Working method of table lamp capable of automatically adjusting brightness

A technology of automatic adjustment and working method, which is applied to the components of lighting devices, semiconductor devices of light-emitting elements, lighting and heating equipment, etc., can solve the problem that the light intensity of the table lamp cannot be adjusted, and achieve vision protection, simple circuit structure, The effect of saving components

Active Publication Date: 2016-03-23
新沂市棋盘工业集中区建设发展有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention intends to provide a working method for automatically adjusting the brightness of

Method used

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  • Working method of table lamp capable of automatically adjusting brightness
  • Working method of table lamp capable of automatically adjusting brightness

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Embodiment Construction

[0016] The present invention will be described in further detail below by means of specific embodiments:

[0017] The reference signs in the drawings of the specification include: inner cover 1, outer cover 2, lamp tube 3, lamp holder 4, switch S, relay J, first resistor R1, first LED lamp VL1, photosensitive resistor RG, adjustable resistor RP , the first transistor VT1, the second resistor R2, the third resistor R3, the second LED lamp VL2, the second transistor VT2, the fourth resistor R4, the third LED lamp VL3, and the third transistor VT3.

[0018] as attached figure 1 As shown in the desk lamp with automatic illuminance adjustment, the lampshade includes an inner cover 1 and an outer cover 2, both of which are flaring downwards, and both of the inner cover 1 and the outer cover 2 have downward openings. The outer surface of the inner cover 1 is provided with three protrusions along the circumference of the inner cover 1, and three retractable pull rods are evenly distr...

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Abstract

The invention discloses a working method of a table lamp capable of automatically adjusting brightness so as to solve the problem that an existing table lamp cannot adjust the brightness according to light intensity. The working method of the table lamp capable of automatically adjusting brightness includes the following steps that (1) when the light intensity of the environment meets the requirement of normal reading and writing, a first LED lamp and a third LED lamp are turned on, a second LED lamp is turned off, the brightness of the third LED lamp is lower than that of the second LED lamp, an outer cover located outside the first LED lamp, the second LED lamp and the third LED lamp is put down, and the height of the lower end face of the outer cover is smaller than that of the lower end face of an inner cover on the inner side of the outer cover; and (2) when the environment light is dim, the first LED lamp and the second LED lamp are turned on, the third LED lamp is turned off, the outer cover located outside the first LED lamp, the second LED lamp and the third LED lamp is upwards folded along the outer surface of the inner cover, and a bent ring which is inwards bent and arranged on the lower end face of the outer cover abuts against the lower end face of the inner cover on the inner side of the outer cover.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to a working method for automatically adjusting the brightness of a desk lamp. Background technique [0002] LED, also known as light-emitting diode, is a solid-state semiconductor device that can convert electrical energy into visible light. With the advancement of technology and the continuous improvement of people's living standards, LED lights have been widely used in our daily lives. It has changed the traditional lighting method to a great extent. LED lights have the advantages of good heat dissipation, long service life and energy saving. However, with the improvement of people's quality of life, people also put forward higher requirements for lighting functions. The disadvantages are: 1. The illuminance cannot be adjusted according to the intensity of the ambient light, so the protection effect on people's eyesight is poor; 2. The lamp cap of the LED lamp is usually directly ...

Claims

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Application Information

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IPC IPC(8): F21S6/00F21V23/04F21V14/00H05B33/08F21Y115/10H05B44/00
CPCF21S6/002F21V14/00F21V23/0464H05B45/20H05B45/44H05B45/10
Inventor 鲁永忠
Owner 新沂市棋盘工业集中区建设发展有限公司
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