CN208012226U - A kind of LED illuminating lamp for refrigerator - Google Patents

Abstract

The utility model discloses a kind of LED illuminating lamp for refrigerator, the LED illumination lamp includes driving circuit, and there is the driving circuit major loop, the major loop to be equipped with PTC.Since to have the shortcomings that short life, energy consumption is high, brightness is low etc. a variety of for the incandescent lamp used in tradition machinery cold compartment of refrigerator, major producer is in the numerous and confused product for releasing the lighting device using LED light as cold compartment of refrigerator currently on the market, but its LED light illuminating effect is poor, of high cost, do not have durability simultaneously, Yi Yin be struck by lightning or rush of current and damage, cannot meet the needs of users.The utility model effectively improves the resistance to lightning stroke of LED illumination lamp, the effect of resistance to rush of current, improves the service life of LED illumination lamp, meet the needs of users by introducing PTC element in the driving circuit of LED illuminating lamp for refrigerator.

Description

A kind of LED illuminating lamp for refrigerator

Technical field

The utility model is related to a kind of LED illumination lamps, more particularly to a kind of LED illuminating lamp for refrigerator.

Background technology

The lighting device of tradition machinery cold compartment of refrigerator mostly uses incandescent lamp, but incandescent lamp has short life, energy consumption high, bright Low disadvantage is spent, due to the limitation in service life, light bulb is being needed replacing using 2-3, very burden is caused to user；And its power Between up to 10W-25W, very big waste is caused to the energy；And houselights turns to be yellow, is dark, influences illuminating effect.With technology Development, major producer is in the numerous and confused product for releasing the lighting device using LED light as cold compartment of refrigerator currently on the market, but its Illuminating effect is poor or is as star lighting, luminance shortage；It is expensive；Do not have durability, Yi Yinlei simultaneously Hit or rush of current and damage.It cannot meet the needs of users.

Utility model content

The utility model provides a kind of LED illuminating lamp for refrigerator, at least solve in the prior art LED light easily because lightning stroke Or rush of current and the problem of damage.

The utility model provides a kind of LED illuminating lamp for refrigerator, and the LED illumination lamp includes driving circuit, the drive There is dynamic circuit major loop, the major loop to be equipped with PTC.

Further, the major loop includes PTC, rectifier, step-down capacitor C1, LED lamp bead, first resistor R1, the 5th Resistance R5, the rectifier include four pins, respectively alternating current input pin, alternating current output pin, direct current electricity output Pin, DC supply input pin, the PTC, step-down capacitor C1 respectively with the alternating current input pin of rectifier, exchange electricity output Pin is connected, the direct current output pin of the rectifier successively with first resistor R1, LED lamp bead, the 5th resistance R5, rectifier DC supply input pin be connected.

Further, the driving circuit further includes second resistance R2,3rd resistor R3, the 4th resistance R4, the 6th electricity R6, electrolytic capacitor C2 are hindered, the second resistance R2 connects with 3rd resistor R3, the string of the second resistance R2 and 3rd resistor R3 Connection circuit structure is in parallel with step-down capacitor C1, and the 6th resistance R6 is in parallel with the 5th resistance R5, the electrolytic capacitor C2 and LED Lamp bead, the series circuit configuration of the 5th resistance R5 are in parallel, and the 4th resistance R4 is in parallel with electrolytic capacitor C2.

Further, the rectifier is bridge heap D1.

Further, the driving circuit further includes zener diode DZ, the zener diode DZ and electrolytic capacitor C2 is in parallel.

Further, the current parameters of the PTC are 10mA-200mA.

Further, the one kind of the first resistor R1 in high-power oxidation film resistance, metalfilmresistor.

Further, the first resistor R1 resistance values are 10 Ω -60 Ω, and the rated voltage of the R1 is not less than 250Vac, preferably 350Vac or more.

Further, the overload voltage of the first resistor R1 is not less than 300Vac, preferably 600Vac or more.

Further, the LED lamp bead is no less than 1.

The utility model compared with prior art, by introducing PTC in the major loop of LED illumination lamp driving circuit, has Effect improve driving circuit anti-lightning and rush of current ability, it is ensured that LED light it is safe to use, prevent LED light because excessively high Rush of current and damage, extend the service life of LED light, meet the use demand of user.

Description of the drawings

Fig. 1 is the utility model embodiment circuit diagram；

Fig. 2 is the utility model embodiment LED illumination lamp structural schematic diagram；

Fig. 3 is the utility model embodiment LED illumination lamp side structure schematic diagram.

Specific implementation mode

In order to make those skilled in the art more fully understand the utility model, below in conjunction with the utility model reality The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment is only the embodiment of the utility model part, instead of all the embodiments.Based on the reality in the utility model Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered When the range for belonging to the utility model protection.

It should be noted that term " first " in the specification and claims of the utility model and above-mentioned attached drawing, " second " etc. is for distinguishing similar object, without being used to describe specific sequence or precedence.

The utility model embodiment discloses a kind of LED illuminating lamp for refrigerator, as shown in Figure 1, the LED illumination lamp includes There is major loop, the major loop to be equipped with PTC for driving circuit, the driving circuit.

Optionally, as shown in Figure 1, the major loop includes PTC, rectifier, step-down capacitor C1, LED lamp bead, first resistor R1, the 5th resistance R5, the rectifier include four pins, respectively alternating current input pin, alternating current output pin, direct current Electricity output pin, DC supply input pin, the PTC, step-down capacitor C1 respectively with the alternating current input pin of rectifier, exchange Electricity output pin is connected, the direct current output pin of the rectifier successively with first resistor R1, LED lamp bead, the 5th resistance R5, The DC supply input pin of rectifier is connected.

Particularly, as shown in Figure 1, the driving circuit further include second resistance R2,3rd resistor R3, the 4th resistance R4, 6th resistance R6, electrolytic capacitor C2, the second resistance R2 connect with 3rd resistor R3, the second resistance R2 and 3rd resistor The series circuit configuration of R3 is in parallel with step-down capacitor C1, and the 6th resistance R6 is in parallel with the 5th resistance R5, the electrolytic capacitor C2 and the series circuit configuration of LED lamp bead, the 5th resistance R5 are in parallel, and the 4th resistance R4 is in parallel with electrolytic capacitor C2.

Particularly, as shown in Figure 1, the rectifier is bridge heap D1.

Wherein, as shown in Figure 1, LED lamp bead is to include the first LED lamp bead LED1, the second LED lamp bead LED2, the 3rd LED Lamp bead LED3, wherein the first LED lamp bead LED1, the second LED lamp bead LED2 are connected directly, the electricity of third LED lamp bead LED3 and the 5th Hinder R5, the DC supply input pin of rectifier is connected.

The driving circuit of the utility model embodiment LED illumination lamp using RC resistance-capacitance depressurization principles, AC power from The ends ACL and CAN input, and are supplied to using the rectifying and wave-filtering of bridge heap D1, electrolytic capacitor C2 by the decompression of step-down capacitor C1 The voltage that three LED white lights are stablized.RS is PTC element in figure.

The utility model embodiment effectively improves driving by introducing PTC in the major loop of LED illumination lamp driving circuit The anti-lightning of circuit and the ability of rush of current, damage of the surge currents such as thunder-lightning to bridge heap and LED light, and then ensure LED Lamp it is safe to use, prevent LED light from being damaged because of excessively high rush of current, extend the service life of LED light, meet making for user Use demand.Meanwhile this practical embodiment prevents plug fast insert-pull or contact by applying R2, R3 to be used as the discharge resistance of C1 Have on C1 caused by bad residual voltage and network voltage superposition to subsequent device formed impact, and prevent plug extract after It touches human body and injury is generated to personnel.In addition, the utility model embodiment by using R1 as current-limiting resistance, prevent high pressure Impact to LED light.

Particularly, as shown in Figure 1, the driving circuit further includes zener diode DZ, the zener diode DZ and electricity It is in parallel to solve capacitance C2.

The utility model embodiment allows driving circuit to provide burning voltage to drive by using zener diode DZ LED lamp bead is illuminated, it is ensured that LED lamp bead working environment is stablized, and the working effect of LED lamp bead is improved.

Optionally, the current parameters of the PTC are 10mA-200mA.

Particularly, the one kind of the first resistor R1 in high-power oxidation film resistance, metalfilmresistor.

Particularly, the rated voltage that the first resistor R1 resistance values are 10 Ω -60 Ω, the R1 is not less than 250Vac, excellent Select 350Vac or more.

Particularly, the overload voltage of the first resistor R1 is not less than 300Vac, preferably 600Vac or more.

The utility model embodiment is by selecting resistance to rush of current by force with high voltage bearing resistance as first resistor R1, it is ensured that First resistor R1 can bear instantaneous high pressure in user when carrying out quick-speed plug plug to LED illumination lamp, and then reach protection The effect of LED illumination lamp driving circuit extends the service life of LED illumination lamp.

Particularly, the LED lamp bead is no less than 2.

Wherein, as shown in Figure 2 and Figure 3, the LED lamp bead 24 is 3.Plug 1 is connected by conducting wire with driving circuit 2, drop Voltage capacitance C1 21, first resistor R1 23, electrolytic capacitor C2 22 are positioned on 2 side of driving circuit, and LED lamp bead 24 is then installed In 2 other side of driving circuit.

The utility model embodiment is by the way that LED lamp bead 24 to be mounted on and step-down capacitor C1 21, first resistor R1 23, electricity The opposite other sides capacitance C2 22 are solved, the occupied space of effectively save LED illumination lamp avoids occupying the excessive sky of LED illumination lamp Between, and production LED illumination lamp material requested is reduced, effectively reduce production cost.Meanwhile the utility model is multiple by application LED lamp bead effectively improves the illuminating effect of LED illumination lamp.

Finally it should be noted that above example is only to illustrate the technical solution of the utility model rather than limits it System, although the utility model is described in detail with reference to above-described embodiment, those of ordinary skill in the art should Understand, technical staff read present specification after can still modify to specific embodiment of the present utility model or Equivalent replacement, but these are changed or are changed within all without departing from present utility model application accompanying claims protection domain.

Claims (10)

1. a kind of LED illuminating lamp for refrigerator, which is characterized in that the LED illumination lamp includes driving circuit, the driving circuit tool There are major loop, the major loop to be equipped with PTC.

2. LED illumination lamp according to claim 1, which is characterized in that the major loop includes PTC, rectifier, decompression electricity Hold C1, LED lamp bead, first resistor R1, the 5th resistance R5, the rectifier includes four pins, and respectively alternating current input is drawn Foot, alternating current output pin, direct current output pin, DC supply input pin, the PTC, step-down capacitor C1 respectively with rectification Alternating current input pin, the alternating current output pin of device are connected, and the direct current output pin of the rectifier is electric with first successively It is connected to hinder R1, LED lamp bead, the 5th resistance R5, the DC supply input pin of rectifier.

3. LED illumination lamp according to claim 2, which is characterized in that the driving circuit further includes second resistance R2, Three resistance R3, the 4th resistance R4, the 6th resistance R6, electrolytic capacitor C2, the second resistance R2 connects with 3rd resistor R3, described Second resistance R2 is in parallel with step-down capacitor C1 with the series circuit configuration of 3rd resistor R3, the 6th resistance R6 and the 5th resistance R5 is in parallel, and the electrolytic capacitor C2 and the series circuit configuration of LED lamp bead, the 5th resistance R5 are in parallel, the 4th resistance R4 It is in parallel with electrolytic capacitor C2.

4. LED illumination lamp according to claim 2, which is characterized in that the rectifier is bridge heap D1.

5. LED illumination lamp according to claim 3, which is characterized in that the driving circuit further includes zener diode DZ, The zener diode DZ is in parallel with electrolytic capacitor C2.

6. LED illumination lamp according to claim 1, which is characterized in that the current parameters of the PTC are 10mA-200mA.

7. LED illumination lamp according to claim 2, which is characterized in that the first resistor R1 is selected from high-power oxidation film One kind in resistance, metalfilmresistor.

8. LED illumination lamp according to claim 2, which is characterized in that the first resistor R1 resistance values are 10 Ω -60 Ω, The rated voltage of the R1 is not less than 250Vac.

9. LED illumination lamp according to claim 8, which is characterized in that the overload voltage of the first resistor R1 is not low In 300Vac.

10. LED illumination lamp according to claim 2, which is characterized in that the LED lamp bead is no less than 1.