Double-lamp-group zooming circuit and head lamp
A lamp group and circuit technology, applied in the field of lighting, can solve the problems of reduced reliability and stability, difficult waterproof requirements, etc., and achieve the effect of maintaining stable concentration
Active Publication Date: 2018-11-09
珠海惠尔益电子科技有限公司
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Problems solved by technology
[0003] Most of the existing headlights use mechanical modules to change the distance between the lamp beads and the focusing mirror to adjust the concentration of the headlights. This adjustment method depends on the mutual matching between multiple structural parts, related mechanical tolerances and products. There are certain defects in the service life of the machine. After long-term use, its reliability and stability will be reduced due to the wear of the mechanical structural parts.
Moreover, due to the relative movement of the lamp beads and the focusing mirror, it is not easy to meet the relevant waterproof requirements
Method used
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[0025] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be noted that the "connection", "connection" and "connection" mentioned in the present invention can be direct connection or indirect connection, for the connection between ports, pins and components, ports, pins and components Devices can be connected directly to each other, or indirectly through intermediate ports, pins, or components.
[0026] The present invention provides a double lamp group zoom circuit, such as figure 1 As shown, it includes a power supply circuit, a control circuit 1, a first drive circuit 41, a spotlight 51, a second drive circuit 42, an astigmatism light 52 and a first sampling circuit 31, the control circuit 1, the first drive circuit 41 and the spotlight 51 are connected in sequence, and the control circuit 1, the second driving circuit 42 and the astigmatism lamp 52 are connected in sequence....
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The invention provides a double-lamp-group zooming circuit, which comprises a power supply circuit, a control circuit, a first driving circuit, a light gathering lamp, a second driving circuit, a floodlight and a first sampling circuit, wherein the control circuit, the first driving circuit and the light gathering lamp are sequentially connected; the control circuit, the second driving circuit andthe floodlight are sequentially connected; the power supply circuit supplies electricity to the control circuit, the first driving circuit and the second driving circuit; the input end of the first sampling circuit is connected with the power supply circuit; the output end of the first sampling circuit is connected with the control circuit; the first sampling circuit comprises a potentiometer; when the output end voltage of the first sampling circuit changes in one state from a low value or a high value or from the high value to the low value, the control circuit is used for controlling the output voltage of the first driving circuit to increase, and controlling the output voltage of the second driving circuit to decrease; when the output end voltage of the first sampling circuit changesin the other state, the control circuit controls the output voltage of the first driving circuit to decrease, and controls the output voltage of the second driving circuit to increase. The light gathering degree regulating mode is more stable and reliable.
Description
technical field [0001] The invention relates to the technical field of lighting, in particular to a double-lamp group zoom circuit and a headlamp. Background technique [0002] During the use of traditional headlights, it is necessary to adjust its concentration to adapt to different illumination distances. When the irradiation distance is longer, the concentration of light needs to be higher, which strengthens its irradiation distance. When irradiating a short distance, Then choose an irradiation method with higher astigmatism to expand the irradiation area. [0003] Most of the existing headlights use mechanical modules to change the distance between the lamp beads and the focusing mirror to adjust the concentration of the headlights. This adjustment method depends on the mutual matching between multiple structural parts, related mechanical tolerances and products. There are certain defects in the service life of the machine, and its reliability and stability will be redu...
Claims
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IPC IPC(8): H05B37/02F21V23/00F21V23/02
CPCF21V23/003F21V23/02H05B47/10
Inventor 黄伟
Owner 珠海惠尔益电子科技有限公司