CN203011067U - Lighting device capable of being used in refrigerator - Google Patents
Lighting device capable of being used in refrigerator Download PDFInfo
- Publication number
- CN203011067U CN203011067U CN 201220672156 CN201220672156U CN203011067U CN 203011067 U CN203011067 U CN 203011067U CN 201220672156 CN201220672156 CN 201220672156 CN 201220672156 U CN201220672156 U CN 201220672156U CN 203011067 U CN203011067 U CN 203011067U
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- Prior art keywords
- light
- led lamp
- refrigerator
- lighting device
- source
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000004065 semiconductor Substances 0.000 claims abstract description 9
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000004313 glare Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000012186 Litura Species 0.000 description 1
- 238000003854 Surface Print Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses a lighting device capable of being used in a refrigerator. The lighting device capable of being used in the refrigerator is characterized in that a light emitting diode (LED) lamp with a light-point source is adopted, and a light guiding plate is arranged on the side edge of the LED lamp or above the LED lamp to form a side light source emitted from the light guiding plate; and pulse width modulation (PWM) signals of an input / output (I / O) interface of multipoint control unit (MCU) are adopted as a signal source of a power supply source of the LED lamp, the PMW signals are connected to a base electrode of an audion Q1, turn-on and turn-off rate of metal oxide semiconductor (MOS) tube Q2 is modulated through turn-on and turn-off of the audion Q1, and the LED lamp is arranged at a drain electrode of the MOS tube Q2. According to the lighting device capable of being used in the refrigerator is uniform in brightness, soft in light, capable of being adjusted in brightness, and energy-saving and environment-friendly.
Description
Technical field
The utility model belongs to electric light source technology field, more particularly especially a kind of electric light source that can be applicable in the household electrical appliance such as refrigerator.
Background technology
Existing electric light source is of all kinds, can be divided into spot light by the size of illuminator, and line source and expansion light source (claiming again the extension light source) are area source.Along with the raising of living standards of the people, also improving constantly for the requirement of lighting source, Landscape Lighting of household electrical appliance, public place etc. especially has corresponding requirement for brightness, light pollution and the everyway such as attractive in appearance.The direct glare that the point light source light-emitting body produces is exactly a kind of light pollution source, produces direct glare for fear of the point light source light-emitting body and brings light pollution.Generally adopt at present the lampshade of complete wear sand glass or grid type, with this litura light source luminescent point, but such mode luminous energy loss is larger; For the direct glare of spot light, the employing white plastic that also has or translucent fabric lampshade, but this not only causes larger loss, and bring insecurity.
LED belongs to energy-conserving and environment-protective, radiationless laser class spot light, and power is more large more dazzling, and the bright dipping non-uniform phenomenon can appear in plurality of LEDs.Can regulate brightness of illumination by the voltage or the electric current that change power supply, but LED is the semiconductor devices of characteristic sensitivity, has negative temperature characteristic, needs stable voltage and current, thereby produced the concept that drives.The LED device is had relatively high expectations to driving power, and very little skew occurs for voltage or electric current all can change luminous intensity, changes colour temperature, and namely light color changes, and light causes brightness irregularities after the LGP stack, the black patch even occurs.
The utility model content
The utility model is for avoiding the existing weak point of above-mentioned prior art, provide a kind of brightness even, soft and adjustable can be applicable to lighting device in refrigerator.
The utility model is that the technical solution problem adopts following technical scheme:
The design feature that the utility model can be applicable to the lighting device in refrigerator is: adopt spot light LED lamp, the side of described LED lamp or above LGP be set form area source by described LGP outgoing; The power supply of described LED lamp is that pwm signal with I/O output port in the MCU unit is as signal source, the base stage of described pwm signal access triode Q1, with the switch ratio of cut-offfing modulation metal-oxide-semiconductor Q2 of triode Q1, described LED lamp is arranged on the drain electrode of described metal-oxide-semiconductor Q2.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model with LED spot light incident LGP, is area source by the LGP outgoing, realizes the conversion of light path of light, and beam projecting is even, soft, and having solved the LED spot light is the problem of dazzle;
2, in the utility model the power supply of LED by the MCU output pwm signal as signal source, realize LED spot light power supply modulation realizing that brightness is adjustable by control circuit;
3, the utility model adopts LED device, energy-conserving and environment-protective.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model back lighting modulated structure figure;
Fig. 3 is the utility model power principle figure;
Number in the figure: 1 reflector plate; 2 LGPs; 3 silk-screen ink dots; 4 diffusion sheets; 5 spot light LED lamps;
The specific embodiment
Referring to Fig. 1, the structure that the present embodiment can be applicable to the lighting device in refrigerator is set to: adopt spot light LED lamp 5, at the side of the former LED lamp 5 of a light, be that the side incident type arranges the area source that LGP 2 forms by the LGP outgoing.
In concrete enforcement, as shown in Figure 2, the light of spot light LED lamp 5 being launched by LGP 2 converts area source to, LGP 2 backs are provided with reflector plate 1, exit facet one side of LGP is provided with diffusion sheet 4, and spot light LED lamp 5 is attached to the side of LGP, and light enters to inject silk-screen ink dot 3 generation diffuse reflections in LGP by side, further pass through the total reflection of reflector plate 1 and the scattering process of diffusion sheet 4, launch even, soft area source.
Referring to Fig. 3, in the present embodiment, the power supply of LED lamp is that pwm signal with I/O output port in the MCU unit is as signal source, the base stage of pwm signal access triode Q1, with the switch ratio of cut-offfing modulation metal-oxide-semiconductor Q2 of triode Q1, the LED lamp is arranged on the drain electrode of metal-oxide-semiconductor Q2, realizes that the brightness of LED changes, its change frequency can determine by the input signal of MCU unit, can be determined by refrigerator doors states such as opening refrigerator doors position, speed in the present embodiment.Method with the power supply dutycycle is controlled constant-current source, and when regulating dutycycle, power supply voltage strength and supply current are constant.
In concrete enforcement, metal-oxide-semiconductor is ML3407, also can select as required other power tube; LGP is to carry out optical treatment on transparent sheet material, make the light that is incident on LGP produce evenly soft area source by optical physics principles such as reflection or refractions, this form light conversion ratio is high, light even, the LED lamp life-span is long, safety and environmental protection.Optical treatment comprises: printing reflective site or carve netted ruling on transparent sheet material, and utilize the refraction of the ruling of the silk-screen ink dot of LGP surface printing or engraving to make light diffusion, realize that spot light is to the conversion of area source; Can be also to add the nanoscale light diffusing particles when clear sheet (as transparent acrylic) is cast; Can also can stick relevant decorative pattern on the exiting surface of transparent light guide plate, improve its sight.
The utility model is applied to can promote in refrigerator the quality of refrigerator energy-saving environmental protection, and the signals such as the state of switch refrigerator doors, position, speed are combined with refrigerator lighting brightness, refrigerator is had interactive.The utility model can be applicable on other electrical equipment such as air-conditioning too.
Claims (1)
1. lighting device that can be applicable in refrigerator is characterized in that: adopt spot light LED lamp, the side of described LED lamp or above LGP be set form area source by described LGP outgoing; The power supply of described LED lamp is that pwm signal with I/O output port in the MCU unit is as signal source, the base stage of described pwm signal access triode Q1, with the switch ratio of cut-offfing modulation metal-oxide-semiconductor Q2 of triode Q1, described LED lamp is arranged on the drain electrode of described metal-oxide-semiconductor Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672156 CN203011067U (en) | 2012-12-07 | 2012-12-07 | Lighting device capable of being used in refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672156 CN203011067U (en) | 2012-12-07 | 2012-12-07 | Lighting device capable of being used in refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011067U true CN203011067U (en) | 2013-06-19 |
Family
ID=48602656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220672156 Expired - Fee Related CN203011067U (en) | 2012-12-07 | 2012-12-07 | Lighting device capable of being used in refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011067U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015114005A (en) * | 2013-12-10 | 2015-06-22 | Ｋｉｓｃｏ株式会社 | Refrigerator |
| CN105318641A (en) * | 2014-06-09 | 2016-02-10 | 苏州三星电子有限公司 | Refrigerator internal lighting control circuit and control method |
| CN108076566A (en) * | 2017-12-27 | 2018-05-25 | 厦门阳光恩耐照明有限公司 | The LED circuit of two-way light modulation toning |
-
2012
- 2012-12-07 CN CN 201220672156 patent/CN203011067U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015114005A (en) * | 2013-12-10 | 2015-06-22 | Ｋｉｓｃｏ株式会社 | Refrigerator |
| CN105318641A (en) * | 2014-06-09 | 2016-02-10 | 苏州三星电子有限公司 | Refrigerator internal lighting control circuit and control method |
| CN105318641B (en) * | 2014-06-09 | 2018-03-20 | 苏州三星电子有限公司 | A kind of refrigerator inside illumination control circuit and control method |
| CN108076566A (en) * | 2017-12-27 | 2018-05-25 | 厦门阳光恩耐照明有限公司 | The LED circuit of two-way light modulation toning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 230601 No. 2163 Lianhua Road, Hefei economic and Technological Development Zone, Anhui Patentee after: CHANGHONG MEILING Co.,Ltd. Address before: 230061 No. 2163 Lianhua Road, Hefei economic and Technological Development Zone, Anhui Patentee before: HEFEI MEILING Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20211207 |