LED light bar and light box

Abstract

The utility model provides an LED (light-emitting diode) light bar, which is characterized in that a connector male head and a connector female seat are arranged on the opposite sides of two adjacent LED light bar bodies, so that the two adjacent LED light bar bodies are connected in parallel through the connector male head and the connector female seat; the LED light bar body is fixed on the heat dissipation section bar through heat conduction silica gel; one end of the LED light bar is connected with the joint through a connecting wire; the connectors are used for connection between the LED lamp strips and connection between the LED lamp strips and the driving power source. The AC input end of the driving power supply is connected with the commercial power, and the DC output end of the driving power supply supplies power to the MCU U2 after voltage reduction through the LDO circuit. The touch chip circuit is used for sending an instruction to the MCU U2; the MCU U2 independently controls the on and off of each LED light bar body through an MOS (Metal Oxide Semiconductor) tube; and after the output voltage of the MCU U2 is amplified, the dimming port of the driving power supply is controlled to output 0-10V voltage.

Description

Technical Field

[0001] The utility model relates to a light emitting device, in particular to an LED light bar. Background Art

[0002] LED light strips must have a heat dissipation structure so that the junction temperature of the LED (LED contains a semiconductor PN junction, and the junction temperature here refers to the temperature of the semiconductor PN junction in the LED) can be controlled within a lower temperature range.

[0003] The lifespan of an LED is exponentially related to its junction temperature during operation: Log(t) = A / T (t is the lifespan; A is a constant related to the activation energy of the LED chip material; T is the junction temperature, expressed in absolute degrees).

[0004] For white LED chips, a typical lifetime of up to 50,000 hours is achieved if the junction temperature is kept below 70°C; if the junction temperature is kept below 50°C, the lifetime can reach 100,000 hours. Lowering the junction temperature requires reducing the thermal resistance between the LED's PN junction and the ambient air. This includes the thermal resistance between the LED's PN junction and the LED bracket's solder joint, the thermal resistance between the LED bracket's solder joint and the aluminum housing, and the thermal resistance between the aluminum housing and the air. Utility Model Content

[0005] The main technical problem to be solved by the utility model is to provide an LED light bar, which has good heat dissipation and is not easy to fall off, and has a fast installation speed, saving time and labor.

[0006] In order to solve the above technical problems, the present invention provides an LED light bar, comprising: at least two LED light bar bodies connected in parallel, and a heat dissipation profile;

[0007] Two adjacent LED light bar bodies are provided with a male connector and a female connector on the opposite side, so as to connect the two adjacent LED light bar bodies in parallel through the male connector and the female connector;

[0008] The LED light bar body is fixed on the heat dissipation profile by heat-conducting silicone; one end of the LED light bar is connected to the connector by a connecting wire; the connector is used to connect between LED light bars and between LED light bars and a driving power supply;

[0009] The AC input end of the driving power supply is connected to the mains, and the DC output end is stepped down by the LDO circuit to supply power to the MCUU2;

[0010] It also includes a touch chip circuit for sending instructions to the MCU U2; the MCU U2 controls the lighting of each LED light strip body separately through the MOS tube; and the output voltage of the MCU U2 is amplified and then controls the dimming port of the driving power supply to output a 0-10V voltage to change the brightness of the LED light strip body.

[0011] In a preferred embodiment: the LDO circuit includes an MCU U3, whose VI N terminal is connected to the 12V DC output terminal of the driving power supply, and capacitors C10 and C11 connected in parallel are set between the 12V DC output terminal and GND; the VOUT of MCU U3 outputs a 3.3V voltage to power MCU U2.

[0012] In a preferred embodiment: a glue overflow groove is provided on the heat dissipation profile.

[0013] In a preferred embodiment: the positive electrode of the connector is connected to the DC positive output terminal of the driving power supply, the negative electrode is connected to GND through a MOS tube, and the control electrode of the MOS tube is connected to the control signal output terminal of MUC U2.

[0014] The utility model also provides an LED light box, which is equipped with the LED light strip described above.

[0015] Compared with the existing technology, the utility model provides an LED light strip, in which the ends of the LED light strip bodies that are close to each other are respectively provided with a male connector and a female connector; the two LED light strip bodies are quickly connected in parallel through the connector; the connected LED light strip bodies are inserted into the heat dissipation profile; the LED light strip body and the heat dissipation profile are fixed by thermally conductive silicone, so that the product has good heat dissipation and is not easy to fall off, and the installation speed is fast, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of an LED light bar in a preferred embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of a driving power supply in a preferred embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of an LDO circuit in a preferred embodiment of the present utility model;

[0019] Figure 4 This is a circuit diagram of a touch chip in a preferred embodiment of the present utility model;

[0020] Figure 5 This is a circuit diagram of the MCU U2 in the preferred embodiment of the present utility model;

[0021] Figure 6This is a circuit diagram of a MOS tube in a preferred embodiment of the present utility model;

[0022] Figure 7 This is a dimming circuit diagram in a preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] refer to Figure 1-Figure 7 , this embodiment provides an LED light bar, comprising: at least two LED light bar bodies 1 connected in parallel, and a heat dissipation profile;

[0027] Two adjacent LED light bar bodies 1 are provided with a male connector and a female connector on the opposite sides, so as to connect the two adjacent LED light bar bodies 1 in parallel through the male connector and the female connector;

[0028] The LED light bar body 1 is fixed to the heat dissipation profile by means of thermally conductive silicone, and the heat dissipation profile is provided with a glue overflow groove; when the LED light bar body 1 is inserted into the heat dissipation profile, excess thermally conductive silicone flows into the glue overflow groove, thereby solving the problem of glue overflow caused by excessive glue during the gluing process; one end of the LED light bar is connected to a connector via a connecting wire; the connector is used to connect between LED light bars and between the LED light bar and the driving power supply;

[0029] The AC input of the driver power supply is connected to the mains, and the DC output is stepped down by an LDO circuit to power MCU U2. The LDO circuit is used to step down 12V DC power to output 3.3V DC power. The LDO circuit includes MCU U3, whose V1 and N terminals are connected to the 12V DC output of the driver power supply. Capacitors C10 and C11 are connected in parallel between the 12V DC output and GND. MCU U3's VOUT output is a 3.3V voltage that powers MCU U2.

[0030] The system also includes a touch chip circuit for sending instructions to the MCU U2. The MCU U2 controls the lighting of each LED light strip 1 individually through MOS transistors. The MCU U2 outputs amplified voltage, which controls the dimming port of the driver power supply to output a 0-10V voltage to change the brightness of the LED light strip 1. By touching the touch chip circuit, the user can send instructions to the MCU U2, which then controls the lighting of different LED light strips 1 according to the received instructions.

[0031] To achieve MOS-controlled on / off control of the LED light strip 1, the positive terminal of the connector is connected to the DC positive output terminal of the driver power supply, and the negative terminal is connected to GND through a MOS transistor. The control terminal of the MOS transistor is connected to the control signal output terminal of the MCU U2. When the control signal output terminal of the MCU U2 outputs a high level, the MOS transistor turns on, connecting the negative terminal of the connector to GND, and the circuit of the LED light strip 1 is turned on.

[0032] This embodiment also provides an LED light box equipped with the LED light strip described above.

[0033] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any technical equivalent transformation made using the contents of the present invention specification falls within the protection scope of the present invention.

Claims

1. An LED light strip, characterized in that include: At least two LED light strip bodies and heat dissipation profiles connected in parallel; Two adjacent LED light bar bodies are provided with a male connector and a female connector on the opposite side, so as to connect the two adjacent LED light bar bodies in parallel through the male connector and the female connector; The LED light bar body is fixed on the heat dissipation profile by heat-conducting silicone; one end of the LED light bar is connected to the connector by a connecting wire; the connector is used to connect between LED light bars and between LED light bars and a driving power supply; The AC input terminal of the driving power supply is connected to the mains, and the DC output terminal is stepped down by the LDO circuit to supply power to the MCU U2; It also includes a touch chip circuit for sending instructions to the MCU U2; the MCU U2 controls the lighting of each LED light strip body separately through the MOS tube; and the output voltage of the MCU U2 is amplified and then controls the dimming port of the driving power supply to output a 0-10V voltage to change the brightness of the LED light strip body.

2. The LED light strip according to claim 1, characterized in that: The LDO circuit includes an MCU U3, whose VIN terminal is connected to the 12V DC output terminal of the driving power supply, and capacitors C10 and C11 connected in parallel are set between the 12V DC output terminal and GND; the VOUT of the MCU U3 outputs a 3.3V voltage to power the MCU U2.

3. The LED light strip according to claim 1, characterized in that: The heat dissipation profile is provided with a glue overflow groove.

4. The LED light strip according to claim 1, characterized in that: The positive electrode of the connector is connected to the DC positive output terminal of the driving power supply, and the negative electrode is connected to GND through a MOS tube. The control electrode of the MOS tube is connected to the control signal output terminal of MUC U2.

5. An LED light box, characterized in that The LED light strip according to any one of claims 1 to 4 is assembled.

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