An adjustable power supply cabinet lamp

An adjustable and power supply technology, applied in the field of counter lamps, can solve the problems of hot counter lamps, low conversion efficiency, and uneven brightness of constant current source counter lamps, and achieve the effect of solving inconsistent brightness and consistent power
CN110177416BActive Publication Date: 2020-11-06合肥畅想照明科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
合肥畅想照明科技有限公司
Publication Date
2020-11-06

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Abstract

The invention discloses an adjustable power supply counter lamp, which comprises a shell, and the inside of the shell is provided with a light bar and an adjustable power supply, the light bar is set by a constant current light bar, and the adjustable power supply The adjustable power supply includes a rectifier circuit, a drive circuit and a main control circuit. The drive circuit is composed of a pulse width modulation circuit and a rectifier filter circuit. It consists of a power supply circuit and an output power regulation circuit. The present invention replaces the constant voltage source with the constant current source and the adjustable constant current power source instead of the constant voltage power source. Effectively, under the same power, the heat generated by the constant current source is 1 / 9 of the constant voltage source, effectively solving the problem of low conversion efficiency and counter lamps. Overheating problem, and according to different lengths of counter lamps, adjust the constant current source power supply current to achieve consistent power per unit length of counter lamps, effectively solving the problem of inconsistent brightness of constant current source counter lamps.
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Description

technical field

[0001] The invention relates to the technical field of counter lamps, in particular to an adjustable power supply counter lamp. Background technique

[0002] The LED counter lamp uses LED as the light source, and the lamps installed in the cabinet of the jewelry showcase are called LED counter lamps. Its installation and irradiation effects are different, and can be divided into LED counter light strips and LED counter pole spotlights. The light of the LED counter lamp is very penetrating and has a strong sense of three-dimensionality. It can project close-range point light sources on jewelry, improve the grade of jewelry, and greatly display the value of jewelry.

[0003] Most of the existing counter lamps use constant voltage light strips and power supplies together. The constant voltage power supply voltage is consistent and will not change, generally 12V. The counter light strips have a current-limiting resistor. According to different cutting lengths, t...

Claims

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