CN2546911Y

CN2546911Y - Negative phototropic cover radiating structure

Info

Publication number: CN2546911Y
Application number: CN 02231017
Authority: CN
Inventors: 廖骏吉
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-10
Filing date: 2002-04-10
Publication date: 2003-04-23
Anticipated expiration: 2012-04-10

Abstract

The utility model relates to a backlighting mask cooling structure, which mainly comprises a base, a reflector, a plurality of tube faces and a plurality of lighting tubes; wherein the base is provided with a plurality of cooling holes; a plurality of slots are arranged at the two relative sides of the base; the reflector is tightly adhered to the bottom inside the base; the tube faces are embedded into the slots of the base; a lighting tube slotted hole and at least one radiating pipeline are arranged inside the tube face; the radiating pipeline is communicated with the lighting tube slotted hole. A reflective side is positioned at one side of the tube face surface corresponding to the lighting tube; two ends of the lighting tube are respectively embedded into the lighting tube slotted hole. The heat at the ends of the lighting tube can be eliminated rapidly through the radiating pipeline inside the tube face, so the heat convergence at the ends of the lighting tube can be lowered efficiently; in addition, the heat which is generated by the lighting tube can be eliminated outwards through the cooling holes at the base via the conduction of the reflector, thereby the temperature inside the backlighting mask is lowered, and the radiating effect of the backlighting mask can be realized.

Description

Cover radiator structure backlight

Technical field

The utility model relates to a kind of cover radiator structure backlight.

Background technology

Various LCD (Liquid Crystal Display, LCD) more traditional crt display, have that low radiation, low power consumption, volume are little, the advantage in the multinomial use such as high-res and display frame are continuous, after in addition volume production is made, selling price declines to a great extent, it uses on the demand of notebook computer, desktop computer constantly grows up, and becomes the main flow that market was sold and used to display gradually; In addition, because in light weight, the thin thickness of LCD is at the display of household appliances, various telecommunications product, vehicle computer navigational system and various electronic instrument display boards, its design, use all based on LCD.

LCD itself is not luminous, so liquid crystal screen is shown, the light source that existing LCD adopts is generally a cover structure backlight, again, in order to reduce the thermal energy conduction that luminophor produced in the cover backlight to LCD, reduce the transmittance of LCD, being provided with the lower bank light pipe of heating usefulness in the known cover structure body backlight is light emitting source, as shown in Figure 1, it is the three-dimensional exploded view of known backlit cover, wherein, this fluorescent tube 70 is a parallel arrangement, luminous energy that fluorescent tube 70 is sent is through diffusing light guiding plate 71, makes it be transmitted to light collecting plate 72 comparatively equably the diffusion of luminous energy appropriateness by diffusing light guiding plate 71 again, conducted the light that by light collecting plate 72 and makes the shinny and video picture of the liquid crystal of LCD (not shown) in screen; Produce heat and the heat history volume production is given birth to high temperature because fluorescent tube 70 is luminous in cover backlight is inner, this high-temperature indirect causes that the assembly of LCD damages, shorten serviceable life, also reduces fluorescent tube 70 serviceable life own simultaneously.

For increasing the Acceptable life of the inner fluorescent tube 70 of cover backlight, reduce liquid crystal display assembly produces high temperature because of heat damage, the manufacturer of cover backlight researches and develops hardy invariably, designs, with heat radiation, the cooling that reaches cover backlight, generally speaking, the radiating mode of known cover structure backlight, be to establish heat radiator in over body case group backlight, or radiator fan is set, reach heat radiation and the purpose that reduces temperature, yet general its shortcoming of known radiating mode is:

(a) this over body case group backlight is established heat radiator, is the assembly of setting up in addition, will increase to make to go up cost.

(b) radiator fan is set, though effectively reach the purpose of heat radiation and cooling, radiator fan increases cost, and fan running produces noise.

(c) external again radiator fan is for the structure outward appearance of whole LCD, and unbecoming; Built-in radiator fan occupies the inner space of cover backlight, and inconvenience is beneficial to the arrangement assembling of fluorescent tube, or is unfavorable for the requirement that over body case backlight is thin, also causes cover backlight to produce the shadow region simultaneously, reduces the uniform planar printing opacity quality of cover backlight.Cover on heat radiation, shortcoming that cooling structure produced based on above-mentioned known backlit, cover structure backlight still has necessity of further improvement.

Summary of the invention

First purpose of the present utility model is in that the user is provided a kind of cover radiator structure backlight, by the hot channel of this tube face inside, the heat of lamp tube end is got rid of rapidly, effectively reduce the heat of lamp tube end and concentrate, reach the heat radiation function of the very first time, and the serviceable life of prolonging lamp tube.

Second purpose of the present utility model, the user is being provided a kind of cover radiator structure backlight, is seeing through a plurality of louvres of base, the heat that fluorescent tube produced is outwards being shed by louvre through the reflector conduction, cover temperature inside backlight is reduced, reach the radiating effect of cover backlight.

The 3rd purpose of the present utility model, the user is being provided a kind of cover radiator structure backlight, reflective surface setting by tube face, make the inner light reflection of cover backlight more even, eliminate light shade or dark block that the fluorescent tube end of cover backlight is produced, the uniform in-plane light transmission is provided, reaches better printing opacity quality.

The utility model provides a kind of cover radiator structure backlight, and it mainly includes a base, a reflector, a plurality of tube face and a plurality of fluorescent tube; Wherein this base offers a plurality of louvres, relative two sides of base are provided with plurality of slots, this reflector adhere well to the bottom surface of base inboard, embedding group tube face in the slot of base, this tube face inside offers a fluorescent tube slotted eye and at least one hot channel, this hot channel is communicated in the fluorescent tube slotted eye, and can be made as reflective surface in the face of a side of fluorescent tube in tube face, and two ends of this fluorescent tube embed respectively and are fixedly arranged in the fluorescent tube slotted eye.

Cover radiator structure backlight of the present utility model can provide effective heat radiation, cooling benefit, increases the serviceable life of fluorescent tube, makes the integral planar light transmission of cover backlight more even.

Description of drawings

Fig. 1 is known three-dimensional exploded view;

Fig. 2 is the three-dimensional exploded view for the utility model embodiment;

Fig. 3 is the three-dimensional combination appearance figure for the utility model embodiment;

Fig. 4 is the cross-sectional schematic for the tube face of the utility model embodiment;

Fig. 5 is the combination cross-sectional schematic for the utility model embodiment.Among the figure

1 base, 31 fluorescent tube slotted eyes

11 bottom surfaces, 32 hot channels

33 pairs of chutes of 12 louvres

13 slots, 34 reflective surfaces

14 side plates, 4 fluorescent tubes

141 assembling edge, 5 light guide plate

142 heat extraction holes, 6 light collecting plates

2 reflectors, 70 fluorescent tubes

21 lugs, 71 diffusing light guiding plates

3 tube faces, 72 light collecting plates

Embodiment

Shown in Fig. 2-Fig. 4 embodiment, the utility model is a kind of cover radiator structure backlight, and it mainly includes a base 1, a reflector 2, a plurality of tube face 3 and a plurality of fluorescent tube 4; Wherein:

The bottom surface of this base 1 offers a plurality of louvres 12, relative two sides of base 1 bottom surface 11 are provided with plurality of slots 13, be provided with side plate 14 around the base 1, wherein two opposing sideplates 14 upper limbs outwards, upwards are bent to form assembling edge 141, and two side plates 14 can be provided with a plurality of heat extractions hole 142 in addition.

This reflector 2 is sheet, and its relative dual side-edge has extended more than one lug 21, and this lug 21 is corresponding to slot 13 openings of base 1, and reflector 2 is by lug 21 location and closely attach the bottom surface 11 that is incorporated into base 1 inboard.

These a plurality of tube faces 3, generally be a rectangle block, its cross section shape is corresponding to the cross section shape of base 1 slot 13, tube face 3 embedding groups are in the slot 13 of base, with reference to shown in Figure 4, tube face 3 inside offer a fluorescent tube slotted eye 31 and at least one hot channel 32, and these fluorescent tube slotted eye 31 sides can be offered a pair of chute 33, and this hot channel 32 is communicated in fluorescent tube slotted eye 31 and this is to chute 33; In addition, can be made as reflective surface 34 in the side that tube face 3 is faced fluorescent tube 4, these reflective surface 34 summarys are an inclined-plane.

These a plurality of fluorescent tubes 4 are elongated tubular product such, and two ends of fluorescent tube 4 embed respectively in the fluorescent tube slotted eye 31 that is fixedly arranged on tube face 3.

When the utility model was assembled in the LCD (not shown), a suitable distance was assembled light guide plate 5 at interval in fluorescent tube 4 tops, and these light guide plate 5 sides are cross-placed on the assembling edge 141 of base 1 side plate 14, or form in light guide plate 5 upper set intersection tabula rasas 6 again.

The utility model is implemented, when fluorescent tube 4 provides light source, the heat that it produced is through reflector 2 conduction, a plurality of louvres 12 by base 1 bottom surface 11 outwards shed, cover temperature inside backlight is reduced, refer again to Fig. 5, assembled sectional view for the utility model embodiment, hot channel 32 by these tube face 3 inside, the heat of fluorescent tube 4 ends is got rid of rapidly, and this heat can shed via the heat extraction hole 142 of side plate 14 or the slit of 14 of light guide plate 5 and side plates is got rid of, and effectively reduces the heat concentration phenomenon of fluorescent tube 4 ends, reduce temperature, 4 serviceable lifes of prolonging lamp tube, simultaneously, these fluorescent tube slotted eye 31 sides to chute 33, can strengthen the hot-air convection speed of hot channel 32, improve radiating efficiency.

In addition,, make the inner light reflection of cover backlight more even, eliminate light shade or dark block that tube face 3 is produced, the uniform in-plane light transmission is provided, reach better printing opacity quality by the reflective surface 34 of tube face 3.

In sum, the utility model provides the user a kind of light shield reflection unit, utilize the water chestnut mirror that the light that light and reflecting plate reflected of fluorescent tube emission is modulated its sensing again, be sent to the diffusing light guiding plate in this two tubes gap effectively, eliminate the shade tape that the fluorescent tube gap is produced, have novelty, practicality and industrial utilization really.

Below the utility model is described in detail, only the above person only is preferred embodiment of the present utility model, when not limiting scope of the present utility model.Be that all equalizations of doing according to the utility model application range change and modify etc., all should still belong in the patent covering scope of the present utility model.

Claims

1. cover radiator structure backlight, it mainly includes a base, a reflector, a plurality of tube face and a plurality of fluorescent tube; It is characterized in that:

This base, relative two sides of its bottom surface are provided with plurality of slots, are provided with side plate around the base;

This reflector is sheet, and reflector closely attaches the bottom surface that is incorporated into the base inboard;

These a plurality of tube faces, generally be a rectangle block, its cross section shape is corresponding to the cross section shape of base slot, and tube face embedding group is in the slot of base, tube face inside offers a fluorescent tube slotted eye and at least one hot channel, and this hot channel is communicated with the fluorescent tube slotted eye;

These a plurality of fluorescent tubes are elongated tubular product such, and two ends of fluorescent tube embed respectively in the fluorescent tube slotted eye that is fixedly arranged on tube face.

2. cover radiator structure backlight as claimed in claim 1 is characterized in that the bottom surface of this base offers a plurality of louvres.

3. cover radiator structure backlight as claimed in claim 1 is characterized in that the side plate of this base offers the heat extraction hole.

4. cover radiator structure backlight as claimed in claim 1 is characterized in that the relative dual side-edge of this reflector has extended more than one lug, and this lug is corresponding to the slot of base;

Reflector is positioned the slot of base and closely attaches the bottom surface that is incorporated into the base inboard by lug.

5. cover radiator structure backlight as claimed in claim 1 is characterized in that the fluorescent tube slotted eye side of this tube face can be offered a pair of chute, and this is communicated in hot channel to chute.

6. cover radiator structure backlight as claimed in claim 1 is characterized in that this tube face is made as reflective surface in the face of a side of fluorescent tube.

7. cover radiator structure backlight as claimed in claim 6, the reflective surface that it is characterized in that this tube face is an inclined-plane.