Brightness adjusting control device for LED shadowless lamp
A technology of LED shadowless lamp and brightness adjustment, which is applied in the direction of electrical components, etc., can solve the problems of easy loosening of cable plugs, poor stability of the surgical lamp, cumbersome production level, etc., to facilitate assembly and production, realize rational utilization, and reduce the number of Effect
Pending Publication Date: 2022-04-08
河北谊安奥美医疗设备有限公司
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the easy looseness of the cable connection between the lamp board and the driving board of the shadowless lamp in the prior art, cumbersome production, high maintenance difficulty, poor stability of the operating lamp and one driving board can only control one group of LED lights In order to provide a LED shadowless lamp brightness adjustment control device, it adopts the lamination scheme of connector connection between the driver board group and the lamp board and the separation of the driver board group and the main control board.
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Embodiment 1
[0059] Such as Figure 1-3 As shown, the drive board includes: a drive board main body 2 and a drive board main control chip 1 arranged on the drive board main body 2, several drive circuits and a power supply communication interface group 5; the drive board and the lamp board 6 are correct After docking, the brightness control of multiple groups of LED lamp beads on the lamp board is controlled by the driving circuit and the main control chip on the driver board. Since multiple driver boards control multiple lamp boards, the brightness of the lamp beads is synchronized; each The driver board has a socket 5, which is used for plugging in cables to receive power and communicate with the main control board; each driver board is independent, and if one of them fails, the control of other driver boards will not be affected by the faulty board .
[0060] The present invention adopts the method that the driving board and the main control board are separated, and each driving board ...
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The invention relates to the field of shadowless lamps, in particular to a brightness adjusting control device for an LED shadowless lamp. In the brightness control device provided by the invention, a driving unit comprises a plurality of driving board groups which are connected in parallel and are connected in series with a main control board; wherein each driving board group comprises a driving board main body (2), and a power supply communication interface group (5), a driving board main control chip (1) and a plurality of driving circuits which are arranged on the driving board main body (2); the driving board main control chip (1) and each driving circuit are connected with a power supply cable through a power supply communication interface group (5); the driving board main control chip (1) is connected with the main control board through the power supply communication interface group (5) by utilizing a communication cable, each driving circuit is connected with one lamp group of the lamp board main body (6) and is connected with the driving board main control chip (1), and a constant current chip of each driving circuit is controlled based on a PWM (Pulse Width Modulation) signal output by a pin of the driving board main control chip (1). And the current adjusting module is used for adjusting current input to each lamp group.
Description
technical field [0001] The invention relates to the field of shadowless lamps, in particular to a brightness control device for LED shadowless lamps. Background technique [0002] The dimming of the surgical shadowless lamp is to adjust the brightness of each lamp bead on the lamp board, which is an indispensable basic function for the surgical lamp, so it is particularly important to ensure the stability and reliability of the basic functions of the surgical lamp. [0003] In the traditional technology, the main control board with the function of driving LED is used to adjust the brightness of the shadowless lamp. Surgical lamps currently on the market generally use cables to connect the lamp board and the main control board to drive the LED lamp for brightness adjustment, which is used to save printed circuit board (PCB) boards. [0004] Patent CN204005836U proposes an electrical connection structure between the light source board and the drive board of an LED lamp. The c...
Claims
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IPC IPC(8): H05B45/10H05B45/30H05B45/325H05B45/345H05B45/50
Inventor 李晨昊
Owner 河北谊安奥美医疗设备有限公司