Light supplementing lamp and dual-power-supply switching circuit thereof

Abstract

The utility model discloses a light supplement lamp and a dual power supply switching circuit thereof. The circuit comprises a main power supply interface, an auxiliary power supply interface, a load interface, a detection switching module, a switch tube Q1 and a switch tube Q2. The detection switching module is used for controlling the switch tube Q1 to be switched on and the switch tube Q2 to be switched off when the main power supply interface has input voltage and the input voltage meets the requirement, and controlling the switch tube Q1 to be switched off and the switch tube Q2 to be switched on when the main power supply interface does not have input voltage or the input voltage does not meet the requirement. According to the technical scheme, a switch tube Q1, a switch tube Q2 and a detection switching module are configured, and the detection switching module controls the switch-on and switch-off of the switch tube Q1 and the switch tube Q2 according to voltage amplitudes input by a main power supply interface and an auxiliary power supply interface. And when the main power supply interface does not have input voltage or the input voltage does not meet the requirement, the switch tube Q1 is controlled to be switched off and the switch tube Q2 is controlled to be switched on, so that the dual-power-supply switching function of the light supplement lamp is realized, and the light supplement lamp can be conveniently used outdoors for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, and more specifically to a fill light and a dual power supply switching circuit thereof. Background Art

[0002] Fill lights are used to compensate for the lack of illumination of certain equipment or plants. Common fill lights include greenhouse fill lights, photography fill lights, and license plate fill lights. Fill lights are most widely used in the photography industry. Workers use fill lights to provide auxiliary light when shooting in the absence of light conditions, so as to obtain reasonable picture materials.

[0003] At present, there are two power supply modes for fill lights: AC power supply and DC power supply. Among them, DC power supply fill lights are favored by customers because they have a wide variety of power supply devices and are convenient for outdoor use. Existing DC power supply fill lights generally use a single power supply mode. When users need to use the fill lights for a long time in the wild, it is easy to be affected by insufficient power. Utility Model Content

[0004] In order to solve one or more of the above technical problems, the purpose of the present utility model is to provide a fill light and a dual power switching circuit thereof.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A dual power switching circuit for a fill light, comprising a main power interface, a secondary power interface, a load interface, a detection switching module, a switch tube Q1 and a switch tube Q2;

[0007] The detection switching module is connected to the gate of the switch tube Q1 and the gate of the switch tube Q2 respectively, the main power interface is connected to the drain of the switch tube Q1, the source of the switch tube Q1 is connected to the load interface, the secondary power interface is connected to the drain of the switch tube Q2, and the source of the switch tube Q2 is connected to the load interface;

[0008] The detection switching module is configured to control the switch tube Q1 to be turned on and the switch tube Q2 to be turned off when there is an input voltage at the main power interface and the input voltage meets the requirements; and to control the switch tube Q1 to be turned off and the switch tube Q2 to be turned on when there is no input voltage at the main power interface or the input voltage does not meet the requirements.

[0009] As a further improvement of the above technical solution, the present technical solution further includes a switch tube Q3, the detection switching module is connected to the gate of the switch tube Q3, the secondary power interface is connected to the source of the switch tube Q3, the drain of the switch tube Q3 is connected to the drain of the switch tube Q2, and the source of the switch tube Q2 is connected to the load interface;

[0010] The detection switching module is configured to control the switch tube Q1 to be turned on when there is an input voltage at the main power interface and the input voltage meets the requirements, and to control the switch tube Q2 and the switch tube Q3 to be turned off at the same time; when there is no input voltage at the main power interface or the input voltage does not meet the requirements, control the switch tube Q1 to be turned off, and to control the switch tube Q2 and the switch tube Q3 to be turned on at the same time.

[0011] As a further improvement of the above technical solution, the detection switching module includes transistor A1, transistor A2, transistor A3, transistor A4, transistor A5, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, resistor R13 and resistor R14, the main power interface and the auxiliary power interface are both configured with a first power end and a second power end, and the load interface is configured with a first load end and a second load end;

[0012] The second power supply end of the main power supply interface, the second power supply end of the auxiliary power supply interface and the second load end of the load interface are connected together, the two ends of the resistor R1 are connected to the first power supply end and the second power supply end of the main power supply interface in a one-to-one correspondence, the first power supply end of the main power supply interface is respectively connected to one end of the resistor R2 and the drain of the switch tube Q1, the other end of the resistor R2 is respectively connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R3 is respectively connected to the second power supply end of the main power supply interface and the drain of the switch tube Q1 The emitter of the transistor A1 is connected to the emitter of the transistor A1, the other end of the resistor R4 is connected to the base of the transistor A1, the collector of the transistor A1 is respectively connected to one end of the resistor R5, one end of the resistor R6 and one end of the resistor R7, the other end of the resistor R5 is connected to the gate of the switch tube Q1, the source of the switch tube Q1 is connected to the first load end of the load interface, the other end of the resistor R6 is connected to the base of the transistor A3, the other end of the resistor R7 is respectively connected to the first power supply end of the auxiliary power supply interface, the source of the switch tube Q3 , one end of the resistor R8 is connected to one end of the resistor R9, the other end of the resistor R8 is connected to the emitter of the transistor A3, the collector of the transistor A3 is respectively connected to the base of the transistor A4, the base of the transistor A5 and one end of the resistor R11, the other end of the resistor R11 is connected to one end of the resistor R12, one end of the resistor R13, one end of the resistor R14 and the second power supply end of the main power supply interface, the other end of the resistor R12 is respectively connected to one end of the resistor R10 and the transistor The base of the transistor A2 is connected to the base of the transistor A2, the other end of the resistor R10 is connected to the first power supply end of the main power supply interface, the other end of the resistor R9 is connected to the collector of the transistor A4, the emitter of the transistor A4 is respectively connected to the emitter of the transistor A5 and the gate of the switch tube Q3, the other end of the resistor R13 is connected to the collector of the transistor A5, the other end of the resistor R14 is respectively connected to the emitter of the transistor A2 and the gate of the switch tube Q2, and the collector of the transistor A2 is connected to the source of the switch tube Q1.

[0013] As a further improvement of the above technical solution, the present technical solution further includes a capacitor C1, and two ends of the capacitor C1 are connected to the first load end and the second load end of the load interface in a one-to-one correspondence.

[0014] The utility model also discloses a fill light, comprising a light source module and the above-mentioned dual power supply switching circuit, wherein two ends of the light source module are connected to the first load end and the second load end of the load interface in a one-to-one correspondence.

[0015] The beneficial effect of the utility model is that: the technical scheme is configured with a switch tube Q1, a switch tube Q2 and a detection switching module, and the detection switching module controls the conduction and cutoff of the switch tube Q1 and the switch tube Q2 according to the voltage amplitude input from the main power interface and the auxiliary power interface. When there is no input voltage at the main power interface or the input voltage does not meet the requirements, the switch tube Q1 is controlled to be cut off and the switch tube Q2 is controlled to be turned on, thereby realizing the dual power switching function of the fill light, which is convenient for the fill light to be used for a long time in the wild. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a circuit module framework diagram of the utility model;

[0018] Figure 2 It is a circuit schematic diagram of the utility model. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] In the description of the present invention, it should be understood that the descriptions involving orientations, such as up, down, front, back, left, right, etc., and the orientations or positional relationships indicated are based on the orientations or positional relationships described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Reference Figure 1 and Figure 2 The present application discloses a dual power switching circuit for a fill light, wherein a first embodiment thereof includes a main power interface, a secondary power interface, a load interface, a detection switching module, a switch tube Q1, and a switch tube Q2;

[0024] The detection switching module is connected to the gate of the switch tube Q1 and the gate of the switch tube Q2 respectively, the main power interface is connected to the drain of the switch tube Q1, the source of the switch tube Q1 is connected to the load interface, the secondary power interface is connected to the drain of the switch tube Q2, and the source of the switch tube Q2 is connected to the load interface;

[0025] The detection switching module is configured to control the switch tube Q1 to be turned on and the switch tube Q2 to be turned off when there is an input voltage at the main power interface and the input voltage meets the requirements; and to control the switch tube Q1 to be turned off and the switch tube Q2 to be turned on when there is no input voltage at the main power interface or the input voltage does not meet the requirements.

[0026] Specifically, this embodiment is configured with the switch tube Q1, the switch tube Q2 and the detection switching module. The detection switching module controls the on and off of the switch tube Q1 and the switch tube Q2 according to the voltage amplitude input from the main power interface and the auxiliary power interface. When there is no input voltage at the main power interface or the input voltage does not meet the requirements, the switch tube Q1 is controlled to be cut off and the switch tube Q2 is controlled to be turned on, thereby realizing the dual power switching function of the fill light, which facilitates the fill light to be used for a long time in the wild.

[0027] Further as a preferred implementation, this embodiment further includes a switch tube Q3, the detection switching module is connected to the gate of the switch tube Q3, the secondary power interface is connected to the source of the switch tube Q3, the drain of the switch tube Q3 is connected to the drain of the switch tube Q2, and the source of the switch tube Q2 is connected to the load interface;

[0028] The detection switching module is configured to control the switch tube Q1 to be turned on when there is an input voltage at the main power interface and the input voltage meets the requirements, and to control the switch tube Q2 and the switch tube Q3 to be turned off at the same time; when there is no input voltage at the main power interface or the input voltage does not meet the requirements, control the switch tube Q1 to be turned off, and to control the switch tube Q2 and the switch tube Q3 to be turned on at the same time.

[0029] Specifically, in this embodiment, the detection switching module includes transistor A1, transistor A2, transistor A3, transistor A4, transistor A5, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, resistor R13 and resistor R14, the main power interface and the auxiliary power interface are both configured with a first power end and a second power end, and the load interface is configured with a first load end and a second load end;

[0030] The second power supply end of the main power supply interface, the second power supply end of the auxiliary power supply interface and the second load end of the load interface are connected together, the two ends of the resistor R1 are connected to the first power supply end and the second power supply end of the main power supply interface in a one-to-one correspondence, the first power supply end of the main power supply interface is respectively connected to one end of the resistor R2 and the drain of the switch tube Q1, the other end of the resistor R2 is respectively connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R3 is respectively connected to the second power supply end of the main power supply interface and the drain of the switch tube Q1 The emitter of the transistor A1 is connected to the emitter of the transistor A1, the other end of the resistor R4 is connected to the base of the transistor A1, the collector of the transistor A1 is respectively connected to one end of the resistor R5, one end of the resistor R6 and one end of the resistor R7, the other end of the resistor R5 is connected to the gate of the switch tube Q1, the source of the switch tube Q1 is connected to the first load end of the load interface, the other end of the resistor R6 is connected to the base of the transistor A3, the other end of the resistor R7 is respectively connected to the first power supply end of the auxiliary power supply interface, the source of the switch tube Q3 , one end of the resistor R8 is connected to one end of the resistor R9, the other end of the resistor R8 is connected to the emitter of the transistor A3, the collector of the transistor A3 is respectively connected to the base of the transistor A4, the base of the transistor A5 and one end of the resistor R11, the other end of the resistor R11 is connected to one end of the resistor R12, one end of the resistor R13, one end of the resistor R14 and the second power supply end of the main power supply interface, the other end of the resistor R12 is respectively connected to one end of the resistor R10 and the transistor The base of the transistor A2 is connected to the base of the transistor A2, the other end of the resistor R10 is connected to the first power supply end of the main power supply interface, the other end of the resistor R9 is connected to the collector of the transistor A4, the emitter of the transistor A4 is respectively connected to the emitter of the transistor A5 and the gate of the switch tube Q3, the other end of the resistor R13 is connected to the collector of the transistor A5, the other end of the resistor R14 is respectively connected to the emitter of the transistor A2 and the gate of the switch tube Q2, and the collector of the transistor A2 is connected to the source of the switch tube Q1.

[0031] As a further preferred implementation, the present embodiment further includes a capacitor C1, and two ends of the capacitor C1 are connected to the first load end and the second load end of the load interface in a one-to-one correspondence.

[0032] The present application also discloses a fill light, a first embodiment of which includes a light source module and a first embodiment of the dual power switching circuit, wherein two ends of the light source module are connected one-to-one with a first load end and a second load end of the load interface.

[0033] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dual power switching circuit for a fill light, characterized in that: It includes a main power interface, a secondary power interface, a load interface, a detection switching module, a switch tube Q1 and a switch tube Q2; The detection switching module is connected to the gate of the switch tube Q1 and the gate of the switch tube Q2 respectively, the main power interface is connected to the drain of the switch tube Q1, the source of the switch tube Q1 is connected to the load interface, the secondary power interface is connected to the drain of the switch tube Q2, and the source of the switch tube Q2 is connected to the load interface; The detection switching module is configured to control the switch tube Q1 to be turned on and the switch tube Q2 to be turned off when there is an input voltage at the main power interface and the input voltage meets the requirement, and to control the switch tube Q1 to be turned off and the switch tube Q2 to be turned on when there is no input voltage at the main power interface or the input voltage does not meet the requirement; The dual power switching circuit further includes a switch tube Q3, the detection switching module is connected to the gate of the switch tube Q3, the secondary power interface is connected to the source of the switch tube Q3, the drain of the switch tube Q3 is connected to the drain of the switch tube Q2, and the source of the switch tube Q2 is connected to the load interface; The detection switching module is configured to control the switch tube Q1 to be turned on when there is an input voltage at the main power interface and the input voltage meets the requirement, and to control the switch tube Q2 and the switch tube Q3 to be turned off at the same time; when there is no input voltage at the main power interface or the input voltage does not meet the requirement, control the switch tube Q1 to be turned off, and to control the switch tube Q2 and the switch tube Q3 to be turned on at the same time; The detection switching module includes transistor A1, transistor A2, transistor A3, transistor A4, transistor A5, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, resistor R11, resistor R12, resistor R13 and resistor R14, the main power interface and the auxiliary power interface are both configured with a first power end and a second power end, and the load interface is configured with a first load end and a second load end; The second power supply end of the main power supply interface, the second power supply end of the auxiliary power supply interface and the second load end of the load interface are connected together, the two ends of the resistor R1 are connected to the first power supply end and the second power supply end of the main power supply interface in a one-to-one correspondence, the first power supply end of the main power supply interface is respectively connected to one end of the resistor R2 and the drain of the switch tube Q1, the other end of the resistor R2 is respectively connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R3 is respectively connected to the second power supply end of the main power supply interface and the drain of the switch tube Q1 The emitter of the transistor A1 is connected to the emitter of the transistor A1, the other end of the resistor R4 is connected to the base of the transistor A1, the collector of the transistor A1 is respectively connected to one end of the resistor R5, one end of the resistor R6 and one end of the resistor R7, the other end of the resistor R5 is connected to the gate of the switch tube Q1, the source of the switch tube Q1 is connected to the first load end of the load interface, the other end of the resistor R6 is connected to the base of the transistor A3, the other end of the resistor R7 is respectively connected to the first power supply end of the auxiliary power supply interface, the source of the switch tube Q3 , one end of the resistor R8 is connected to one end of the resistor R9, the other end of the resistor R8 is connected to the emitter of the transistor A3, the collector of the transistor A3 is respectively connected to the base of the transistor A4, the base of the transistor A5 and one end of the resistor R11, the other end of the resistor R11 is connected to one end of the resistor R12, one end of the resistor R13, one end of the resistor R14 and the second power supply end of the main power supply interface, the other end of the resistor R12 is respectively connected to one end of the resistor R10 and the transistor The base of the transistor A2 is connected to the base of the transistor A2, the other end of the resistor R10 is connected to the first power supply end of the main power supply interface, the other end of the resistor R9 is connected to the collector of the transistor A4, the emitter of the transistor A4 is respectively connected to the emitter of the transistor A5 and the gate of the switch tube Q3, the other end of the resistor R13 is connected to the collector of the transistor A5, the other end of the resistor R14 is respectively connected to the emitter of the transistor A2 and the gate of the switch tube Q2, and the collector of the transistor A2 is connected to the source of the switch tube Q1; The dual power switching circuit further includes a capacitor C1 , and two ends of the capacitor C1 are connected to a first load end and a second load end of the load interface in a one-to-one correspondence.

2. A fill light, characterized in that: It comprises a light source module and the dual power switching circuit as claimed in claim 1, wherein two ends of the light source module are connected to a first load end and a second load end of the load interface in a one-to-one correspondence.

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