED lamp group 2, LED lamp group 3, ……, LED lamp group n, and the multiple groups of LED lamp groups are connected in parallel. The LED flash lamp circuit 100 also includes multiple first flash control circuits 130, namely first flash control circuit 1, first flash control circuit 2, first flash control circuit 3, ……, first flash control circuit n. Among them, each group of LED lamp groups is correspondingly connected to a first flash control circuit 130, that is, each group of LED lamp groups is correspondingly controlled by a first flash control circuit 130. The LED flash lamp circuit 100 also includes multiple third flash control circuits 160, namely third flash control circuit 1, third flash control circuit 2, third flash control circuit 3, ……, third flash control circuit n. Among them, each group of LED lamp groups is correspondingly connected to a third flash control circuit 160, that is, each group of LED lamp groups can also be correspondingly controlled by a third flash control circuit 160. Among them, the multiple LED lamp groups can share a capacitor energy storage circuit 120, that is, each group of LED lamp groups is driven by a corresponding third flash control circuit 160, and the shared capacitor energy storage circuit 120 provides light emission energy for each of them respectively.

[0107] It should be noted that one or more groups of LED lamp groups can also share a third flash control circuit 160, that is, each LED lamp group is controlled by the shared third flash control circuit 160. The multiple LED lamp groups can also share a capacitor energy storage circuit 120, that is, each group of LED lamp groups is driven by the shared third flash control circuit 160, and the shared capacitor energy storage circuit 120 provides light emission energy for each of them respectively.

[0108] In some embodiments, referring to Figure 18 , Figure 18 is the sixth circuit principle schematic diagram of the LED flash circuit provided by an embodiment of the present application. As shown by Figure 18 , the LED flash circuit 100 includes multiple groups of LED lamp groups, namely LED lamp group 1, LED lamp group 2, LED lamp group 3,..., LED lamp group n, and the multiple groups of LED lamp groups are connected in parallel. The flash includes multiple first flash control circuits 130, namely first flash control circuit 1, first flash control circuit 2, first flash control circuit 3,..., first flash control circuit n. Among them, each group of LED lamp groups is correspondingly connected to a first flash control circuit 130, that is, each group of LED lamp groups is correspondingly controlled by a first flash control circuit 130. The LED flash circuit 100 includes multiple third flash control circuits 160, namely third flash control circuit 1, third flash control circuit 2, third flash control circuit 3,..., third flash control circuit n. Among them, each group of LED lamp groups is correspondingly connected to a third flash control circuit 160, that is, each group of LED lamp groups can also be correspondingly controlled by a third flash control circuit 160. The LED flash circuit 100 includes multiple capacitor energy storage circuits 120, namely capacitor energy storage circuit 1, capacitor energy storage circuit 2, capacitor energy storage circuit 3,..., capacitor energy storage circuit n, and each group of LED lamp groups is correspondingly connected to a capacitor energy storage circuit 120, that is, each group of LED lamp groups is driven by the corresponding third flash control circuit 160 to drive the corresponding capacitor energy storage circuit 120 to provide luminous energy for it.

[0109] In the embodiments of the present application, each group of LED lamp groups is jointly controlled by the corresponding first flash control circuit 130 and the corresponding third flash control circuit 160, and can control the LED lamp group to emit flashes of different colors or multiple different color temperatures or different combinations of color temperature and color, so as to meet the requirements of different flash effects in different shooting scenarios.

[0110] In some embodiments, referring to Figure 19 , Figure 19 is the seventh circuit principle schematic diagram of the LED flash circuit provided by an embodiment of the present application. As shown by Figure 19As shown, the LED flash circuit 100 includes a light-emitting device 110, a capacitive energy storage circuit 120, and a first flash control circuit 130. The light-emitting device 110 has at least two different light-emitting parameters, that is, the light-emitting device 110 can emit light of multiple different colors, multiple different color temperatures, or different combinations of color temperature and color. The flash lamp further includes a third flash control circuit 160, which is connected between the first end of the capacitive energy storage circuit 120 and the first end of the light-emitting device 110, and is used to control the capacitive energy storage circuit 120 to output voltage to the LED lamp group 110. The flash lamp further includes a charging circuit 170, which is respectively connected to the third flash control circuit 160 and the capacitive energy storage circuit 120. The charging circuit 170 is used to charge the capacitive energy storage circuit 120 with a set charging voltage according to the charging control instruction sent by the third flash control circuit 160. Among them, the circuit diagram of the charging circuit 170 refers to Figure 20 , Figure 20 is a schematic diagram of the charging circuit. The third flash control circuit 160 sends a charging control instruction to the charging circuit 170, and the charging circuit 170 charges the capacitive energy storage circuit 120. Among them, the charging voltage of the capacitive energy storage circuit 120 is determined by the charging control instruction of the third flash control circuit 160. When a high-power flash needs to be generated, the third flash control circuit 160 drives the capacitive energy storage circuit 120 to deliver all the electricity stored therein to the light-emitting device 110 in a very short time, so that the lamp beads in the light-emitting device 110 can reach more than four times their normal working brightness instantly, so as to achieve the flash effect of the existing xenon flash lamp. At the same time, the flash energy of the light-emitting device 110 can be further controlled through the first flash control circuit 130, that is, while controlling the light-emitting device 110 to emit a flash, the light-emitting device 110 can also be controlled to emit flashes of different colors, multiple different color temperatures, or different combinations of color temperature and color.

[0111] In some embodiments, refer to Figure 21 , Figure 21 is the eighth circuit principle schematic diagram of the LED flash circuit provided by an embodiment of the present application. From Figure 21As shown in the figure, the LED flash circuit 100 includes a light-emitting device 110, a capacitive energy storage circuit 120, and a first flash control circuit 130. The light-emitting device 110 has at least two different light-emitting parameters, that is, the light-emitting device 110 can emit light of multiple different colors, multiple different color temperatures, or different combinations of color temperatures and colors. The flash lamp further includes a third flash control circuit 160, which is connected between the first end of the capacitive energy storage circuit 120 and the first end of the light-emitting device 110, and is used to control the capacitive energy storage circuit 120 to output voltage to the LED lamp group 110. The flash lamp further includes a charging circuit 170, which is respectively connected to the third flash control circuit 160 and the capacitive energy storage circuit 120. The charging circuit 170 is used to charge the capacitive energy storage circuit 120 with a set charging voltage according to the charging control instruction sent by the third flash control circuit 160. The flash lamp further includes a boost circuit 180. One end of the boost circuit 180 is used to connect to the power supply voltage, and the other end of the boost circuit 180 is connected to the charging circuit 170. The boost circuit 180 is used to boost the power supply voltage and then input it to the charging circuit 170. Among them, the boost circuit 180 uses electronic components such as a bootstrap boost diode and a bootstrap boost capacitor to superimpose the capacitor discharge voltage and the power supply voltage, so as to increase the voltage. In some circuits, the increased voltage can reach several times the power supply voltage. That is, through the boost circuit 180, a higher voltage can be provided for the charging circuit 170, so that the charging circuit 170 can provide a higher voltage for the capacitive energy storage circuit 120, enabling the capacitive energy storage circuit 120 to quickly store more electrical energy. The third flash control circuit 160 sends a charging control instruction to the charging circuit 170, and the charging circuit 170 charges the capacitive energy storage circuit 120; among them, the charging voltage of the capacitive energy storage circuit 120 is determined by the charging control instruction of the third flash control circuit 160. When a high-power flash needs to be generated, the third flash control circuit 160 drives the capacitive energy storage circuit 120 to deliver all the stored electrical energy to the light-emitting device 110 in a very short time, so that the lamp beads in the light-emitting device 110 can reach more than four times their normal working brightness instantaneously, so as to achieve the flash effect of the existing xenon flash lamp. At the same time, through the first flash control circuit 130, the flash energy of the light-emitting device 110 can be further controlled, that is, while controlling the light-emitting device 110 to emit a flash, the light-emitting device 110 can also be controlled to emit a flash of different colors, multiple different color temperatures, or different combinations of color temperatures and colors.

[0112] The embodiments described in the embodiments of the present application are for more clearly explaining the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0113] Those skilled in the art can understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than those shown in the figures, or combine certain steps, or different steps.

[0114] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0115] Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, and their appropriate combinations.

[0116] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0117] The preferred embodiments of the present application have been described above with reference to the drawings, but this does not limit the scope of the rights of the embodiments of the present application. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of the present application shall be within the scope of the rights of the embodiments of the present application.

Claims

1. A flashlight, characterized in that: The invention comprises an LED flash lamp circuit and a xenon flash lamp circuit, wherein the LED flash lamp circuit and the xenon flash lamp circuit are electrically connected, wherein the LED flash lamp circuit comprises: A light emitting device, comprising a first light emitting unit and a second light emitting unit, wherein the first light emitting unit and the second light emitting unit have different light emitting parameters; A capacitor energy storage circuit, wherein a first end of the capacitor energy storage circuit is electrically connected to the light emitting device, a second end of the capacitor energy storage circuit is grounded, and the first end of the capacitor energy storage circuit is also used to access a power supply voltage; The first flash control circuit is electrically connected to the light emitting device and is used to control the flash energy of the light emitting device.

2. The flash lamp according to claim 1, characterized in that The xenon flash lamp circuit includes a xenon lamp tube, the capacitor energy storage circuit and a second flash control circuit; the first end of the capacitor energy storage circuit is also electrically connected to the xenon lamp tube, the second flash control circuit is electrically connected to the xenon lamp tube, and the second flash control circuit is used to control the flash energy of the xenon lamp tube.

3. The flash lamp according to claim 2, characterized in that The flash lamp further includes a main control circuit, and the first flash control circuit and the second flash control circuit are both electrically connected to the main control circuit.

4. The flash lamp according to claim 3, characterized in that The flash is a set-top flash, and the flash also includes a hot shoe interface, which is connected to the main control circuit and is used to transmit a flash trigger signal of an external device to the LED flash circuit and the xenon flash circuit via the hot shoe interface and the main control circuit, so that the light-emitting device and the xenon lamp tube flash simultaneously.

5. The flash lamp according to claim 1, characterized in that The first flash control circuit comprises: An NMOS switch tube, wherein the gate of the NMOS switch tube is electrically connected to a PWM control signal, the source of the NMOS switch tube is grounded, and the PWM control signal is used to control the flash energy of the light emitting device; A freewheeling diode, wherein the input end of the freewheeling diode is electrically connected to the drain of the NMOS switch tube, and the output end of the freewheeling diode is electrically connected to the first end of the light emitting device; A choke inductor, one end of which is electrically connected to the second end of the light emitting device, and the other end of which is electrically connected to the input end of the freewheeling diode and the drain of the NMOS switch tube.

6. The flash lamp according to claim 1, characterized in that The light emitting device comprises one or more groups of LED lamp groups, each group of the LED lamp groups comprises one lamp bead or a plurality of lamp beads connected in series in sequence, and the LED lamp groups of each group are connected in parallel.

7. The flash lamp according to claim 6, characterized in that The lamp beads contained in each group of the LED lamp groups include single-color lamp beads with single temperature or multi-color lamp beads or multi-color temperature lamp beads or multi-color temperature and multi-color combination lamp beads.

8. The flash lamp according to claim 6, characterized in that The number of the LED light groups is the same as the number of the first flash control circuits, and each of the first flash control circuits is electrically connected to a corresponding group of the LED light groups.

9. The flash lamp according to claim 6, characterized in that The LED flash lamp circuit also includes a third flash control circuit, which is connected between the first end of the capacitor energy storage circuit and the first end of the light emitting device, and is used to control the capacitor energy storage circuit to output a voltage to the light emitting device.

10. The flash lamp according to claim 9, characterized in that The number of the LED light groups is the same as the number of the third flash control circuits, and each of the third flash control circuits is electrically connected to a corresponding group of the LED light groups; or, multiple groups of the LED light groups share one third flash control circuit.

11. The flash lamp according to claim 9, characterized in that The flash lamp also includes a charging circuit, which is connected to the third flash control circuit and the capacitor energy storage circuit respectively, and is used to charge the capacitor energy storage circuit with a set charging voltage according to a charging control instruction sent by the third flash control circuit.

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