Down straight aphototropism mode set and liquid crystal indicator
Technical field
The present invention relates to a kind of straight-down negative (Direct Light Type) module backlight and the liquid crystal indicator that uses this down straight aphototropism mode set.
Background technology
, little power consumption frivolous and brightness advantages of higher because of the liquid crystal indicator tool, and be widely used in the various modernized information equipments.For example: the use of display screens such as mobile phone, PC, personal digital assistant, or as large-screen more than 30 inches or wall-hanging LCD TV.
Usually, because display panels itself is not had an autoluminescence characteristic, need provide a module backlight to provide planar light for this display panels.Module backlight can be divided into marginal ray formula (Edge Light Type) module backlight and down straight aphototropism mode set by the light source position difference.Wherein, down straight aphototropism mode set is applicable to the large display screen more than 30 inches, and marginal ray formula module backlight then is applicable to below 30 inches or the display screen of reduced size.See also Fig. 1 and Fig. 2, Fig. 1 is a kind of structural representation of prior art down straight aphototropism mode set, and Fig. 2 is the schematic top plan view of down straight aphototropism mode set shown in Figure 1.This down straight aphototropism mode set 10 comprises a reflecting plate 12, a diffuser plate 14, a plurality of linear fluorescent tube 16 and a framework 11.This framework 11 is the rectangular configuration of tool one opening (not indicating), and it is used for accommodating this reflecting plate 12, these diffuser plate 14 and these a plurality of linear fluorescent tubes 16.This framework 11 comprises a base plate 112, with four sidewalls 114 of these base plate 112 vertical connections and be positioned at a plurality of fluorescent tube housing piece 116 on the two lateral walls 114.This diffuser plate 14 utilizes two lateral walls 114 carryings of this framework 11 and is fixed on the opening part of this framework 11, and it is used for the emergent ray homogenising with linear fluorescent tube 16.This reflecting plate 12 is arranged on the inside surface of this framework 11, and it is used for the light of this linear fluorescent tube 16 towards these framework 11 outgoing is reflected to this diffuser plate 14, to increase light utilization efficiency.These a plurality of linear fluorescent tubes 16 are fixed by inserting this fluorescent tube housing piece 116.
Though these a plurality of linear fluorescent tubes 16 fixedly are housed in this fluorescent tube housing piece 116, yet for the large scale display device, because its linear fluorescent tube 16 length are long and dimension and weight its diffuser plate 14 is excessive, both all easily away from the avris place because of being subjected to gravity effect and bending or be out of shape, therefore unavoidably need a bracing frame that can either fixing should can support diffuser plate 14 linear 16 whiles of fluorescent tube again.
Seeing also Fig. 3, is a kind of structural representation of prior art bracing frame.This bracing frame is applicable in this down straight aphototropism mode set 10, and it is disposed on this reflecting plate 12 usually.Each bracing frame comprises a plate-shaped base 180, a teat 181 and two " O " shape hole slot 182.This plate-shaped base 180 is arranged on this reflecting plate 12.This teat 181 is similar to and is a triangle, and it extends to these diffuser plate 14 directions from this plate-shaped base 180, is used for supporting this diffuser plate 14.This two " O " shape hole slot 182 is symmetricly set on this plate-shaped base 180 two ends, and it is used for this linear fluorescent tube 16 of fixing from place far away, its end place.
Because the two ends of this linear fluorescent tube 16 are retained on this fluorescent tube housing piece 116, locate to be forced to be fixed in this " O " shape hole slot 182 and its script easily bends, thereby make linear fluorescent tube 16 not be subject to gravity effect and bending.Yet because linear fluorescent tube 16 is forced to fix, when linear fluorescent tube 16 was subjected to external impact, fracture or damaged easily took place in linear fluorescent tube 16, thereby caused the bright dipping poor effect of this down straight aphototropism mode set 10.And for the liquid crystal indicator that uses this down straight aphototropism mode set 10, the linear fluorescent tube 16 impaired poor display of liquid crystal indicator and the problems of maintenance cost costliness of also can causing.
Summary of the invention
In order to solve prior art, be necessary to provide a kind of and can effectively prevent the down straight aphototropism mode set that fluorescent tube is impaired because of the easy impaired not good problem of down straight aphototropism mode set bright dipping that causes of down straight aphototropism mode set fluorescent tube.
In addition, cause the not good problem with the maintenance cost costliness of liquid crystal indicator display effect because of the down straight aphototropism mode set fluorescent tube is easily impaired, also be necessary to provide a kind of and can effectively prevent the liquid crystal indicator that fluorescent tube is impaired in order to solve prior art.
A kind of down straight aphototropism mode set, it comprises a plurality of fluorescent tubes, a diffuser plate and a plurality of bracing frame.This diffuser plate is used for the equalizing light rays with the fluorescent tube outgoing.These a plurality of bracing frames are used for fixing this fluorescent tube and support this diffuser plate, and each bracing frame comprises a main body, at least one lighting tube holding part and a regulating part.This diffuser plate of this body supports.This at least one lighting tube holding part is used for these a plurality of fluorescent tubes of fixing.This regulating part is connected between this at least one lighting tube holding part and this main body, this regulating part comprises that one is positioned at the lever construction that perforation and on this main body runs through this perforation, when fluorescent tube is subjected to external impacts, this lever construction in this perforation corresponding deflection to be used for cushioning the suffered external force of fluorescent tube.
A kind of liquid crystal indicator, it comprises that a display panels and provides the down straight aphototropism mode set of planar light for this display panels.This down straight aphototropism mode set comprises a plurality of fluorescent tubes, a diffuser plate and a plurality of bracing frame.This diffuser plate is used for the equalizing light rays with the fluorescent tube outgoing.These a plurality of bracing frames are used for fixing this fluorescent tube and support this diffuser plate, and each bracing frame comprises a main body, at least one lighting tube holding part and a regulating part.This diffuser plate of this body supports.This at least one lighting tube holding part is used for these a plurality of fluorescent tubes of fixing.This regulating part is connected between this at least one lighting tube holding part and this main body, this regulating part comprises that one is positioned at the lever construction that perforation and on this main body runs through this perforation, when fluorescent tube is subjected to external impacts, this lever construction in this perforation corresponding deflection to be used for cushioning the suffered external force of fluorescent tube.
A kind of down straight aphototropism mode set, it comprises a plurality of fluorescent tubes, one diffuser plate and a plurality of bracing frame, this diffuser plate is used for the equalizing light rays with this fluorescent tube outgoing, these a plurality of bracing frames are used for fixing this fluorescent tube and support this diffuser plate, each bracing frame comprises a main body and at least one lighting tube holding part, this diffuser plate of this body supports, this at least one lighting tube holding part is used for these a plurality of fluorescent tubes of fixing, it is characterized in that: each bracing frame further includes the regulating part that is connected between this at least one lighting tube holding part and this main body, one regulating part all is set between each lighting tube holding part and the main body, this regulating part is a rod shaped structure, this rod shaped structure comprises the bending structure of at least one horizontal curvature, when fluorescent tube was subjected to external impacts, this regulating part was by the suffered external force of its flexible buffering fluorescent tube.
Compared with prior art, be provided with regulating part on the bracing frame of above-mentioned down straight aphototropism mode set and liquid crystal indicator with the suffered external force function of buffering fluorescent tube, thereby avoid the impact of the suffered external force of fluorescent tube, what guarantee down straight aphototropism mode set goes out light effect, the problem that display effect is not good and maintenance cost is expensive that also can avoid liquid crystal indicator to cause because of fluorescent tube is impaired.
Description of drawings
Fig. 1 is a kind of structural representation of prior art down straight aphototropism mode set.
Fig. 2 is the schematic top plan view of down straight aphototropism mode set shown in Figure 1.
Fig. 3 is the perspective view of bracing frame that down straight aphototropism mode set shown in Figure 1 is used.
Fig. 4 is the structural representation of down straight aphototropism mode set first embodiment of the present invention.
Fig. 5 is the schematic top plan view of down straight aphototropism mode set shown in Figure 4.
Fig. 6 is the perspective exploded view of the bracing frame of down straight aphototropism mode set shown in Figure 3.
Fig. 7 is the schematic perspective view after the bracing frame assembling shown in Figure 6.
Fig. 8 is the structural representation that the lever construction of bracing frame shown in Figure 6 longitudinally moves.
Fig. 9 is the structural representation of the lever construction of bracing frame shown in Figure 6 along crosswise movement.
Figure 10 is the perspective view of the bracing frame of down straight aphototropism mode set second embodiment of the present invention.
Figure 11 is the perspective view of the bracing frame of down straight aphototropism mode set the 3rd embodiment of the present invention.
Figure 12 is the structural representation of liquid crystal indicator one better embodiment of the present invention.
Embodiment
See also Fig. 4 and Fig. 5, Fig. 4 is the structural representation of down straight aphototropism mode set first embodiment of the present invention, and Fig. 5 is the schematic top plan view of down straight aphototropism mode set shown in Figure 4.This down straight aphototropism mode set 20 comprises a framework 21, a reflecting plate 22, a plurality of fluorescent tube 23, a plurality of bracing frame 24 and a diffuser plate 25.These a plurality of bracing frames 24 are used for supporting this diffuser plate 25 and fixing these a plurality of fluorescent tubes 23.The part light reflection that this reflecting plate 22 is used for this fluorescent tube 23 is sent is to this diffuser plate 25.This diffuser plate 25 is used for equalizing light rays that this fluorescent tube 23 is sent.This framework 21 is used for accommodating this reflecting plate 22, these a plurality of fluorescent tubes 23, this a plurality of bracing frames 24 and this diffuser plate 25.
This framework 21 is the rectangle of tool one opening, and it comprises a base plate 210, with four sidewalls 212 of these base plate 210 perpendicular abutment and be arranged on a plurality of fluorescent tube housing piece 214 on the two lateral walls 212.This diffuser plate 25 utilizes these four sidewalls, 212 carryings to be fixed on the opening part of this framework 21.This reflecting plate 22 is arranged on the inside surface of this framework 21.The two ends of this fluorescent tube 23 are fixed by inserting this fluorescent tube housing piece 214.These a plurality of bracing frames 24 are fixed on this reflecting plate 22 surfaces.
See also Fig. 6 and Fig. 7, Fig. 6 is the perspective exploded view of the bracing frame 24 of this down straight aphototropism mode set 20, and Fig. 7 is the schematic perspective view after these bracing frame 24 assemblings.
This bracing frame 24 comprises a main body 26 and a lamp tube supporting piece 27.This main body 26 is a conical cylinder, and it comprises a top 260, one and this top 260 bottom 263 and the perforation 265 that are oppositely arranged.These 260 surfaces, top are arc structure, its this diffuser plate 25 of conflicting.This perforation 265 runs through the main body 26 near these bottom 263 1 sides, and vertical (short transverse of main body 26) extends two relative projections 267 on the inwall 266 of this perforation 265 certainly, and the top 2671 of these two relative projections 267 is the conical surface.This lamp tube supporting piece 27 crosses the perforation 265 of this main body 26, and it comprises recessed dish 274, two symmetrically arranged connecting links 276 and two lighting tube holding part 278.This recessed dish 274 is a pie structure, it comprise two relative inner concaves 2741 and one with the side 2742 of these two relative inner concave 2741 edges abut.The recess of these two relative inner concaves 2741 and the 2671 corresponding settings of the top of this projection 267.This two connecting link 276 extends relatively from the side 2742 of this recessed dish 274 respectively, and it is used for connecting this recessed dish 274 and this lighting tube holding part 278.This two lighting tube holding part 278 is used for the semicircular structure of clamping fluorescent tube 23, and it is separately positioned on the end of this connecting link 276.
After the assembling, this recessed dish 274 is arranged in this perforation 265.Two tops 2712 of this two relative projection 271 are two relative inner concaves 2741 of these recessed dishes 274 of butt respectively, this connecting link 276 is arranged on this 265 both sides of boring a hole, the both ends of this fluorescent tube 23 are retained in the fluorescent tube housing piece 214 of this framework 21, and the middle part of fluorescent tube 23 is supported and fixing by this lighting tube holding part 278.Because the top 2671 of these two relative projections 267 is the conical surface, and respectively with two inner concaves, the 2741 butt settings of this recessed dish 274, then this recessed dish 274 can rotate as a rotating shaft with two projections 267, thereby makes this projection 267, this recessed dish 274 and this connecting link 276 common formations one be arranged on the lever construction at these 265 places of boring a hole.
See also Fig. 8 and Fig. 9, Fig. 8 is the structural representation that the lever construction of bracing frame 24 longitudinally moves, and Fig. 9 is the structural representation of the lever construction of this support member 24 along crosswise movement.Generally speaking, because the two ends of fluorescent tube 23 are retained in this fluorescent tube housing piece 214 all the time, it can not shake because of less external force, have only when certain fluorescent tube 23 is subjected to external impacts, the part that this fluorescent tube 23 easily bends shakes, then this lever construction utilizes lever principle that corresponding rotation takes place, as: small deflection laterally and on the longitudinal direction is taking place in (as shown in Figure 8) or horizontal direction (as shown in Figure 9) or while in this perforation 265 along the longitudinal direction, thereby fluorescent tube 23 suffered external impacts are cushioned and adjusting, avoid this fluorescent tube 23 because of stressed excessive the damage, then this lever construction matches with this perforation 265 and constitutes the regulating part of an adjusting fluorescent tube 23 suffered external force.After these fluorescent tube 23 suffered external impacts were removed, this lever construction was replied the equilibrium state for not deflecting again.
The bracing frame 24 of above-mentioned down straight aphototropism mode set 20 is provided with the lever construction that is positioned at main body 26 perforation 265 places and connects fluorescent tube 23 and main body 26; this lever construction can be bored a hole at this certain deflection takes place in 265; make it be able to the effect of buffer protection effectively thereby reach adjusting fluorescent tube 23 suffered external force, avoid taking place because of the fluorescent tube 23 impaired bright dipping poor effect problems of bringing.
Seeing also Figure 10, is the perspective view of the bracing frame of down straight aphototropism mode set second embodiment of the present invention.The bracing frame 44 of this down straight aphototropism mode set comprises a main body 46 and two lamp tube supporting pieces 47.This main body 46 is a conical cylinder, and it comprises the bottom 461 that is oppositely arranged and a top 462 and one and the adjacent side 463 in this top 462 and bottom 461.This bottom 461 can be fixed on the base plate of a reflecting plate or a framework.This top 462 and a diffuser plate connect.This lamp tube supporting piece 47 goes out from 463 horizontal expansions of the side of this main body 46, and it comprises a connecting link 476 and a lighting tube holding part 478.This lighting tube holding part 478 is semicircular structures, and it is used for fixing away from the fluorescent tube of end (figure does not show) part.This connecting link 476 is connected between this main body 46 and this lighting tube holding part 478, it has the kink 4761 of at least one level bending, thereby make this connecting link 476 have pliability, this connecting link 476 is promptly as connecting this fluorescent tube and main body 46 and being used for regulating the stressed regulating part of fluorescent tube.
Because the connecting link 476 of this lamp tube supporting piece 47 is provided with kink 4761, and this kink 4761 goes out from these main body 46 horizontal expansions.When fluorescent tube was subjected to external force, this connecting link 476 utilized its flexible nature with the suffered external force buffering of this fluorescent tube, thereby avoids the stressed damage of fluorescent tube, guarantees the light effect that of this down straight aphototropism mode set.
Seeing also Figure 11, is the perspective view of the bracing frame of down straight aphototropism mode set the 3rd embodiment of the present invention.Bracing frame 24 similar of the bracing frame 64 of this down straight aphototropism mode set and the down straight aphototropism mode set 20 of first embodiment, its difference is: the connecting link 676 of this bracing frame 64 has the kink 6761 of at least one horizontal curvature, thereby alleviates in a lateral direction stressed of this bracing frame 64 more effectively.
Seeing also Figure 12, is the structural representation of liquid crystal indicator one better embodiment of the present invention.This liquid crystal indicator 100 comprises a display panels 110 and a direct-type backlight module 120.This down straight aphototropism mode set 120 can be the down straight aphototropism mode set shown in above-mentioned any embodiment, and itself and this display panels 110 stacked settings are for this display panels 110 provides planar light.
Because above-mentioned down straight aphototropism mode set can effectively be avoided the suffered external impacts of fluorescent tube, guarantee the light effect that of down straight aphototropism mode set, so for the liquid crystal indicator that uses above-mentioned down straight aphototropism mode set, the problem that display effect is not good and maintenance cost is expensive that it also can avoid this liquid crystal indicator 100 to cause because of fluorescent tube is impaired.