CN2702575Y

CN2702575Y - Lighting lamp

Info

Publication number: CN2702575Y
Application number: CN 200320117857
Authority: CN
Inventors: 刘伟亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-10
Filing date: 2003-11-10
Publication date: 2005-05-25
Anticipated expiration: 2013-11-10

Abstract

The utility model discloses a lighting lamp whose white led is lighted by a common battery. One end of the lighting lamp is provided with the white led as light source, and the other end is provided with a metal round pipe connected with the cathode of the power source and a round metal plate whose end face is connected with the anode of the power source. The metal pipe is provided with a dc boosting conversion circuit and is embedded with insulation sealing material, and the circuit, the electric poles and the luminous tube are a whole. Two pieces of fan shape symmetrical mounting jigs are arranged between the white luminous pipe and the metal pipe. Efficient dc boosting conversion circuit produces pulse current to drive the white led. One No. 5 alkaline battery can make the lighting lamp worked for 10 hours. When the battery voltage is lower than 0. 8V, the lighting lamp can still work normally. The utility model is adaptive to produce minisize illuminating lamps as lighting means for outgoing tourism, field work, reading and learning at night and emergency lighting.

Description

Illuminating lamp

Technical field the utility model relates to a kind of illuminating lamp by 0.8～3V DC power supply, particularly relates to a kind of by the micro lighting lamp of high brightness white light-emitting diode as light source.

The background technology high brightness (2200～5400mcd) white light-emitting diode oneself power consumption very low (about 65mw), be well suited for some away from civil power again too the occasion of high light line do the usefulness of illumination.Because the white light-emitting diode operating voltage is between 3～4.5V, recommended current is 15～20mA, and (1.5 * 2V) directly light, and must adopt the DC boosting translation circuit that voltage is risen to more than the 3V so can not save common batteries with two.(0.8～1.5V) conversion efficiency is very low, volume is unfavorable for microminiaturization again in low-voltage for the conventional DC boost conversion circuit, adopt that application-specific integrated circuit (ASIC) is too high because of cost again efficiently, the difficulty of drawing materials, only be fit to the supporting use of some high-grade electronic products, so just largely limited the development and use of white light-emitting diode as lighting.

The summary of the invention the purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, easy to use, adopt common components to make and be beneficial to microminiaturization, can be under 0.8～3V voltage the high efficiency illuminating of reliable ignition white light-emitting diode, whole DC boosting translation circuit is potted in the metal circular tube of internal diameter 7mm, long 8mm with the insulated enclosure material.The fan-shaped installing rack that two symmetries are arranged between white light-emitting diode and metal circular tube is convenient to the installing/dismounting of illuminating lamp, and the small electric bulb of shape and common flashlight is size generally.

The technical scheme that its technical problem that solves the utility model adopts: with the load of an energy storage inductor L as loop oscillator, after the energized, loop oscillator begins starting of oscillation, at Q2 between the off period, electric energy coupling capacitor C 3 chargings (rather than directly rectifying and wave-filtering is powered to white light-emitting diode) are given in the electric energy stack back that the voltage of power supply E and energy storage inductor L are stored up, switching tube Q2 conduction period, switching tube Q2, electric energy coupling capacitor C 3 and white light-emitting diode LED form a loop, electric energy coupling electric capacity discharges to white light-emitting diode LED, white light-emitting diode LED is lighted luminous, while power supply E, energy storage inductor L and switching tube Q2 form another loop, energy storage inductor L is recharged storage of electrical energy, thereby circuit is reciprocal, white light-emitting diode is lighted luminous by a series of pulse voltage, because the frequency of pulse voltage does not have flickering so white light-emitting diode is seen more than hundreds of Hz; Q2 gives capacitor C 3 charging electric energy supplement by back power supply E with the voltage stack of energy storage inductor L simultaneously, make capacitor C 3 have enough electric energy to light white light-emitting diode at interdischarge interval, the value of energy storage inductor L is bigger, it also plays the ballast effect, makes the electric current that flows through white light-emitting diode be no more than setting.

Description of drawings is further described the utility model is short below in conjunction with drawings and Examples.

Fig. 1 is the embodiment schematic diagram.

Fig. 2 is a line map of the present utility model.

The white light-emitting diode of 1. high brightness among the figure is 2. justified metal tube, 3. symmetrical fan-shaped installing rack, 4. circle metal plate, 5. insulated enclosure material.

The described loop oscillator of embodiment Fig. 2 comprises: resistance R, triode Q1, Q2 and capacitor C 2.Energy storage inductor L is the load of oscillation switch pipe Q2, C1 is the power supply input filter capacitor, the value of C1 is 0.1 μ F, C2 is an oscillating capacitance, it is 470P that oscillating capacitance C2 is got in this enforcement, resistance R is 27K, the Q1 PNP triode of 2SC9012, the oscillation switch efferent duct Q2 NPN triode of 2SC8050, C3 is an electric energy coupling electric capacity, when switching tube Q2 ends the electrical power storage of power supply E and energy storage inductor L stack is got up, D is a Schottky diode, and it provides the charging path for electric energy coupling capacitor C 3, coupling electric energy electric capacity can be with tantalum electric capacity ESR value 0.15 Ω～0.3 Ω of 1～10 μ F, and present embodiment is got the tantalum electric capacity of 1 μ F.D E10QS03 Xiao Te utmost point diode, LED is a white light-emitting diode, forms discharge loops with electric energy coupling capacitor C 3 therebetween in switching tube Q2 conducting, white light-emitting diode LED forward voltage drop is that 3V, electric current 18mA, luminous intensity are 4800mcd.Energy storage inductor L has the ballast effect concurrently, and its value (100 μ H～2.2mH), the present embodiment chip inductor of 1mH, 500mA.Present embodiment is when the input voltage of 1.5V, the circuit total current is 35mA, with No. 7 alkaline battery continuous operations of a joint 10 hours, when voltage hangs down to 0.8V, still have the electric current of 3mA to cross white light-emitting diode LED, in the accompanying drawing 1, the inwall of metal circular tube and the common port of circuit () be connected as the negative pole of input power supply, simultaneously the boost conversion circuit in its pipe is played shielding action, in order to avoid generation radiated interference, the lamp holder metal circular tube also can be made into the installation that the gong line is convenient to alternate manner, the front end of lamp holder metal circular tube is installed white light-emitting diode, the other end is installed with it, and isolated insulation connects the anodal circle metal plate of power supply input, the fan-shaped installing rack that has two symmetries to install between the front end of lamp holder metal circular tube and the light-emitting diode is used for illuminating lamp and installs.It is little to have reached volume like this, simple and compact for structure, high-effect, easy to make, cheap purpose.

Claims

1. illuminating lamp, comprise that an end is as the light-emitting diode of light source, the fan-shaped installing rack of two symmetries, the metal circular tube of another termination dc power cathode and end face connect the circle metal plate of dc power anode, it is characterized in that: the DC boosting translation circuit and the insulated enclosure packing material of the built-in use 0.8～3V of described metal circular tube DC power supply.

2. illuminating lamp according to claim 1 is characterized in that: described metal circular tube inwall is connected with the common port of circuit, and described circle metal plate is connected with the power input positive pole of circuit.

3. illuminating lamp according to claim 1 is characterized in that: described DC boosting translation circuit is potted in the described metal circular tube with insulating material, and described circle metal plate is fixed on the centre of described round metal tube end face with insulating material.

4. illuminating lamp according to claim 1, it is characterized in that: described DC boosting translation circuit comprises that an emitter is connected on the wherein PNP triode Q1 of an end of power supply E anode and energy storage inductor L, a resistance R that is connected to PNP triode Q1 base stage and power supply common port, a collector electrode connects energy storage inductor L one end, base stage connects PNP triode Q1 collector electrode, emitter meets the NPN triode Q2 of power supply common port, an oscillating capacitance C2 who connects PNP triode Q1 base stage and NPN triode Q2 collector electrode, above-mentioned NPN triode Q2, PNP triode Q1, resistance R, oscillating capacitance C2 and energy storage inductor L constitute loop oscillator jointly, an electric energy coupling capacitor C 3 that is connected on a NPN triode Q2 collector electrode and a Schottky rectifier diode D negative electrode, the anode of Schottky rectifier diode D connects the common port of power supply, a white light-emitting diode LED who is connected in reverse parallel in Schottky diode D two ends, after the loop oscillator work, during NPN triode Q2 conducting, electric energy coupling capacitor C 3, NPN triode Q2, white light-emitting diode LED constitutes discharge loop, white light-emitting diode is lighted luminous, while power supply E, energy storage inductor L, NPN triode Q2 constitutes charge circuit, energy storage inductor charging storage power, when NPN triode Q2 ended, the stack of the voltage of the electric energy of energy storage inductor L and power supply E was after Schottky diode D gives electric energy coupling capacitor C 3 chargings.