Top flash lamp

Abstract

The utility model provides a set top flash lamp, and belongs to the technical field of photographic light. The set top flash lamp comprises a flash lamp host and a hot shoe base, and the hot shoe base is connected with the flash lamp host. The hot shoe base comprises a hot shoe interface and a signal conversion module. The hot shoe interface is used for being connected with external equipment (such as a hot shoe camera), and the signal conversion module is electrically connected with the hot shoe interface so as to convert input and output signals of the hot shoe interface into general input and output signals. And the signal conversion module is also electrically connected with the host main control module so as to transmit the converted general input and output signals to the host main control module. According to the invention, the signal conversion module is arranged on the hot shoe base, and the input and output signals of the hot shoe interface can be converted into general input and output signals, so that the set top flash lamp body can be compatible with hot shoe cameras of different brands, and the utilization rate of the set top flash lamp body can be improved.

Description

Technical Field

[0001] The present application relates to the field of photographic lighting, and in particular to a camera-mounted flash. Background Art

[0002] Whether in master, set-up light, or slave mode, on-camera flash units on the market must use a hot shoe interface that matches the camera's brand when communicating with the camera. For example, a flash unit communicating with a Canon camera must use a Canon hot shoe interface; a flash unit communicating with a Nikon camera must use a Nikon hot shoe interface. The flash unit's internal circuitry typically uses a master controller to couple the hot shoe interface circuit, lamp driver control module, focus motor module, LCD display module, and flash charging module into a complete circuit. Due to differences in hot shoe interface specifications and transmission signals between manufacturers, existing flash units are unable to adapt to the hot shoe interfaces of various camera brands. This results in low flash unit utilization and the need to provide different models of flash units for different camera models, which in turn leads to high production costs. Utility Model Content

[0003] The main purpose of the embodiment of the present application is to provide a set-top flash. By setting a signal conversion module on the hot shoe base, the input and output signals of the hot shoe interface can be converted into universal input and output signals, so that the set-top flash body can be compatible with hot shoe cameras of different brands, thereby improving the utilization rate of the set-top flash body.

[0004] To achieve the above-mentioned object, a first aspect of an embodiment of the present application provides a set-top flash, comprising: a flash host, wherein the flash host includes a host main control module;

[0005] a hot shoe base connected to the flash host, the hot shoe base comprising a hot shoe interface and a signal conversion module, the hot shoe interface being used to connect to an external device, the signal conversion module being electrically connected to the hot shoe interface, and the signal conversion module being configured to convert input and output signals of the hot shoe interface into universal input and output signals;

[0006] The signal conversion module is also electrically connected to the host main control module, and the signal conversion module is further configured to transmit the converted universal input and output signal to the host main control module.

[0007] In one embodiment of the present application, the signal conversion module includes a first universal input and output interface, a hot shoe main control module, and a second universal input and output interface;

[0008] The first universal input and output interface is electrically connected to the hot shoe interface, and the first universal input and output interface is also electrically connected to the hot shoe main control module;

[0009] The hot shoe main control module is also electrically connected to the second general input and output interface, and the second general input and output interface is also electrically connected to the host main control module;

[0010] The hot shoe main control module is configured to convert the input and output signals of the hot shoe interface connected by the first universal input and output interface into universal input and output signals, and transmit the converted universal input and output signals to the host main control module through the second universal input and output interface.

[0011] In one embodiment of the present application, the signal conversion module further includes a level conversion module, one end of the level conversion module is connected to the first universal input and output interface, and the other end of the level conversion module is connected to the hot shoe main control module;

[0012] The level conversion module is configured to perform level conversion on the input signal of the hot shoe interface connected to the first universal input / output interface and then input the signal to the hot shoe main control module.

[0013] In one embodiment of the present application, the signal conversion module further includes a logic conversion module, one end of the logic conversion module is connected to the first universal input and output interface, and the other end of the logic conversion module is connected to the hot shoe main control module;

[0014] The logic conversion module is configured to perform logic conversion on the control signal sent by the host main control module and received by the hot shoe main control module, and then output the control signal to the hot shoe interface via the first universal input and output interface.

[0015] In one embodiment of the present application, the hot shoe base includes a base circuit board and a connecting soft board, the signal conversion module is arranged on the base circuit board, the base circuit board is electrically connected to the host module through the connecting soft board, the second universal input and output interface includes multiple signal channels, and the connecting soft board is provided with multiple signal connection lines, and the multiple signal connection lines correspond one-to-one to the multiple signal channels.

[0016] In one embodiment of the present application, the on-camera flash further includes a first connector and a second connector, one end of the connecting soft board is connected to the second universal input and output interface through the first connector, and the other end of the connecting soft board is connected to the host main control module through the second connector.

[0017] In one embodiment of the present application, the multiple signal channels include a flash trigger signal forwarding channel, a sending signal channel and a receiving signal channel, wherein the flash trigger signal forwarding channel is used to forward the flash trigger signal of the hot shoe interface to the host main control module, the sending signal channel is used to transmit the mode signal, flash parameter adjustment signal and / or focus detection signal received by the hot shoe interface from the external device to the host main control module, and the receiving signal channel is used to receive the top flash connection in place signal output by the host main control module.

[0018] In one embodiment of the present application, the multiple signal channels further include a communication mode channel, a clock signal channel and a status indication channel. The communication mode channel is used to characterize the communication direction between the on-camera flash and the external device, the clock signal channel is used to transmit the camera clock signal received by the hot shoe interface, and the status indication channel is used to output the busy / idle status of the host main control module to the signal conversion module.

[0019] In one embodiment of the present application, the hot shoe base is provided with a connection structure, and the hot shoe base is fixedly connected to the flash host through the connection structure.

[0020] In one embodiment of the present application, the host main control module includes a universal input and output interface, and the host main control module is connected to the functional component through the universal input and output interface. The host main control module is configured to send a control signal to the functional component through the universal input and output interface, or to receive a trigger signal issued by the functional part through the universal input and output interface.

[0021] In one embodiment of the present application, the flash host includes a light-emitting mechanism, which is electrically connected to the host main control module. The flash trigger signal emitted by the external device is transmitted to the light-emitting mechanism through the hot shoe interface, the signal conversion module and the host main control module in sequence, so that the light-emitting mechanism emits a flash.

[0022] In one embodiment of the present application, the light emitting mechanism is configured as an LED lamp or a xenon lamp.

[0023] In one embodiment of the present application, the light-emitting mechanism includes an LED lamp and a xenon lamp, and the flash trigger signal emitted by the external device is transmitted to the light-emitting mechanism in sequence through the hot shoe interface, the signal conversion module and the host main control module, so that the LED lamp and the xenon lamp emit flashes at the same time.

[0024] In one embodiment of the present application, the flash host further comprises a host circuit board, an LED flash circuit and a xenon flash circuit;

[0025] The LED flash lamp circuit and the xenon flash lamp circuit are arranged on the host circuit board, and the host main control module is arranged on the host circuit board;

[0026] The LED flash lamp circuit and the xenon flash lamp circuit are electrically connected to the host main control module;

[0027] The LED lamp is electrically connected to the LED flash lamp circuit;

[0028] The xenon lamp is electrically connected to the xenon flash lamp circuit.

[0029] In the technical solution provided in the embodiment of the present application, the set-top flash includes a flash host and a hot shoe base, wherein the hot shoe base is connected to the flash host. The hot shoe base includes a hot shoe interface and a signal conversion module. The hot shoe interface is used to connect an external device (such as a camera hot shoe), and the signal conversion module is electrically connected to the hot shoe interface to convert the input and output signals of the hot shoe interface into universal input and output signals. The signal conversion module is also electrically connected to the host main control module to transmit the converted universal input and output signals to the host main control module. In the present application, by setting a signal conversion module on the hot shoe base, the input and output signals of the hot shoe interface can be converted into universal input and output signals, so that the set-top flash body can be compatible with hot shoe cameras of different brands, which can improve the utilization rate of the set-top flash body. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a set-top flash provided in one embodiment of the present application.

[0031] Figure 2 This is a schematic diagram of signal processing for a set-top flash provided in one embodiment of the present application.

[0032] Figure 3 2 is a schematic structural diagram of a hot shoe base provided in one embodiment of the present application.

[0033] Figure 4 This is a structural diagram of a connecting flexible board provided in one embodiment of the present application.

[0034] Figure 5 This is a structural diagram of a flash host provided in one embodiment of the present application.

[0035] Figure 6 This is a circuit block diagram of a set-top flash provided in one embodiment of the present application.

[0036] Description of reference numerals:

[0037] On-camera flash 100, camera 200, functional components 300, flash host 1, host main control module 10, universal input and output interface 101, lamp head 11, body 12, shaft 13, housing 111, focusing lens 112, light outlet 1111, host circuit board 121, rechargeable battery 122, light emitting mechanism 13, LED lamp 131, xenon lamp 132;

[0038] Hot shoe base 2, hot shoe interface 21, signal conversion module 22, first universal input and output interface 221, hot shoe main control module 222, second universal input and output interface 223, level conversion module 224, logic conversion module 225, base circuit board 23, connecting soft board 24, soft substrate 240, first signal connection line 241, second signal connection line 242, third signal connection line 243, fourth signal connection line 244, fifth signal connection line 245, sixth signal connection line 246, connection structure 25, first connector 29;

[0039] LED flash lamp circuit 51 , xenon flash lamp circuit 52 , capacitor energy storage circuit 501 , first flash control circuit 502 , second flash control circuit 503 . DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0041] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps illustrated or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and the like in the specification, claims, and drawings are used to distinguish similar objects and are not necessarily used to describe a specific sequence or precedence.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0043] Whether in master, set-up light, or slave mode, on-camera flash units on the market must use a hot shoe interface that matches the camera's brand when communicating with the camera. For example, a flash unit communicating with a Canon camera must use a Canon hot shoe interface; a flash unit communicating with a Nikon camera must use a Nikon hot shoe interface. The flash unit's internal circuit module typically uses a master controller to couple the hot shoe interface circuit, lamp driver control module, focus motor module, LCD screen display module, and flash charging module into a complete circuit. Due to the differences in hot shoe interface specifications and transmission signals between manufacturers, existing flash units are unable to adapt to the hot shoe interfaces of multiple camera brands. This results in low flash unit utilization and the need to provide different models of flash units for different camera models. This results in high production costs and inconvenience in subsequent upgrades and maintenance.

[0044] Based on this, an embodiment of the present application provides a set-top flash. By setting a signal conversion module on the hot shoe base, the input and output signals of the hot shoe interface can be converted into universal input and output signals, so that the set-top flash body can be compatible with hot shoe cameras of different brands, thereby improving the utilization rate of the set-top flash body.

[0045] Reference Figure 1-Figure 5 , Figure 1 This is a schematic structural diagram of a set-top flash provided in one embodiment of the present application. Figure 2 This is a schematic diagram of signal processing for a set-top flash provided in one embodiment of the present application. Figure 3 2 is a schematic structural diagram of a hot shoe base provided in one embodiment of the present application. Figure 4 This is a structural diagram of a connecting flexible board provided in one embodiment of the present application. Figure 52 is a schematic diagram of the structure of a flash host provided in one embodiment of the present application. The on-camera flash 100 includes a flash host 1 and a hot shoe base 2. The hot shoe base 2 is connected to the flash host 1. The hot shoe base 2 is provided with a hot shoe interface 21, which is used to connect to an external device such as a camera hot shoe. The flash host 1 is connected to the camera hot shoe via the hot shoe interface 21 in the hot shoe base 2, thereby achieving an electrical connection between the flash host 1 and the camera, and enabling the flash host 1 and the camera to operate synchronously. The hot shoe is a device integrated into the camera that allows an external flash to be connected to the camera 200. The camera 200 with a hot shoe has an additional slot to allow the attached flash to communicate with the camera. When taking a photo, the hot shoe sends a signal to the on-camera flash 100 to ensure that the on-camera flash 100 ignites when the shutter is activated. For ordinary photography, the built-in flash of a typical camera is sufficient. For photographers pursuing high-quality images, an external camera flash can provide better lighting conditions, allow for different angles of illumination, adjust light brightness, and is more durable. In the embodiment of the present application, a hot shoe interface 21 provided on the hot shoe base 2 enables electrical connection between the flash unit 1 and the camera 200. However, given the differences in specifications and transmission signals of hot shoe interfaces 21 across different manufacturers and brands, existing on-camera flash units 100 are unable to adapt to the hot shoe interfaces 21 of various camera brands, resulting in low utilization of the on-camera flash unit 100. To address this issue, the embodiment of the present application provides a signal conversion module 22 on the hot shoe base 2. The signal conversion module 22 is electrically connected to the hot shoe interface 21 and to the main control module 10 within the flash unit 1. The signal conversion module 22 converts the input and output signals of the hot shoe interface 21 into universal input and output signals, and transmits the converted universal input and output signals to the main control module 10 within the flash unit 1. This makes the flash unit 1 compatible with hot shoe cameras of different brands, thereby improving the utilization of the flash unit 1.

[0046] In the embodiment of the present application, the on-set flash 100 is electrically connected to the camera 200, so that when the camera 200 is used to shoot, the on-set flash 100 can provide illumination for the photographed object or scene under low-light conditions. For optimal color rendering, the color of the on-set flash 100 can match the hue of the subject and / or the entire photographic scene, thereby improving the quality of the captured image.

[0047] See Figure 2The signal processing module 22 includes a first universal input / output interface 221, a hot shoe master control module 222, and a second universal input / output interface 223. The first universal input / output interface 221 is electrically connected to the hot shoe interface 21, and the first universal input / output interface 221 is also electrically connected to the hot shoe master control module 222. The hot shoe master control module 222 is also electrically connected to the second universal input / output interface 223, and the second universal input / output interface 223 is also electrically connected to the host master control module 10 in the flash body 1. The hot shoe master control module 222 is configured to convert the input / output signals of the hot shoe interface 21 connected by the first universal input / output interface 221 into universal input / output signals, and transmit the converted universal input / output signals to the host master control module 10 via the second universal input / output interface 223.

[0048] In some embodiments, see Figure 2 The signal conversion module includes a level conversion module 224 and a logic conversion module 225. One end of the level conversion module 224 is connected to the first universal input / output interface 221, and the other end of the level conversion module 224 is connected to the hot shoe master control module 222. One end of the logic conversion module 225 is connected to the first universal input / output interface 221, and the other end of the logic conversion module 225 is connected to the hot shoe master control module 222. The level conversion module 224 is configured to perform level conversion on the input signal of the hot shoe interface 21 connected by the first universal input / output interface 221 and then input it to the hot shoe master control module 222. The logic conversion module 225 is configured to perform logic conversion on the control signal sent by the host main control module 10 received by the hot shoe master control module 222 and then output it to the hot shoe interface 21 via the first universal input / output interface 221.

[0049] In this embodiment of the present application, the hot shoe interface 21 is used to connect to an external device, such as a camera hot shoe, to receive control signals from the camera. The control signals are then converted by the level conversion module 224 and transmitted to the hot shoe master control module 222. The hot shoe master control module 222 processes the signals and transmits them to the host master control module 10 in the flash unit 1. The host master control module 10 then controls the corresponding functional components based on the camera control signals. In this embodiment of the present application, the hot shoe interface contacts (CLK, SI, etc.) correspond one-to-one with the pins of the hot shoe master control module 222. This converts the electrical levels and functional definitions represented by the hot shoe interface into single or multiple high and low levels. Specifically, the hot shoe master control module 222 converts the original hot shoe interface 21 into a unified interface, while the functional meaning is handled by communication between the circuit boards corresponding to the hot shoe master control module and the circuit boards corresponding to the host master control module.

[0050] Exemplarily, the camera end sends a trigger flash signal X-SYNC which is connected to the first universal input and output interface 221 through the hot shoe interface 21. The trigger flash signal X-SYNC is output through the first universal input and output interface 221 as a signal representing a low level. After level conversion by the level conversion module, the output signal representing a low level is transmitted to the signal input interface corresponding to the hot shoe main control module 222, and is further outputted by the corresponding signal output interface of the hot shoe main control module 222 to the signal input interface corresponding to the host main control module 10. The host main control module 10 triggers the flash to flash according to the low level signal of the signal input interface.

[0051] In the embodiment of the present application, the signals transmitted from the on-camera flash 100 generally include signals indicating whether the on-camera flash is installed correctly, the battery level of the on-camera flash, or whether the flash is ready for use. The signals returned from the on-camera flash 100 to the camera are first transmitted via the host main control module 10 to the hot shoe main control module 222, then flow into the hot shoe main control module 222 via the second universal input / output interface 223. After being processed by the hot shoe main control module 222, they are transmitted to the logic conversion module 225. After being logically converted by the logic conversion module 225, they flow into the hot shoe interface via the first universal input / output interface 221, allowing the camera to receive the signals returned from the on-camera flash 100.

[0052] In the embodiment of the present application, by providing a signal conversion module 22, a bridge for signal transmission between the on-camera flash 100 and the camera end can be established. By allocating basic IO ports (i.e., input and output ports), the degree of coupling between the circuit of the hot shoe interface 21 and the circuit of the host main control module 10 can be reduced. The interface identification part is separated out separately, and the meaning mapping represented by the signals between the interfaces can be flexibly defined through the program. The signal transmission between the hot shoe main control module 222 and the host main control module 10 is transmitted using data packets. In this way, the flash host structure and its corresponding circuit can be made universal between different models of camera hot shoes. Only the contact pin interface structure of the hot shoe base needs to be replaced and the corresponding control program needs to be burned. There is no need to design different board circuits for the circuit structure of the flash unit.

[0053] In some embodiments, reference Figure 2The host main control module 10 includes a universal input / output interface 101. The host main control module 10 is connected to the functional component 300 via the universal input / output interface 101. The host main control module 10 is configured to send control signals to the functional component 300 via the universal input / output interface 101, or to receive trigger signals from the functional component 300 via the universal input / output interface 101. The functional component 300 may include a flash light source, an indicator light, a display screen, a motor / stepping motor, operating buttons / knobs, a buzzer, and the like. Specifically, the host main control module 10 can receive control signals from the camera and control the corresponding functional component 300 based on these control signals. For example, if the camera sends a flash trigger signal, the flash trigger signal is transmitted to the host main control module 10 via the hot shoe interface 21, the first universal input / output interface 221, the level conversion module 224, the hot shoe main control module 222, and the second universal input / output interface 223. The host main control module 10 then sends a control signal to the flash light source based on this flash trigger signal, thereby controlling the flash light source to flash.

[0054] See also Figure 1 The flashlight body 1 in this embodiment includes a lamp head 11 and a body 12. A light focusing device (not shown in the figure) is provided in the lamp head 11 for changing the focal length of the flashlight.

[0055] In some embodiments, see Figure 1 The lamp head 11 includes a shell 111 and a focusing lens 112. A accommodating cavity is provided inside the shell 111, and a light outlet 1111 is provided on the front face of the shell 111, which connects the accommodating cavity with the external environment. The focusing lens 112 covers the light outlet 1111 of the shell 111, and is used to focus the light passing through the focusing lens 112. The body 12 is rotatably connected to the shell 111 through the rotating shaft 13, so that the lamp head 11 can be pitched on the body 12, thereby changing the light output angle of the light focusing device in the lamp head 11, so as to further improve the convenience of using the flash body 1.

[0056] See also Figure 1 In some embodiments, the housing 111 of the lamp holder 11 can be made of a high-strength, heat-resistant material, which has excellent durability, heat dissipation, and impact resistance. The housing 111 can be an integrally molded design and can be shaped like a trumpet. The internal cavity of the housing 111 can also be shaped like a trumpet to facilitate the emission of light within the cavity.

[0057] In some embodiments, the light outlet 1111 on the front surface of the housing 111 can be circular in shape. The light outlet 1111 connects the housing cavity of the housing 111 with the external environment, allowing light emitted by the light source 13 in the housing 111 to be smoothly emitted through the light outlet 1111. The diameter of the light outlet 1111 can be determined according to the size of the focusing lens 112 or the desired light effect.

[0058] In some embodiments, the focusing lens 112 may be a Fresnel lens, which has excellent optical focusing performance. The focusing lens 112 may be fixed to the light outlet 1111 of the housing 111 via a slot or screws, isolating the housing 111 cavity from the external environment. This allows light emitted by the light source 13 within the housing 111 to be focused by the focusing lens 112 and then emitted. Furthermore, the curvature of the focusing lens 112 may be selected based on actual conditions to achieve optimal lighting effects.

[0059] Reference Figure 3 The hot shoe base 2 includes a base circuit board 23 and a flexible connection board 24. A signal conversion module 22 is disposed within the base circuit board 23, which is connected to the host circuit board 121 via the flexible connection board 24. Specifically, the signal conversion module 22 disposed within the base circuit board 23 can be electrically connected to the host main control module 10 disposed within the host circuit board 121 via the flexible connection board 24. This enables signal exchange between the camera and the flash host 1. Furthermore, the signal conversion module 22 converts the input and output signals of the hot shoe interface 21 into universal input and output signals, making the flash body 1 compatible with hot shoe cameras of different brands and improving the flash body's utilization.

[0060] In some embodiments, reference Figure 4The flexible connection board 24 includes a flexible substrate 240 and a plurality of signal connection lines disposed on the flexible substrate 240. The signal connection lines may be printed copper foil lines or similar conductive lines. For example, the plurality of signal connection lines include a first signal connection line 241, a second signal connection line 242, a third signal connection line 243, a fourth signal connection line 244, a fifth signal connection line 245, and a sixth signal connection line 246. Correspondingly, the second universal input / output interface 223 may include multiple signal channels, each of which is connected one-to-one to the plurality of signal connection lines, thereby establishing a universal inter-board signal interface connection between the signal conversion module 22 and the host main control module 10. The plurality of signal channels may include a flash trigger signal forwarding channel, a transmit signal channel, a receive signal channel, a communication mode channel, a clock signal channel, a status indication channel, and the like. The flash trigger signal forwarding channel may be used to forward the flash trigger signal from the hot shoe interface 21 to the host main control module 10. The transmit signal channel can be used to transmit the mode signal, flash parameter adjustment signal, and / or focus detection signal received from the hot shoe interface 21 from the external device to the host main control module 10. The receive signal channel can be used to receive the on-camera flash connection in place signal output by the host main control module 10. The communication mode channel can be used to indicate the communication direction between the on-camera flash 100 and the external device. For example, a high level indicates that the on-camera flash 100 is transmitting a signal to the external device (such as a camera), while a low level indicates that the external device is transmitting a signal to the on-camera flash 100. Alternatively, a low level indicates that the on-camera flash 100 is transmitting a signal to the external device (such as a camera), while a high level indicates that the external device is transmitting a signal to the on-camera flash 100. The clock signal channel can be used to transmit the camera clock signal received by the hot shoe interface 21. The status indication channel can be used to output the busy / idle status of the host main control module 10 to the signal conversion module 22.

[0061] In some embodiments, reference Figure 4 The on-camera flash 100 may further include a first connector 29 and a second connector (not labeled in the figure). The first connector 29 may be disposed in the hot shoe base 2. One end of the connecting flexible board 24 may be connected to the second universal input / output interface 223 via the first connector 29. The other end of the connecting flexible board 24 may also be connected to the host main control module 10 via the second connector.

[0062] In some embodiments, reference Figure 3 The hot shoe base 2 also includes a connecting structure 25, through which the hot shoe base 2 can be fixedly connected to the flash host 1, so that the hot shoe base 2 and the flash body 1 form an integrated structure.

[0063] In some embodiments, reference Figure 1A light-emitting mechanism 13 is provided in the lamp head 11 and is installed in the accommodating cavity. The light emitted by the light-emitting mechanism 13 passes through the light-transmitting port and then is emitted through the focusing lens 112 on the shell 111. A host circuit board 121 and a rechargeable battery 122 are provided in the body 12. The rechargeable battery 122 is electrically connected to the host circuit board 121. The host main control module 10 is provided in the host circuit board 121. The light-emitting mechanism 13 is electrically connected to the host main control module 10 to receive the control signal sent by the host main control module 10.

[0064] In some embodiments, the light emitting mechanism 13 may include an LED lamp or a xenon lamp.

[0065] In some embodiments, reference Figure 5 The light-emitting mechanism 13 includes an LED lamp 131 and a xenon lamp 132. Both the LED lamp 131 and the xenon lamp 132 are electrically connected to the host circuit board 121, so that the host circuit board 121 can control the operation of the LED lamp 131 and the xenon lamp 132. The light generated by the LED lamp 131 and the light generated by the xenon lamp 132 are both emitted from the light outlet.

[0066] Among them, the LED lamp 131 can provide soft lighting for the photographed object, and the xenon lamp 132 can provide high-brightness lighting for the photographed object. Therefore, by setting the LED lamp 131 and the xenon lamp 132, the flash can provide both soft lighting and high-brightness lighting for the photographed object. It is also possible to use the LED lamp 131 and the xenon lamp 132 simultaneously for fill light, increasing the chromaticity of the fill light, thereby making the top flash suitable for shooting scenes with different brightness. In other words, the top flash of this application can meet the needs of different flash effects in different shooting scenes, fully meeting more personalized creative needs. Moreover, during use, you can turn on the corresponding lamp as needed, making it convenient to use.

[0067] The xenon lamp 132 can be set on the light path of the LED lamp 131, and the light emitting area of the LED lamp 131 coincides with the light emitting area of the xenon lamp 132, so that the light spot position generated by the LED lamp 131 in the flash is the same as the light spot position generated by the xenon lamp 132, thereby making the light output of the flash more uniform.

[0068] In an embodiment of the present application, a flash trigger signal emitted by an external device (such as a hot shoe camera) is transmitted to the light-emitting mechanism 13 in sequence through the hot shoe interface 21, the signal conversion module 22 and the host main control module 10, so that the LED lamp 131 and the xenon lamp 132 can emit flashes at the same time.

[0069] Refer to Figure 5 and Figure 6 ,in Figure 6This is a circuit block diagram of a set-top flash provided in one embodiment of the present application. An LED flash circuit 51 and a xenon flash circuit 52 are provided on the host circuit board 121. An LED lamp 131 is electrically connected to the LED flash circuit 51, and the operation of the LED lamp 131 is controlled by the LED flash circuit 51. A xenon lamp 132 is electrically connected to the xenon flash circuit 52, and the operation of the xenon lamp 132 is controlled by the xenon flash circuit 52. The LED flash circuit 51 and the xenon flash circuit 52 are both provided on the host circuit board 121 and are electrically connected to the host main control module 10. This allows the set-top flash to be compatible with various existing camera models without requiring the LED flash circuit 51 and the xenon flash circuit 52 to be provided on the camera's control board.

[0070] Reference Figure 5 The LED flash circuit 51 includes a capacitor tank circuit 501 and a first flash control circuit 502. A first end of the capacitor tank circuit 501 is electrically connected to the LED lamp 131, a second end of the capacitor tank circuit 501 is grounded, and the first end of the capacitor tank circuit 501 is also connected to a power supply voltage V IN. The capacitor tank circuit 501 can store a certain amount of electricity. When a flash is required, the stored electricity can be output to the LED lamp 131, enabling the LED lamp 131 to emit a corresponding flash. The first flash control circuit 502 is electrically connected to the LED lamp 131 and can control the flash energy of the LED lamp 131. In other words, the capacitor tank circuit 501 and the first flash control circuit 502 can cause the LED lamp 131 to emit flashes with different lighting parameters (such as different color temperatures or colors), or combinations thereof.

[0071] The xenon flash circuit 52 primarily uses a high-voltage current to activate xenon gas, forming an arc beam that provides high color temperature and highly focused illumination. This technology breaks away from the traditional tungsten filament lighting principle by filling a quartz tube with a high-pressure inert gas (i.e., xenon), replacing the traditional filament. 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 two electrodes, emitting light that approaches the perfect brightness of sunlight. This technology not only improves color temperature but also significantly reduces energy consumption.

[0072] The xenon flash circuit 52 is triggered by storing sufficient energy in a high-voltage capacitor and then releasing it into the lamp tube. This energy excites the xenon gas inside the tube, generating light. The xenon lamp 132 emits light by utilizing positive and negative currents to stimulate a chemical reaction between argon gas and a rare metal. Therefore, the tube contains a small glass globe filled with argon gas and a small amount of rare metal. When an electric current is applied to stimulate the chemical reaction, the two components emit light with a color temperature of 4000K to 12000K. The xenon flash circuit 52 provides a broad-spectrum, sunlight-like flash illumination capability.

[0073] The xenon flash circuit 52 includes a capacitor energy storage circuit 501 and a second flash control circuit 503. A first end of the capacitor energy storage circuit 501 is electrically connected to the xenon lamp 132. The second flash control circuit 503 is electrically connected to the xenon lamp 132 and is used to control the flash energy of the xenon lamp 132.

[0074] In one embodiment, the LED flash circuit 51 and the xenon flash circuit 52 can share a capacitor energy storage circuit 501, which can save circuit components and layout space, thereby reducing costs. In other embodiments, the LED flash circuit 51 and the xenon flash circuit 52 may not share the capacitor energy storage circuit 501. In other words, the LED flash circuit 51 and the xenon flash circuit 52 may each include a corresponding capacitor energy storage circuit.

[0075] The embodiments described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0076] Those skilled in the art will 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 shown in the figures, or a combination of certain steps, or different steps.

[0077] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0078] Those skilled in the art will appreciate that all or some of the steps in the methods, systems, and functional modules / units in the devices disclosed above may be implemented as software, firmware, hardware, or appropriate combinations thereof.

[0079] 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 are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0080] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0081] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0082] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0083] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0084] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store programs.

[0085] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention should be within the scope of the present invention.

Claims

1. A top flash, characterized in that: include: A flash host, comprising a host control module; a hot shoe base connected to the flash host, the hot shoe base comprising a hot shoe interface and a signal conversion module, the hot shoe interface being used to connect to an external device, the signal conversion module being electrically connected to the hot shoe interface, and the signal conversion module being configured to convert input and output signals of the hot shoe interface into universal input and output signals; The signal conversion module is also electrically connected to the host main control module, and the signal conversion module is further configured to transmit the converted universal input and output signal to the host main control module.

2. The on-camera flash according to claim 1, wherein: The signal conversion module includes a first universal input and output interface, a hot shoe main control module and a second universal input and output interface; The first universal input and output interface is electrically connected to the hot shoe interface, and the first universal input and output interface is also electrically connected to the hot shoe main control module; The hot shoe main control module is also electrically connected to the second general input and output interface, and the second general input and output interface is also electrically connected to the host main control module; The hot shoe main control module is configured to convert the input and output signals of the hot shoe interface connected by the first universal input and output interface into universal input and output signals, and transmit the converted universal input and output signals to the host main control module through the second universal input and output interface.

3. The on-camera flash according to claim 2, wherein: The signal conversion module further includes a level conversion module, one end of which is connected to the first universal input and output interface, and the other end of which is connected to the hot shoe main control module; The level conversion module is configured to perform level conversion on the input signal of the hot shoe interface connected to the first universal input / output interface and then input the signal to the hot shoe main control module.

4. The top flash according to claim 2 or 3, characterized in that: The signal conversion module further includes a logic conversion module, one end of which is connected to the first universal input and output interface, and the other end of which is connected to the hot shoe main control module; The logic conversion module is configured to perform logic conversion on the control signal sent by the host main control module and received by the hot shoe main control module, and then output the control signal to the hot shoe interface via the first universal input and output interface.

5. The on-camera flash according to claim 2, wherein: The hot shoe base includes a base circuit board and a connecting soft board. The signal conversion module is arranged on the base circuit board. The base circuit board is electrically connected to the host main control module through the connecting soft board. The second universal input and output interface includes multiple signal channels. The connecting soft board is provided with multiple signal connection lines, and the multiple signal connection lines correspond one-to-one to the multiple signal channels.

6. The on-camera flash according to claim 5, wherein: The on-camera flash further includes a first connector and a second connector. One end of the connecting flexible board is connected to the second universal input and output interface through the first connector, and the other end of the connecting flexible board is connected to the host main control module through the second connector.

7. The on-camera flash according to claim 5, wherein: The multiple signal channels include a flash trigger signal forwarding channel, a sending signal channel and a receiving signal channel, wherein the flash trigger signal forwarding channel is used to forward the flash trigger signal of the hot shoe interface to the host main control module, the sending signal channel is used to transmit the mode signal, flash parameter adjustment signal and / or focus detection signal received by the hot shoe interface from the external device to the host main control module, and the receiving signal channel is used to receive the top flash connection in place signal output by the host main control module.

8. The on-camera flash according to claim 7, wherein: The multiple signal channels further include a communication mode channel, a clock signal channel and a status indication channel. The communication mode channel is used to characterize the communication direction between the on-camera flash and the external device. The clock signal channel is used to transmit the camera clock signal received by the hot shoe interface. The status indication channel is used to output the busy / idle status of the host main control module to the signal conversion module.

9. The on-camera flash according to claim 1, wherein: The hot shoe base is provided with a connection structure, and the hot shoe base is fixedly connected to the flash host through the connection structure.

10. The on-camera flash according to claim 1, wherein: The host main control module includes a universal input and output interface, and the host main control module is connected to the functional component through the universal input and output interface. The host main control module is configured to send a control signal to the functional component through the universal input and output interface, or receive a trigger signal issued by the functional part through the universal input and output interface.

11. The on-camera flash according to claim 1, wherein: The flash host includes a light-emitting mechanism, which is electrically connected to the host main control module. The flash trigger signal emitted by the external device is transmitted to the light-emitting mechanism through the hot shoe interface, the signal conversion module and the host main control module in sequence, so that the light-emitting mechanism emits a flash.

12. The on-camera flash according to claim 11, wherein: The light emitting mechanism is configured as an LED lamp or a xenon lamp.

13. The on-camera flash according to claim 11, wherein: The light-emitting mechanism includes an LED lamp and a xenon lamp. The flash trigger signal emitted by the external device is transmitted to the light-emitting mechanism through the hot shoe interface, the signal conversion module and the host main control module in sequence, so that the LED lamp and the xenon lamp emit flashes at the same time.

14. The on-camera flash according to claim 13, wherein: The flash host also includes a host circuit board, an LED flash circuit and a xenon flash circuit; The LED flash lamp circuit and the xenon flash lamp circuit are arranged on the host circuit board, and the host main control module is arranged on the host circuit board; The LED flash lamp circuit and the xenon flash lamp circuit are electrically connected to the host main control module; The LED lamp is electrically connected to the LED flash lamp circuit; The xenon lamp is electrically connected to the xenon flash lamp circuit.

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