A study desk lamp for assisting drawing
A table lamp and lampshade technology, which is applied to the parts of lighting devices, semiconductor devices of light-emitting elements, lighting and heating equipment, etc., can solve the problem of using large drawing tools, achieve accurate drawing, clear graphic display, and improve practicability Effect
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Embodiment 1
[0030] combine Figure 1 to Figure 3 As shown, a learning desk lamp for assisting in drawing, including a lamp holder 1, a lamp post 2 and a lampshade 3, a circle of grooves 4 (or a circle of protrusions, or other connecting structures) are formed along the outer surface of the lampshade 3, and the concave The bottom of the groove 4 is provided with a light-transmitting port 5, and a movable ring 6 is set on the groove 4. The movable ring 6 is provided with different light-transmitting geometric figures or lines 7, including triangles, quadrilaterals, circles, and ellipses. , pentagon, hexagon, etc., the lampshade 3 is provided with a light bulb 8, and an assembly for installing the light bulb 8 and driving the light bulb 8 to move up and down.
[0031] Wherein, the assembly includes a driving gear 9, a driven gear 10, a guide rail 11, a moving seat 12 and a tooth plate 13; The bulb 8 is installed on the front end side of the front end, the tooth plate 13 is connected to the ...
Embodiment 2
[0039] combine Figure 5 As shown, the structure of embodiment 2 is basically the same as that of embodiment 1, the only difference is that the assembly includes a slide bar 17, a moving seat 18, a bar magnet 19, an electromagnetic coil 20 and an adjustment knob 21; the slide bar 17 is vertically The erection is installed in the lampshade 3, the moving seat 18 is movably sleeved on the slide bar 17, the bulb 8 is installed on the front side of the moving seat 18, the bar magnet 19 is vertically connected to the rear end side of the moving seat 18, and the electromagnetic solenoid 20 is located directly below the bar magnet 19, and the electromagnetic solenoid 20 is connected with a power supply, and the adjusting knob 21 is arranged on the lamp holder 1 for adjusting the current size of the power supply connected to the electromagnetic solenoid 20.
[0040]After the electromagnetic coil 20 is energized, it produces a magnetic field similar to a bar magnet, and the direction of...
Embodiment 3
[0042] combine Image 6 As shown, the structure of embodiment 3 is basically the same as that of embodiment 1, the only difference is: the assembly includes a slide bar 22, a screw mandrel 23, a moving seat 24 and an adjustment knob 25; the slide bar 22 and the screw mandrel 23 are erected vertically side by side In the lampshade 3, the bulb 8 is installed on the front end side of the moving seat 24, and a threaded hole and a cylindrical hole are vertically opened on the moving seat 24, the slide bar 22 passes through the cylindrical hole, and the screw mandrel 23 passes through the threaded hole and forms Threaded connection, the top of the screw mandrel 23 passes through the lampshade 3, and the adjusting knob 25 is connected to the top of the screw mandrel.
[0043] When the height of the bulb 8 needs to be adjusted, the adjustment knob 25 only needs to be rotated to allow the screw mandrel 23 to rotate, so that the moving seat 24 and the bulb 8 can move up and down along t...
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