CN201429947Y - LED backlight screen for refrigerator - Google Patents
LED backlight screen for refrigerator Download PDFInfo
- Publication number
- CN201429947Y CN201429947Y CN2009200597939U CN200920059793U CN201429947Y CN 201429947 Y CN201429947 Y CN 201429947Y CN 2009200597939 U CN2009200597939 U CN 2009200597939U CN 200920059793 U CN200920059793 U CN 200920059793U CN 201429947 Y CN201429947 Y CN 201429947Y
- Authority
- CN
- China
- Prior art keywords
- led
- circuit board
- guide plate
- light guide
- refrigerator
- Prior art date
- 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 - Lifetime
Links
- 239000012528 membrane Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 abstract description 5
- 206010014357 Electric shock Diseases 0.000 abstract 1
- 238000005286 illumination Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Landscapes
- Illuminated Signs And Luminous Advertising (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses an LED backlight screen for a refrigerator, which comprises a light guide plate (3) and a circuit board (5) arranged on the light guide plate (3). The circuit board (5) isprovided with a plurality of LEDs (8). The circuit board (5) is a circuit formed in a mode that a plurality of branch circuits, which are formed in a mode that three to six LEDs (8) and current-limiting resistors thereof are connected in series, are connected in parallel with each other. And the circuit board (5) is arranged on a PCB board (9). The utility model realizes a uniform luminance sourcewith less thickness and large area. The LED backlight screen of the utility model adopts a DC safety voltage to supply power, and has no additional requirements of electric-shock resistance safety protection for a refrigerator door body. Moreover, the utility model has the advantages of energy saving and convenient installation when being used on an advertising lamp box of a panel of the refrigerator door.
Description
Technical field
The utility model relates to the technical field of refrigerator in the household electrical appliance, relates in particular to a kind of LED-backlit screen that is used for door of refrigerator panel advertising lamp box.
Background technology
The refrigerator of some band advertising lamp box is with the outside of lamp box advertisement setting at refrigerator door plank, present this refrigerator advertising lamp box adopts the foaming layer at door to add one with the lamp box scheme of fluorescent tube as lighting source, because the restriction of the gross thickness of refrigerator door, the illumination section thickness of this door face board lamp box own is bigger, tie up the door foaming layer and have influence on the insulation of refrigerator, and the distance of light pipe and outside surface too closely causes the brightness irregularities on lamp box surface, influences lamp box advertisement appearance.Simultaneously,, there is potential safety hazard in the process of power supply by the door hinge, and surperficial clear glass or organic glass are had higher shock resistance requirement of shelter to guarantee security of products because the circuit of fluorescent tube is the forceful electric power circuit.
Though the LED-backlit screen has been the ripe device of using in liquid crystal display device, traditional LED-backlit panel is long-pending less, and mounting means is not suitable for the door face board installation of refrigerator.
The utility model content
The technical problems to be solved in the utility model provides a kind of not only thin thickness and light is evenly distributed in the scope of whole display surface, the LED-backlit screen that the refrigerator that adopts the direct current safe voltage to power is simultaneously used.
For solving its technical matters, the technical solution of the utility model is: a kind of refrigerator shields with LED-backlit, comprises light guide plate and is installed in circuit board on the light guide plate, and be equiped with several LED on the circuit board.
Described light guide plate each side is equipped with a circuit board.
The circuit that described circuit board is connected in parallel and forms for several branch roads that comprise that 3～6 LED and current-limiting resistance thereof are connected in series, and be installed on the pcb board.
Connect by lead between the described circuit board, also be connected with the power supply of backlight screen on the circuit board, connect as power supply with two leads between two circuit boards by lead.The LED-backlit screen adopts the power supply of direct current safe voltage, and refrigerator door is not had additional electric shock-prevention safety requirement of shelter.
Further, the LED-backlit screen also comprises light-diffusing film, and light-diffusing film posts the back side in light guide plate, and light-diffusing film is towards the full equally distributed black round dot of one side seal of light guide plate, and the round dot that the printing rule is arranged on the light-diffusing film plays the effect of even illumination.
Further again, LED-backlit screen comprises that also reflective membrane, reflective membrane post the upper and lower side in light guide plate, with the reflection of the light in the light guide plate, avoids light to shed the brightness that can improve the backlight screen edge simultaneously from the cross section of both sides up and down.
Further, the LED-backlit screen also comprises photomask, photomask posts the both sides in the light guide plate front, described photomask begins inwardly to paste from the position of circuit board, the pad pasting width is 15-30mm, block the luminous high-brightness region of LED by photomask like this, from visually having guaranteed the illumination uniformity of whole LED backlight screen light-emitting zone.
Described width of circuit board is not more than the thickness of light guide plate, guarantees that whole LED backlight screen thickness is little.
The utility model with respect to the beneficial effect of prior art is: the utility model is realized little thickness, large-area uniform area light source; The utility model LED-backlit screen adopts the power supply of direct current safe voltage, and refrigerator door is not had additional electric shock-prevention safety requirement of shelter.Also have energy-conservation in addition and advantage easy for installation when the refrigerator door plank advertising lamp box uses.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model circuit board schematic diagram;
Fig. 2 is the utility model structural representation;
Fig. 3 is another angle synoptic diagram of Fig. 2;
Fig. 4 is the local enlarged diagram of Fig. 2.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the LED-backlit screen comprises light guide plate 3 and is installed in the circuit board 5 of light guide plate 3 both sides, is equiped with several LED8 on the circuit board 5.
Among Fig. 1, LED-backlit screen adopts the power supply of direct current 12V power supply, and white highlighted LED is as light-emitting component, and three LED and current-limiting resistance series connection thereof become a branch road, and a plurality of branch roads compose in parallel circuit.
Among Fig. 2, Fig. 3, Fig. 4, circuit board 5 is arranged (as shown in Figure 4) on the pcb board 9 that is installed in elongated shape according to the circuitry in close of Fig. 1 for a plurality of LED8 and current-limiting resistance thereof.Two identical circuit boards 5 are installed in the left and right sides face of light guide plate 3 respectively, light guide plate 3 is the transparent acrylic board of rectangle of thickness 4mm, size is determined according to the installation requirement of refrigerator door plank, whole LED backlight screen outward appearance is a rectangle, the light emission direction of LED8 is towards light guide plate 3 during installation, be that lead-in wire 4 connects between illustrated plate with two leads between two circuit boards 5 of light guide plate 3 left and right sides, wherein a circuit board 5 is that illustrated power supply lead wire 1 inserts power supply by lead, and power supply lead wire 1 is made up of two leads.Post light-diffusing film 7 at the back side of light guide plate 3, light-diffusing film 7 is towards the full equally distributed black round dot of one side seal of light guide plate 3, the round dot diameter is 1-2mm, and adjacent round dot center distance is 2-3mm, and the round dot that the printing rule is arranged on the light-diffusing film 7 plays the effect of even illumination; Upper and lower side in light guide plate 3 posts reflective membrane 2 respectively, reflective membrane 2 is attached on the cross section of dual-side up and down of light guide plate 3, reflective membrane 2 avoids light to shed from the cross section of the both sides up and down of light guide plate 3 reflection of the light in the light guide plate 3, the brightness that can improve the LED-backlit platen edge simultaneously; Both sides in light guide plate 3 fronts post photomask 6, photomask 6 begins inwardly to paste from the position of circuit board 5, the pad pasting width is 15-30mm, photomask 6 is attached to the both sides in light guide plate 3 fronts along circuit board 5, avoid the user directly to see near the zone of luminous point of LED8, promptly adopt photomask 6 to block high-brightness region, this zone is not as backlight area, from visually having guaranteed the illumination uniformity of whole LED backlight screen light-emitting zone.
To sum up, the utility model LED-backlit screen adopts the power supply of direct current safe voltage, and refrigerator door not have the electric shock-prevention safety requirement of shelter that adds, and not only thickness is less than 5mm for the whole LED backlight screen, and light is evenly distributed in the scope of whole display surface.
Claims (10)
1, a kind of refrigerator shields with LED-backlit, it is characterized in that comprising light guide plate (3) and is installed in circuit board (5) on the light guide plate (3), and be equiped with several LED (8) on the circuit board (5).
2, the LED-backlit screen used of refrigerator according to claim 1 is characterized in that described light guide plate (3) each side is equipped with a circuit board (5).
3, the LED-backlit screen used of refrigerator according to claim 1 is characterized in that described circuit board (5) is several branch roads that comprise that 3～6 LED (8) and current-limiting resistance thereof are connected in series circuit of composition that is connected in parallel, and is installed on the pcb board (9).
4, the LED-backlit screen used of refrigerator according to claim 1 is characterized in that connecting by lead between the described circuit board (5), also is connected with the power supply of backlight screen by lead on the circuit board (5).
5, the LED-backlit screen used of refrigerator according to claim 1 is characterized in that also comprising light-diffusing film (7), and light-diffusing film (7) posts the back side in light guide plate (3).
6, the LED-backlit screen used of refrigerator according to claim 5 is characterized in that the one side seal full equally distributed black round dot of described light-diffusing film (7) towards light guide plate (3).
7, the LED-backlit screen used of refrigerator according to claim 1 is characterized in that also comprising reflective membrane (2), and reflective membrane (2) posts the upper and lower side in light guide plate (3).
8, the LED-backlit screen used of refrigerator according to claim 1 is characterized in that also comprising photomask (6), and photomask (6) posts in the positive both sides of light guide plate (3).
9, the LED-backlit screen used of refrigerator according to claim 8 is characterized in that described photomask (6) begins inwardly to paste from the position of circuit board (5), and the pad pasting width is 15-30mm.
10, the LED-backlit screen of using according to each described refrigerator of claim 1 to 9 is characterized in that described circuit board (5) width is not more than the thickness of light guide plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200597939U CN201429947Y (en) | 2009-07-03 | 2009-07-03 | LED backlight screen for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200597939U CN201429947Y (en) | 2009-07-03 | 2009-07-03 | LED backlight screen for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201429947Y true CN201429947Y (en) | 2010-03-24 |
Family
ID=42033687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200597939U Expired - Lifetime CN201429947Y (en) | 2009-07-03 | 2009-07-03 | LED backlight screen for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201429947Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959040A (en) * | 2010-06-02 | 2011-01-26 | 苏州工业园区胜欣电子有限公司 | Energy-saving television cabinet with advertisement board |
| CN101959041A (en) * | 2010-06-02 | 2011-01-26 | 苏州工业园区胜欣电子有限公司 | Concentrating television cabinet with advertising panel |
| CN102518993A (en) * | 2011-12-16 | 2012-06-27 | 合肥美菱股份有限公司 | Refrigerator and total-reflection honeycomb backlight LED illuminating lamp thereof |
-
2009
- 2009-07-03 CN CN2009200597939U patent/CN201429947Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959040A (en) * | 2010-06-02 | 2011-01-26 | 苏州工业园区胜欣电子有限公司 | Energy-saving television cabinet with advertisement board |
| CN101959041A (en) * | 2010-06-02 | 2011-01-26 | 苏州工业园区胜欣电子有限公司 | Concentrating television cabinet with advertising panel |
| CN102518993A (en) * | 2011-12-16 | 2012-06-27 | 合肥美菱股份有限公司 | Refrigerator and total-reflection honeycomb backlight LED illuminating lamp thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |
|
| CX01 | Expiry of patent term |