CN2849446Y

CN2849446Y - Slowly-bright adjustable durable desk lamp

Info

Publication number: CN2849446Y
Application number: CNU2005200325724U
Authority: CN
Inventors: 杨云芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-09
Filing date: 2005-11-09
Publication date: 2006-12-20
Anticipated expiration: 2015-11-09

Abstract

The utility model relates to a novel slowly-bright adjustable durable desk lamp which can effectively solve the problems that the service life of an existing desk lamp is short, the existing desk lamp is unsafe and the brightness can not be adjusted. The utility model has the technical scheme that a lamp bulb is arranged in a lamp holder on a lamp base; the lamp bulb is positioned in a lamp shade on the lamp base; a power switch and a knob for adjusting brightness are arranged on a front desk top of a desk base; the lateral surface is provided with a current leading wire; a slowly-bright adjustable durable circuit is arranged in the desk base, wherein the circuit is composed of a resistor, a capacitor, a diode, a controlled silicon and an adjustable resistor; the input end of the circuit is connected with a power supply, and the output end is connected with a wire connection end of the lamp bulb. The utility model has the advantages of novel and unique structure, convenient and safe usage, energy saving and long service life. The utility model is good for protecting eyesight.

Description

The slow bright adjustable desk lamp of lengthening the life

One, technical field

The utility model relates to a kind of illumination with the slow bright adjustable desk lamp of lengthening the life.

Two, background technology

Desk lamp is the staple of work and study illumination; and mostly the desk lamp that uses at present is by lamp holder; bulb or fluorescent tube and pedestal constitute; direct insertion of bulb or fluorescent tube or extension or spinning are on body; during the desk lamp of this structure uses; the moment of turning on light because the AC power of 220V is directly to be added on the cold conditions filament; thereby when voltage instability or filament cold conditions; immediate current increases suddenly or changes; bulb or fluorescent tube are easy to be burnt out, and disconnect as filament, even explosion; this not only influences desk lamp service life; but also very dangerous, promptly be under good state, because intensity of light is non-adjustable; can cause energy waste first; second also be unfavorable for sight protectio, therefore, the use of existing desk lamp is also unsatisfactory.

Three, utility model content

Actual needs at above-mentioned situation and work and study and life; the purpose of the utility model just provides a kind of new slow bright adjustable desk lamp of lengthening the life; it is short service life effectively to solve desk lamp; the uncontrollable problem of dangerous and brightness; the technical scheme of its solution is in the socket on the lamp socket bulb to be housed; bulb places in the lampshade on the pedestal; on the table top power switch and brightness regulation knob are arranged before the pedestal; there is current feed the side; the slow bright adjustable circuit of lengthening the life is housed in the pedestal; its circuit is by resistance; electric capacity; diode; controllable silicon and adjustable resistance constitute; the input termination power of circuit, on the output termination bulb terminals, its novel structure uniqueness; easy to use; safety; energy-conservation; life-span is long; and be beneficial to sight protectio, and easily to produce and popularization and application, economic and social benefit is remarkable.

Four, description of drawings

Fig. 1 is a structural front view of the present utility model.

Fig. 2 is a circuit diagram of the present utility model.

Five, the specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.

Provide by Fig. 1, Fig. 2, the utility model is, in the socket 4 on the pedestal 1 bulb 3 is housed, bulb 3 places lampshade 2 inner faces on the pedestal 1, power switch 5 and adjustable brightness joint knob 6 are arranged on the table top before the pedestal 1, and there is attaching plug lead-in wire 7 pedestal 1 side, and the slow bright adjustable circuit of lengthening the life is housed in the pedestal 1, the input termination power of circuit, the terminals of its output termination bulb 3; The slow bright adjustable circuit of lengthening the life in the said pedestal 1 is to be made of resistance R 1, R2, R3, adjustable resistance R4, capacitor C, diode D and controllable silicon KG, the alternating current 220V power supply meets diode D positive pole and bulb J through input end switch K, resistance R 1, R2, R3 one end and electrochemical capacitor C anode join, resistance R 1 other end and the parallel connection of electrochemical capacitor negative terminal connect the controllable silicon KG control utmost point and current and power supply ground terminal through adjustable resistance R4, the negative pole of resistance R 2 another terminating diode D, resistance R 3 another termination controllable silicon KG control the utmost point, and controllable silicon KG positive pole meets bulb J.

Said lampshade 2 is hemispherical reflecting type cover body, and to make full use of light source, saves energy in case of necessity, also can adopt the vertical rod formula, and illuminating lamp (bulb or fluorescent tube) is contained in the vertical rod and is equipped with corresponding cover body.

In circuit, diode D provides halfwave rectifier for capacitor C, resistance R 2 is a current-limiting resistance, resistance R 3 is the control electrode resistance of bidirectional triode thyristor KG, capacitor C provides conducting voltage for controllable silicon KG, and resistance R 1 is slow bright time controlling resistance, and adjustable resistance R4 is a brightness regulation resistance, be the adjustment knobs 6 among Fig. 1, power switch K is the power switch 5 among Fig. 1.

Working condition of the present utility model is; when power connection; bidirectional triode thyristor carries out copped wave control to the electric current by bulb; half-wave RC circuit is controlled bidirectional triode thyristor in addition; progressively increase its average ON time; slow bright in 1 second, make bulb reach normal brightness, effectively overcome the problem that bulb flicker or brightness reduce; prolonged bulb service life; under normal circumstances, if need light intensity (brightness) to regulate, rotatable brightness regulation knob is realized; very convenient; economize on electricity safety is beneficial to the protection to eyes again, and the wide development application market is arranged.

Claims

1, a kind of slow bright adjustable desk lamp of lengthening the life, it is characterized in that being, in the socket (4) on the pedestal (1) bulb (3) is housed, bulb (3) places lampshade (2) inner face on the pedestal (1), power switch (5) and adjustable brightness joint knob (6) is arranged on the preceding table top of pedestal (1), and there is attaching plug lead-in wire (7) pedestal (1) side, and the slow bright adjustable circuit of lengthening the life is housed in the pedestal (1), the input termination power of circuit, the terminals of its output termination bulb (3).

2, the slow bright adjustable desk lamp of lengthening the life according to claim 1, it is characterized in that, the slow bright adjustable circuit of lengthening the life in the said pedestal (1) is by resistance R 1, R2, R3, adjustable resistance R4, capacitor C, diode D and controllable silicon KG constitute, the alternating current 220V power supply meets diode D positive pole and bulb J through input end switch K, resistance R 1, R2, R3 one end and electrochemical capacitor C anode join, resistance R 1 other end and the parallel connection of electrochemical capacitor negative terminal connect the controllable silicon KG control utmost point and current and power supply ground terminal through adjustable resistance R4, the negative pole of resistance R 2 another terminating diode D, resistance R 3 another termination controllable silicon KG control the utmost point, and controllable silicon KG positive pole meets bulb J.

3, the slow bright adjustable desk lamp of lengthening the life according to claim 1 is characterized in that said lampshade (2) is hemispherical reflecting type cover body.