CN2434586Y

CN2434586Y - Light hood temp control indicator for freezing air conditioner

Info

Publication number: CN2434586Y
Application number: CN 00242514
Authority: CN
Inventors: 许德滨
Original assignee: TAIWAN DEYI TEMPERATURE CONTROL TECHNOLOGY Co Ltd
Current assignee: TAIWAN DEYI TEMPERATURE CONTROL TECHNOLOGY Co Ltd
Priority date: 2000-07-21
Filing date: 2000-07-21
Publication date: 2001-06-13
Anticipated expiration: 2010-07-21

Abstract

The utility model relates to a light hood back light temperature control indicator for a freezing air conditioner. The utility model mainly characterized in that a plurality of inclined planes are formed on the inner bottom face of a light hood box at the periphery of the light source, and the inclined planes present the color which does not absorb the light; simultaneously, the bottom end of a liquid-crystal display plate is additionally provided with a diffusion plate so that the light source generated by a small number of light sources can be reflected onto the diffusion plate via the inclined planes, the light source is diffused via the diffusion plate and is evenly penetrated via the surface of the liquid-crystal display plate to achieve the efficacies of even brightness, little power expenditure and convenient visual reading.

Description

Freezing air conditioner light shield backlight type temperature control display

The utility model relates to a kind of light shield backlight type display, relates to particularly that a kind of display brightness is even, power consumption is little, looks and read the display of freezing air conditioner light shield backlight type temperature control easily.

General freezing equipment, on air-conditioning system or its remote controller LCD panel is arranged all, to show the air-supply of refrigerating and air conditioning system, cold air, temperature ... Deng state, as Fig. 1, shown in 2, general light shield backlight type display 1 comprises a substrate 11, one is arranged at the box for photomask 12 on the substrate 11, one is located on the substrate 11 and extends to light source 13 and a plurality of LCD panel 14 that is arranged at box for photomask 12 tops and is positioned at light source 13 tops in the box for photomask 12 by the perforate 120 of offering at the bottom of box for photomask 12 boxes, when insufficient light, light source 13 is appeared to the surface by the back side of LCD panel 14 that to arrive LCD panel 14 luminous to show the effect of refrigerating and air conditioning system information on it.

But the defective value that above-mentioned light shield backlight type display 1 still has what follows in actual use must improve:

1. display brightness inequality: since the light source of this light source 13 be by any towards around disperse, when being applied in, this light shield backlight type display 1 has larger area LCD panel 14 when (as freezing equipment or air-conditioning system display screen etc.), with regard to the situation that existing substrate 11 designs only supply 13 settings of minority light source, not enough light source 13 will cause the light source light and shade inequality that is appeared by LCD panel 14 surfaces, and the refrigerating and air conditioning system information that causes showing on the LCD panel 14 is not easy to read.

2. electrical source consumption is big: as previously mentioned, if improve the shortcoming of this display brightness inequality, though can add light source 13 to increase brightness, but this will change existing substrate 11 designs on the one hand, cause the complexity in the manufacturing, the quantity of light source 13 increases on the one hand, and power consumption will be increased.

3. read inconvenience: as mentioned above, because the light source 13 of a greater number will make power consumption increase, therefore use go up can only be when or cold air setting value change freezing towards control (as shake the control back by remote controller) direction of just driving LCD panel 14 shinny demonstrations design, and light source 13 must be able to extinguish automatically, and can't make this LCD panel 14 be in the state of keeping shinny demonstration at any time, so under situation at insufficient light, the residing state of LCD panel 14 demonstration at any time of freezing equipment or air-conditioning system itself causes the user to read the inconvenience of refrigerating and air conditioning system information then.

Moreover, though the design of cold light display is arranged on the market, it does not have the setting of box for photomask and light source, but establish a cold light panel in the LCD panel bottom, by the electroluminescence effect of cold light panel, make LCD panel can keep the state of shinny demonstration at any time, but the price height of this cold light panel, and the life-span is short, therefore still can produce defectives such as manufacturing cost raising and reduction in service life, so also not satisfactory.

The purpose of this utility model is to provide a kind of and reaches that display brightness is even, power consumption is little, read the display of freezing air conditioner light shield backlight type temperature control easily.

Freezing air conditioner light shield backlight type temperature control display of the present utility model comprises a substrate, one is arranged at the box for photomask on the substrate, a plurality ofly be located on the substrate and extend to the LCD panel that light source and in the box for photomask is arranged at the box for photomask top and is positioned at the light source top, it is characterized in that, box for photomask inner bottom surface around this light source forms a plurality of inclined-planes, and described inclined-plane is the not color of extinction, simultaneously, this LCD panel bottom is provided with a diffuser plate in addition, the light source that the light source of minority is sent can reflex on the diffuser plate by described inclined-plane, via this diffuser plate light source is spread again, and evenly appear by the surface of LCD panel, it is even to reach brightness, power consumption is little, look and read effect easily.

Below by most preferred embodiment and accompanying drawing freezing air conditioner light shield backlight type temperature control display of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the schematic top plan view of general light shield backlight type display.

Fig. 2 is the cross-sectional schematic of being got along the straight line 1-1 among Fig. 1.

Fig. 3 is the side-looking generalized section of the utility model preferred embodiment.

Fig. 4 is the cross-sectional schematic of being got along the straight line 3-3 among Fig. 3.

As Fig. 3, shown in 4, the light shield backlight type temperature control display 2 of present embodiment comprises a substrate 21, one is arranged at the box for photomask 22 on the substrate 21, a plurality ofly be located on the substrate 21 and extend to light source 23 in the box for photomask 22, one LCD panel 24 and that is arranged at box for photomask 22 tops and is positioned at light source 23 tops is arranged at the diffuser plate 25 of LCD panel 24 bottoms, LCD panel is divided into transparent usually, translucent and opaque etc. three kinds, and the utility model limits the use of on translucent and transparent two kinds of fields, simultaneously, this light source 23 can be light emitting diode, and have red, green two kinds of colors not, and offer a plurality of perforates 220 at the bottom of making the box of this box for photomask 22, this light source 23 is then stretched by perforate 220 and is placed box for photomask 22, box for photomask 22 inner bottom surfaces around the described again perforate 220 form a plurality of smooth ramp 221, and described inclined-plane 221 is to be class as the color of extinction not such as white or light color system, moreover, this diffuser plate 25 forms rough surface towards the one side of light source 23, and forms smooth surface towards the one side of LCD panel 24.

So, the light source that the light source 23 of the light shield backlight type temperature control display 2 of present embodiment sends, but some direct irradiations are in diffuser plate 25, and part that can't direct projection also can be by the reflex on described inclined-plane 221 and is exposed to equally on the diffuser plate 25, moreover, diffuser plate 25 can be spread irradiation light source thereon by coarse one side, and through diffuser plate 25 level and smooth one sides and evenly by appearing on the surface of LCD panel 24, reach the effect that LCD panel 24 uniformly light-emittings show, if it is applied to freezing equipment, on the display screens of air-conditioning system or its remote controller, then can be when insufficient light, it is luminous to show the effect of refrigerating and air conditioning system information on it to reach LCD panel 24.

In sum, light hood temp control indicator for freezing air conditioner of the present utility model has effect as described later:

1. display brightness is even: because light shield backlight type temp control indicator 2 of the present utility model, its light source 23 sends Light source, can be by the reflex on described inclined-plane 221 and expose on the diffuser plate 25, simultaneously, by diffuser plate 25 can be spread irradiation light source thereon, evenly appeared by the surface of LCD panel 24 again, therefore, namely The utility model is used in such as freezing equipment or air-conditioning system display screens etc. has the larger area LCD panel In the time of on 24, only minority light source 23 need be set, can by reflection and diffusion, LCD panel 24 be produced all The effect of even luminescence display, and avoid the light source light and shade inequality that appears, that guarantees to show on the LCD panel 24 is freezing Air-conditioning system information can be looked easily and be read.

2. electrical source consumption is little: described before continuous, because 2 need of light shield backlight type temp control indicator of the present utility model are established Put minority light source 23, can reach the effect that LCD panel 24 uniformly light-emittings show, it is existing to need not on the one hand change Substrate 21 designs, then the quantity because of light source 23 is few on the one hand, satisfies again consumption capable of reducing power source.

3. look and read facility: be still continuous aforementioned, because more a spot of light source 23 consumptions capable of reducing power source, simultaneously, if with the light emitting diode is that light source 23 is provided with, because of light emitting diode is compared the cheap of cold light panel, and the life-span is long, so using in the design, refrigerating and air conditioning can make this LCD panel 24 be in the state of keeping shinny demonstration in the machine operation at any time, the LCD panel 24 that makes freezing equipment or air-conditioning system is under the situation of insufficient light, the user can look the refrigerating and air conditioning system information of reading by demonstration on the LCD panel 24 at any time, to understand the state of freezing equipment or air-conditioning system, further, also can utilize light sources of different colors 23 exchanges luminous on the circuit design, to be used to show the different conditions of air-conditioning system, to be air-conditioning system can make under supply cold air state green light source 23 is shinny and make LCD panel 24 shows green, under supply heating installation state, can make red light source 23 shinny and make LCD panel 24 manifest redness, in air-supply and except that green under the wet condition in then making, red light source 23 is simultaneously shinny, colour mixture and that LCD panel 24 is manifested is orange, therefore, can save the setting of the third colour light source 23 in the design, as long as and the user distinguishes that the color of the LCD panel 24 of looking air-conditioning system manifests, can know the state that air-conditioning system is now located fast, this has more promoted the convenience in the air-conditioning system use again.

Claims

1. freezing air conditioner light shield backlight type temperature control display, comprise a substrate, and be arranged at box for photomask on the substrate, a plurality ofly be located on the substrate and extend to the LCD panel that light source and in the box for photomask is arranged at the box for photomask top and is positioned at the light source top, it is characterized in that:

Box for photomask inner bottom surface around this light source forms a plurality of inclined-planes, and described inclined-plane is the not color of extinction;

This LCD panel bottom is provided with a diffuser plate, and the light source that described inclined-plane can be sent light source reflexes on the diffuser plate, and this diffuser plate then can spread light source.

2. freezing air conditioner light shield backlight type temperature control display as claimed in claim 1, it is characterized in that: described light source is a light emitting diode.

3. freezing air conditioner light shield backlight type temperature control display as claimed in claim 1 is characterized in that described light source is divided into two kinds of different colours.