CN2777465Y

CN2777465Y - Lighting lamp for refrigerator

Info

Publication number: CN2777465Y
Application number: CN 200520039323
Authority: CN
Inventors: 王群辉
Original assignee: SHANGHAI PARASTER CO Ltd
Current assignee: SHANGHAI PARASTER CO Ltd
Priority date: 2005-01-28
Filing date: 2005-01-28
Publication date: 2006-05-03
Anticipated expiration: 2015-01-28

Abstract

The utility model relates to a lighting lamp for a refrigerator, which comprises a base, a lighting component arranged on the base, and a transparent cover covered on the lighting component and the base. The utility model is characterized in that a light source in the lighting component is composed of a plurality of light emitting diodes and a power-switching circuit for driving the light emitting diodes to work; the power-switching circuit comprises a plurality of light emitting diodes and voltage-reducing and current-limiting circuits arranged on one end of the light emitting diodes; the voltage-reducing and current-limiting circuit can be composed of voltage-reducing and current-limiting resistor connected with the light emitting diodes in series or resistance capacitors connected in parallel; the power-switching circuit also comprises an over-voltage protecting circuit, a bridge rectification circuit and a filter circuit. Because the light emitting diodes have small heat generating quantity, the lighting lamp for a refrigerator of the utility model has integral reduction without a heat radiating structure; meanwhile, because the light emitting diodes are in a short-circuit state when generating failures, although some light emitting diodes generate the failures, the lighting lamp can continuously and normally work; otherwise, each light emitting diode has stable and reliable performance and high light effect.

Description

The refrigerator lighting

Technical field

The utility model relates to a kind of illuminating lamp, relates in particular to a kind of refrigerator illuminating lamp.

Background technology

Along with the raising of social progress and living standards of the people, refrigerator has been the daily necessities that can not lack during people live.In refrigerator, place article for convenience or from refrigerator, take out article, so be provided with illuminating lamp in the refrigerator.

For a long time, what prior art was arranged on the common employing of the interior illuminating lamp of refrigerator is incandescent lamp, though incandescent lamp can play the effect of illumination, the defective that exists in actual manufacturing and use is:

1. because incandescent lamp can be generated heat when work, so the lighting of employing incandescent lamp will have cooling measure, thereby not only make the bigger installation of size of light fixture difficult, and cost also improve thereupon;

2. because incandescent lamp is the not high light-emitting component of light efficiency, therefore also need select the slightly high incandescent lamp of power as the illumination in the refrigerator even be installed in the refrigerator of finite volume, make it to have increased power consumption;

3. because incandescent lamp stable undesirable, so not only increased the workload of after-sale service, and made troubles to maintenance.

Summary of the invention

The purpose of this utility model is to provide a kind of improved refrigerator lighting, and it is not only energy-conservation, and stable working state.

The purpose of this utility model is achieved in that

A kind of refrigerator lighting comprises: a lamp base, be arranged on the light fixture on the lamp base, and be located at the diffuser on light fixture and the lamp base; Be characterized in:

Light source in the described light fixture is made up of the power-switching circuit of a plurality of light emitting diodes and the work of driving light emitting diode thereof.

Use in the lighting at above-mentioned refrigerator, wherein, described light fixture also comprises a circuit board, this circuit board combines with lamp base, the light source of settling a plurality of light emitting diode to form at this circuit board, described power-switching circuit is arranged on the rear side of circuit board, at this circuit board rear side one connector in order to be connected with working power is set also.

With in the lighting, wherein, described power-switching circuit comprises, constitutes a plurality of light emitting diodes of light source at above-mentioned refrigerator, at an end of light emitting diode one step-down current-limiting circuit is set.

With in the lighting, wherein, the step-down current-limiting circuit in the described power-switching circuit is made up of the step-down current-limiting resistance of connecting with the light emitting diode that constitutes light source at above-mentioned refrigerator; The free end of the step-down current-limiting resistance after being connected in series and the negative pole end of light emitting diode are that the pin 2 of binding post J1 is connected with pin 1 with power input respectively, and this binding post J1 is placed in the connector on the circuit board.

With in the lighting, wherein, the step-down current-limiting circuit in the described power-switching circuit is made up of parallel resistor R1 and capacitor C 1 at above-mentioned refrigerator; Described power-switching circuit also comprises: an overvoltage crowbar, a bridge rectifier and a filter circuit; Described overvoltage crowbar is made of resistance controller R2, and this resistance controller R2 is connected across power input; The interchange of described bridge rectifier is imported an end and is arranged on the parallel connected end that level after the step-down current-limiting circuit promptly is connected resistance R 1 and capacitor C 1, and the other end is connected pin " 1 " end of power supply terminal J1; Described filter circuit is made of capacitor C 3, and this filter capacitor C3 is connected across the dc output end of bridge rectifier; After connecting, a plurality of light emitting diode series connection of described formation light source are attempted by the two ends of filter capacitor C3.

With in the lighting, wherein, the lamp socket that extends to form a hollow is protruded at described lamp base body middle part in end sunk part at above-mentioned refrigerator, and the shape of the lamp socket of this hollow and the circuit board in the light fixture are suitable and this circuit board is included in the end; Lamp socket central authorities have the lamp socket connecting hole that a cylindrical and hollow connects, and described light fixture passes circuit board and lamp socket connecting hole by the light fixture screw and is spirally connected and is arranged on the lamp base; The lamp socket connecting hole of lamp socket is other to be provided with a connector hole, and the connector on the described light fixture circuit board is seated in the bearing crib hole of lamp socket.

Use in the lighting at above-mentioned refrigerator, wherein, the both sides of described lamp base body are provided with two base connecting holes respectively, and the appropriate position of described diffuser body both sides is provided with the wedge shape claw, this wedge shape claw and base connecting hole suitable and with the wedge shape claw; One side of described lamp base body is provided with an arc elastic hook sheet; The appropriate position of the corresponding side of described diffuser body is provided with a butt hook groove, and this butt hook groove and hook sheet are suitable and closely fasten with arc elastic hook sheet.

With in the lighting, wherein, the connecting hole that a hollow connects is set at least at above-mentioned refrigerator on the described lamp base, lamp base is adjacent to and is fixed on the refrigerator inwall by screw.

With in the lighting, wherein, described lamp base body middle part is protruded in end sunk part and is extended to form an arc lamp socket at above-mentioned refrigerator; The shape of the circuit board in the described light fixture and lamp base body medial recess part and arc lamp socket thereof are suitable and be arranged on arc lamp socket and the body thereof; The printed circuit board (PCB) shield of one L shaped shape is set on the circuit board of described light fixture, the vertical component of this printed circuit board (PCB) shield is between the light emitting diode and other components and parts of forming light source, and the planar section of printed circuit board (PCB) shield blocks on circuit board and other components and parts.

The utility model refrigerator, makes it compared with prior art owing to adopted above-mentioned technical scheme with lighting, has following advantage and good effect:

1. the utility model is owing to adopt a plurality of LEDs to form light sources, therefore light efficiency height not only, and can energy savings as the light fixture of light source with LED;

2. the utility model is owing to be placed in light emitting diode on the circuit board, and is therefore easy for installation, as long as plug in, with tap bolt lamp base is fixed on the refrigerator inwall, and card is gone up diffuser then, just finishes the assembly working of refrigerator with lighting;

3. the utility model is owing to adopt a plurality of LEDs to form light source, and LED when work caloric value is very little, therefore do not need to be provided with special radiator structure, thereby the light fixture overall dimensions is dwindled, and to economize cost low because of materials, greatly reduce the occupancy volume of lighting simultaneously, be used to deposit more article but make it the interior slot milling of refrigerator to the refrigerator inside space;

4. the utility model is made of a plurality of light emitting diodes owing to light source, can be connected in parallel between a plurality of light emitting diodes and also can be connected in series, even therefore there are indivedual LEDs to lose efficacy, as long as overall brightness satisfies the marginal illumination requirement of refrigerator, this light fixture can also continue operate as normal;

5. the utility model is owing to the LED stable performance that constitutes light source, reliable, and the life-span that makes it lighting is long.

Description of drawings

To the description of some embodiment of lighting of the utility model refrigerator, can further understand the purpose of this utility model, specific structural features and advantage by following in conjunction with its accompanying drawing.Wherein, accompanying drawing is:

Fig. 1 is the structural representation of the utility model refrigerator with the lighting first embodiment decomposing state;

Fig. 2 is the sectional structure schematic diagram of the utility model refrigerator with the lighting first embodiment assembled state;

Fig. 3 is the structural representation of the utility model refrigerator with the lighting first embodiment assembled state;

Fig. 4 is the electrical schematic diagram of the utility model refrigerator with power-switching circuit in the lighting first embodiment light fixture;

Fig. 5 is the structural representation of the utility model refrigerator with the lighting second embodiment decomposing state;

Fig. 6 is the electrical schematic diagram of the utility model refrigerator with power-switching circuit in the lighting second embodiment light fixture.

The specific embodiment

See also shown in the accompanying drawing, the utility model refrigerator lighting, by lamp base 10 and be arranged on the light fixture 20 on the lamp base 10 and be located at light fixture 20 and lamp base 10 on diffuser 30 form.With the prior art refrigerator with lighting different be that the light source 22 in the utility model light fixture 20 is made up of a plurality of light emitting diodes and the power-switching circuit 23 that drives light emitting diode work thereof.

See also Fig. 1 to shown in Figure 4, they are respectively decomposing state, assembled state, the structural representation of assembled state and the electrical schematic diagram of power-switching circuit of the utility model refrigerator with lighting first embodiment.In the present embodiment, refrigerator is made up of lamp base 10, light fixture 20 and diffuser 30 with lighting.

Described light fixture 20 comprises, one circuit board 21 that combines with lamp base 10, be placed in and form the light source 22 of light fixture by a plurality of light emitting diodes on the circuit board 21, be provided with power-switching circuit 23 in order to the work of control light emitting diode at the rear side of circuit board 21; On circuit board 21, also be provided with a connector 24, in order to being connected of power-switching circuit 23 and working power.

See also shown in Figure 4ly, this is the utility model refrigerator with the electrical schematic diagram of power-switching circuit in the lighting first embodiment light fixture.In light fixture 20, the power-switching circuit 23 that is arranged on the circuit board 21 comprises: constitute a plurality of light emitting diodes of light source 22, at an end of light emitting diode one step-down current-limiting circuit is set; In the present embodiment, constitute light source 22 by four light emitting diode led1 to led4 that are connected in parallel, a step-down current-limiting resistance is connected in series respectively on each light emitting diode, formed the step-down current-limiting circuit in the power-switching circuit 23, the free end of the step-down current-limiting resistance after being connected in series and the negative pole end of light emitting diode are that the pin 2 of binding post J1 is connected with pin 1 with power input respectively, this binding post J1 is placed in the connector 24 on the circuit board 21, with with being connected of working power, provide power-switching circuit 23 power supplys, power promptly for four light emitting diode D1 to D4.

Please continue referring to Fig. 1 to shown in Figure 3 the structural representation of the decomposing state of their refrigerator usefulness lightings that to be respectively the utility model first embodiment is made up of lamp base 10, light fixture 20 and diffuser 30, assembled state, assembled state in conjunction with Fig. 4.

Caved in the end of in the middle part of described lamp base 10 bodies 11, the lamp socket 14 that extends to form a hollow is protruded in central authorities at body 11 sunk parts, circuit board 21 shapes in the shape of this lamp socket 14 and the light fixture 20 are suitable, and circuit board 21 is included in its end; Lamp socket 14 central authorities have the lamp socket connecting hole 15 that a cylindrical and hollow connects, and light fixture 20 passes circuit board 21 by light fixture screw 25 and is spirally connected with lamp socket 14 connecting holes 15 and is arranged on the lamp base 10; Promptly be positioned at lamp socket connecting hole 15 sides in the lamp socket 14 a connector hole 16 is set, the connector on the circuit board 21 24 is seated in the bearing crib hole 16 of above-mentioned lamp socket 14 in the light fixture 20 in order to provide; Lamp base 10 can be varied with being connected of refrigerator, in the present embodiment, the connecting hole 17 that one hollow connects is set on lamp base 10 at least, be provided with two connecting holes 17 among Fig. 1,2,3, pass two connecting holes 17 by two screws 18 (what adopt in the present embodiment is two tap bolts 18) lamp base 10 is adjacent to and is fixed on the refrigerator inwall.

The both sides of described lamp base 10 bodies 11 respectively are provided with two base connecting holes 12, simultaneously, in the appropriate position of diffuser 30 bodies 31 both sides two wedge shape claws 32 are set respectively, and the wedge shape claw 32 of diffuser 30 is suitable with base connecting hole 12; And, in a side of lamp base 10 bodies 11 an arc elastic hook sheet 13 is set, simultaneously, one butt hook groove 33 is set in the appropriate position of diffuser 30 bodies 31 corresponding sides, this butt hook groove 33 is suitable with hook sheet 13; When need combine diffuser 30 with lamp base 10, wedge shape claw 32 by diffuser 30 is inserted in the connecting hole 12 of lamp base 10 and cooperates chucking, simultaneously, the arc elastic hook sheet 13 of lamp base 10 stretches out the butt hook groove 33 of diffuser 30 and suppresses on butt hook groove 33, thereby makes combining closely and not oppositely slippage of diffuser 30 and lamp base 10.

Please in conjunction with Fig. 1 and Fig. 4 referring to Fig. 5 and shown in Figure 6, Fig. 5 and Fig. 6 are respectively the utility model refrigerators with the decomposing state structural representation of lighting second embodiment and the electrical schematic diagram of power-switching circuit.The structure of the present embodiment and first embodiment is roughly the same, and different is, the operating current of light source 22 is the direct current input in above-mentioned first embodiment, and the operating current of light source 22 is for exchanging input in the present embodiment.

See also shown in Figure 6ly, Fig. 6 is the utility model refrigerator with the electrical schematic diagram of power-switching circuit among lighting second embodiment.In the present embodiment, power-switching circuit 23 comprises the step-down current-limiting circuit, also comprises an overvoltage crowbar, a bridge rectifier and a filter circuit.The step-down current-limiting circuit is made up of parallel resistor R1 and capacitor C 1; Overvoltage crowbar is made of resistance controller R2, and this resistance controller R2 is connected across power input; The interchange of bridge rectifier is imported an end and is arranged on the parallel connected end that level after the step-down current-limiting circuit promptly is connected resistance R 1 and capacitor C 1, and the other end is connected pin " 1 " end of power supply terminal J1; Filter circuit is made of capacitor C 3, and filter capacitor C3 is connected across the dc output end place of bridge rectifier; And five light emitting diode led1 to led5 that constitute light source 22 are attempted by the two ends of filter capacitor C3 after being connected in series.By as seen above-mentioned, after the input of power-switching circuit 23 power supplys of the control diode operation of present embodiment through step-down and the rectification of bridge rectifier and the filtering of filter circuit of step-down current-limiting circuit, offer five light emitting diode led1 to led5 stable power, thereby form desirable light source 22.

Please in conjunction with Fig. 6 referring to shown in Figure 5, Fig. 5 is the utility model refrigerator with the decomposing state structural representation of lighting second embodiment.As shown in Figure 6, because the power-switching circuit 23 in the present embodiment also comprises bridge rectifier and filter circuit, so also respective change of the dependency structure of the circuit board 21 in lamp base 10 and the light fixture 20.

In the present embodiment, body 11 middle parts of lamp base 10 are protruded in end sunk part and are extended to form an arc lamp socket 14 ', and the shape of this arc lamp socket 14 ' is the Ω shape of 90 ° of right-hand rotations; The shape of the circuit board 21 ' in the light fixture 20 and lamp base 10 bodies 11 medial recess part and arc lamp socket 14 ' thereof are suitable, form the shape that semicircle adds rectangle, and this circuit board 21 ' is arranged on arc lamp socket 14 ' and the body 11 thereof.One printed circuit board (PCB) shield 26 also is set on the circuit board 21 of light fixture 20, this printed circuit board (PCB) shield 26 is L-shaped, the vertical component of printed circuit board (PCB) shield 26 is between the light emitting diode and other components and parts of forming light source 22, and the planar section of printed circuit board (PCB) shield 26 blocks on circuit board 21 and other components and parts.

See also shown in Figure 3ly, the utility model is to install like this:

I step, light fixture 20 that a plurality of light emitting diodes are installed is passed circuit board 21 by screw 25 be spirally connected with lamp socket 14 connecting holes 15 and be arranged on the lamp base 10;

In the II step, lamp base 10 is fixed on the refrigerator inwall by two connecting holes 17 that two tap bolts 18 pass lamp base 10; If that adopt is second embodiment, the printed circuit board (PCB) shield 26 of arrangement one L shaped shape between light emitting diode that light fixture 20 constitutes light sources 22 and other components and parts then;

The III step, two wedge shape claws 32 of diffuser 30 both sides are stretched in base 10 respective connecting 12, suitable mobile diffuser 30, diffuser 30 wedge shape claws 32 are moved in base connecting hole 12, the wedge structure of claw 32 can effectively be combined with base connecting hole 12, make butt hook groove 33 on the lamp base 10 stretch out the butt hook groove 33 of diffuser 30 simultaneously and suppress on butt hook groove 33, diffuser 30 and lamp base 10 are combined closely and not oppositely slippage.

So, install in refrigerator that to connect the power supply illuminating lamp behind the lighting of being made up of light emitting diode promptly bright, power supply disconnects and then going out.

In sum, the utility model refrigerator adopts a plurality of LEDs to form light source with lighting, because LED when work caloric value is very little, therefore need not radiator structure is set and make light fixture integral body dwindle the occupancy volume of reduction the refrigerator inside space; Simultaneously, be short-circuit condition when losing efficacy, do not influence the continuation operate as normal of light fixture even indivedual thus LED loses efficacy owing to LED; In addition because LED light efficiency height stable and reliable for performance, not only energy savings and lighting life-span long, and easy for installation, therefore very practicality.

Claims

1. refrigerator lighting comprises:

One lamp base (10) is arranged on the light fixture (20) on the lamp base (10), is located at the diffuser (30) on light fixture (20) and the lamp base (10); It is characterized in that:

Light source (22) in the described light fixture (20) is made up of the power-switching circuit (23) of a plurality of light emitting diodes and the work of driving light emitting diode thereof.

2. refrigerator lighting as claimed in claim 1, it is characterized in that: described light fixture (20) also comprises a circuit board (21), this circuit board (21) combines with lamp base (10), the light source (22) of settling a plurality of light emitting diode to form at this circuit board (21), described power-switching circuit (23) is arranged on the rear side of circuit board (21), at this circuit board (21) rear side one connector (24) in order to be connected with working power is set also.

3. refrigerator lighting as claimed in claim 1 is characterized in that: described power-switching circuit (23) comprises, constitutes a plurality of light emitting diodes of light source (22), at an end of light emitting diode one step-down current-limiting circuit is set.

4. refrigerator lighting as claimed in claim 3 is characterized in that: the step-down current-limiting circuit in the described power-switching circuit (23) is made up of the step-down current-limiting resistance of connecting with the light emitting diode that constitutes light source (22); The free end of the step-down current-limiting resistance after being connected in series and the negative pole end of light emitting diode are that the pin 2 of binding post J1 is connected with pin 1 with power input respectively, and this binding post J1 is placed in the connector (24) on the circuit board (21).

5. refrigerator lighting as claimed in claim 3 is characterized in that:

Step-down current-limiting circuit in the described power-switching circuit (23) is made up of parallel resistor R1 and capacitor C 1;

Described power-switching circuit (23) also comprises: an overvoltage crowbar, a bridge rectifier and a filter circuit; Described overvoltage crowbar is made of resistance controller R2, and this resistance controller R2 is connected across power input; The interchange of described bridge rectifier is imported an end and is arranged on the parallel connected end that level after the step-down current-limiting circuit promptly is connected resistance R 1 and capacitor C 1, and the other end is connected pin " 1 " end of power supply terminal J1; Described filter circuit is made of capacitor C 3, and this filter capacitor C3 is connected across the dc output end of bridge rectifier;

After connecting, a plurality of light emitting diode series connection of described formation light source (22) are attempted by the two ends of filter capacitor C3.

6. refrigerator lighting as claimed in claim 1 is characterized in that:

The lamp socket (14) that extends to form a hollow is protruded at described lamp base (10) body (11) middle part in end sunk part, the circuit board (21) in the shape of the lamp socket of this hollow (14) and the light fixture (20) is suitable and this circuit board (21) is included in the end;

Lamp socket (14) central authorities have the lamp socket connecting hole (15) that a cylindrical and hollow connects, and described light fixture (20) passes circuit board (21) and lamp socket (14) connecting hole (15) by light fixture screw (25) and is spirally connected and is arranged on the lamp base (10);

The lamp socket connecting hole (15) of lamp socket (14) is other to be provided with a connector hole (16), and the connector (24) on described light fixture (20) circuit board (21) is seated in the bearing crib hole (16) of lamp socket (14).

7. refrigerator lighting as claimed in claim 1 is characterized in that:

The both sides of described lamp base (10) body (11) are provided with two base connecting holes (12) respectively, the appropriate position of described diffuser (30) body (31) both sides is provided with wedge shape claw (32), this wedge shape claw (32) and base connecting hole (12) suitable and with wedge shape claw (32);

One side of described lamp base (10) body (11) is provided with an arc elastic hook sheet (13); The appropriate position of the corresponding side of described diffuser (30) body (31) is provided with a butt hook groove (33), and this butt hook groove (33) and hook sheet (13) are suitable and closely fasten with arc elastic hook sheet (13).

8. refrigerator lighting as claimed in claim 1 is characterized in that: the connecting hole (17) that a hollow connects is set on the described lamp base (10) at least, by screw (18) lamp base (10) is adjacent to and is fixed on the refrigerator inwall.

9. as claim 1 or 6 described refrigerator lightings, it is characterized in that:

Described lamp base (10) body (11) middle part is protruded in end sunk part and is extended to form an arc lamp socket (14 ');

The shape of the circuit board (21 ') in the described light fixture (20) and lamp base (10) body (11) medial recess part and arc lamp socket (14 ') thereof are suitable and be arranged on arc lamp socket (14 ') and the body (11) thereof;

The printed circuit board (PCB) shield (26) of one L shaped shape is set on the circuit board (21 ') of described light fixture (20), the vertical component of this printed circuit board (PCB) shield (26) is positioned between the light emitting diode and other components and parts of forming light source (22), and the planar section of printed circuit board (PCB) shield (26) blocks on circuit board (21 ') and other components and parts.