Patent Description:
A liquid crystal display has played a leading role in the current flat panel display market due to the characteristics of small size, low power consumption and low radiation. In the liquid crystal display, since a liquid crystal does not emit light, it merely plays a role in controlling a ray, and therefore, a BLU (Back Light Unit) is required to be configured for a liquid crystal display panel in order to display an image on a screen of the liquid crystal display.

Generally speaking, the BLU may be divided into a side-entry-type BLU and a direct-light-type BLU according to different light source distribution positions in the BLU, wherein a light source in the side-entry-type BLU is located at the side surface of the display panel, and a light source in the direct-light-type BLU is located at the bottom of the display panel.

As shown in <FIG> in which a side-entry-type display in the existing technology is shown, the side-entry-type display includes an outer frame <NUM> and a display module <NUM> disposed in the outer frame <NUM>, the display module <NUM> further includes a mounting frame <NUM> and a light bar <NUM> arranged at an inner side of the mounting frame <NUM> and further includes a reflector plate <NUM>, a light guide plate <NUM>, an optical film <NUM> and liquid crystal glass <NUM> sequentially arranged on the mounting frame <NUM> from bottom to top, the liquid crystal glass <NUM> is connected with a control component for controlling the liquid crystal glass <NUM> to display a frame, and the control component includes a circuit board <NUM> and a wire <NUM>. The front of the outer frame <NUM> is provided with protective glass <NUM>, and the protective glass <NUM> is arranged corresponding to the liquid crystal glass <NUM>. The control component is generally arranged in a way of bypassing the side of the mounting frame <NUM> from the front side of the mounting frame <NUM> and attaching to the rear side of the mounting frame <NUM>, in this way, the circuit board <NUM> is attached to the rear side of the mounting frame <NUM>, and the wire <NUM> connected with the liquid crystal glass <NUM> coats the mounting frame <NUM>. On the one hand, due to the coating and blocking of the wire <NUM>, the heat radiating effect of the display is relatively poor, and on the other hand, due to the coverage of the outer frame <NUM>, the heat radiating effect of the display is also relatively poor, particularly, the temperature of the overall display is overhigh under the condition of high brightness, furthermore, the service life of the light bar is shortened, the light bar needs to be replaced frequently, and thus, the use cost of the display is increased.

<CIT> discloses a fully sealed display unit, comprising: a mounting frame formed by enclosing and splicing a plurality of mounting bars, each two adjacent mounting bars having a sealed connection, a front side opening and a rear side opening being formed on the mounting frame, and a mounting structure being formed on the inner side of the mounting frame; a rear panel arranged at the rear side opening and having a sealed connection with the mounting frame; protective glass arranged at the front side opening and having a sealed connection with the mounting frame, and a sealed space being formed inside the protective glass, the mounting frame, and the rear panel; and a display module mounted on the mounting frame by means of the mounting structure.

<CIT> describes a liquid crystal display device having a light guide plate that is capable of providing improved liquid crystal display performance without generating a striped image. The liquid crystal display device includes a light guide plate, which illuminates a liquid crystal panel from its rear surface, and light sources, which shed a light ray on the light guide plate. The rear surface of the light guide plate is separated into a plurality of rear surface divisions by concave grooves. The light sources can adjust the brightness of each rear surface division.

The purpose of the present invention is to provide a display device to overcome defects in the existing technology and solve the problems in an existing side-entry-side display that the overall heat radiating effect of the display is relatively poor, the service life of a light bar is shortened and the use cost of the display is increased due to arrangement ways of a circuit board and a wire thereof and package of an outer frame.

A technical solution for achieving the above-mentioned purpose is that:
The present invention provides a display device as defined in claim <NUM>.

According to the display device provided by the present invention, the heat radiating structures are formed on the mounting frame to radiate heat of the display module, and the outer frame is provided with the heat radiating outlets by which the heat radiating structures communicate with the outside, so that the heat of the display module is directly radiated to the outside by virtue of the heat radiating structures, the heat radiating effect is improved, and the problem of relatively poor heat radiating effect caused by shielding of a wire and a circuit board and package of an outer frame in an existing side-entry-side display is solved. Due to the adoption of the heat radiating structures of the display device, the overall heat radiation effect of the display device is improved, the service life of each functional board (particularly a light bar serving as a heat source) in the display module is guaranteed, and the problem that the use cost is increased due to frequent replacement of the functional board is avoided. The heat radiating structures of the display device are formed on the mounting frame, so that the heat radiating structures may be located on a same plane with the mounting frame of the display module without affecting an overall thickness of the display device, and furthermore, the display device may conform to a design concept of thinning as a whole.

On the display device provided by the present invention at least parts of the heat radiating structures extend from the heat radiating outlets to an outer side of the outer frame.

A further improvement on the display device provided by the present invention lies in that the heat radiating structures are side frames of the outer frame.

A further improvement on the display device provided by the present invention lies in that the display module further includes a control component, and the control component is approximately spread along an arrangement direction of the heat radiating structures.

A further improvement on the display device provided by the present invention lies in that the heat radiating structures are located at an outer side of the control component.

A further improvement on the display device provided by the present invention lies in that the display module further includes an extension section, a first end of the extension section is connected to the mounting frame, a second end of the extension section extends in a direction away from the mounting frame, and the heat radiating structures are formed on the second end of the extension section.

A further improvement on the display device provided by the present invention lies in that the heat radiating pipelines are vertically arranged.

A further improvement on the display device provided by the present invention lies in that wall surfaces of the heat radiating pipelines are provided with heat radiating fins.

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Referring to <FIG>, the present invention provides a display device for solving a heat radiation problem of an existing display. The display device provided by the present invention may be a double-sided display device or a single-sided display device. According to the display device provided by the present invention, heat radiating structures are formed on a mounting frame, and heat radiating outlets are formed in an outer frame to ensure that the heat radiating structures communicate with the outside, so that a heat radiating effect of the display device is improved, the display device may be fabricated with high brightness, and the display device may also conform to a design concept of thinning as a whole. The display device provided by the present invention is described below in combination with accompanying drawings.

Referring to <FIG> in which a sectional view of one side in a first embodiment of a display device provided by the present invention is shown, a structure of the display device provided by the present invention is described below in combination with <FIG>.

As shown in <FIG>, a display device <NUM> provided by the present invention includes an outer frame <NUM> and a display module <NUM> disposed in the outer frame <NUM>, and sides of the outer frame <NUM> are provided with heat radiating outlets <NUM>; and the display module <NUM> includes a mounting frame <NUM>, heat radiating structures <NUM> corresponding to the heat radiating outlets <NUM> are formed on the mounting frame <NUM>, and the heat radiating structures <NUM> communicate with the outside by virtue of the heat radiating outlets <NUM>.

The heat radiating structures <NUM> communicate with the outside by virtue of the heat radiating outlets <NUM> formed in the sides of the outer frame <NUM>, and the display module <NUM> is cooled by virtue of heat exchange between outside air and the heat radiating structures <NUM>, so that a good heat radiating effect is achieved, an overhigh temperature inside the display module <NUM> is avoided, accordingly, a service life of the display module <NUM> is also prolonged, and requirements for high brightness and thinning of the display module <NUM> are also met.

In one specific embodiment, the heat radiating structures <NUM> are completely disposed in the outer frame <NUM> and are arranged close to the heat radiating outlets <NUM>.

In one specific embodiment, at least parts of the heat radiating structures <NUM> extend from the heat radiating outlets <NUM> to an outer side of the outer frame <NUM>. Parts of the heat radiating structures <NUM> are guided to the outer side of the outer frame <NUM>, so that parts of the heat radiating structures <NUM> are directly exposed to outside to exchange heat with the outside air, and furthermore, the heat radiating effect is improved.

In one specific embodiment, a plurality of heat radiating outlets <NUM> are arranged in the outer frame <NUM> and are distributed at the sides of the outer frames <NUM> at intervals.

In one specific embodiment, the sides of the outer frame <NUM> are provided with side frames, as shown in combination with <FIG>, the side frames <NUM> are provided with heat radiating outlets of which lengths are adapted to those of the heat radiating structures <NUM>, and parts of ends of the heat radiating structures <NUM> extend out of the heat radiating outlets and are disposed at the outer side of the outer frame <NUM>.

In one specific embodiment, as shown in <FIG> and <FIG>, the heat radiating structures <NUM> are the side frames of the outer frame <NUM>. Since the heat radiating structures <NUM> are directly used as the side frames of the outer frame <NUM>, on the one hand, the structure of the display device is simplified, namely the side frames at two sides of the outer frame <NUM> are omitted and are directly replaced with the heat radiating structures <NUM>; and on the other hand, the heat radiating structures <NUM> serving as the side frames may be directly and completely exposed to outside, so that heat radiating efficiency is increased.

According to the invention, as shown in <FIG> and <FIG>, the heat radiating structures <NUM> are hollow heat radiating pipelines <NUM>, and two ends of the heat radiating pipelines <NUM> are provided with openings <NUM> communicating with inside and outside air.

Insides of the heat radiating pipelines <NUM> are hollow, and the two ends of the heat radiating pipelines <NUM> are provided with the openings communicating with the insides, so that the insides of the heat radiating pipelines <NUM> communicate with the outside air through the openings, heat (the heat is mainly from a light bar inside the display module) generated by the display module <NUM> is transferred to the heat radiating pipelines <NUM> through the mounting frame <NUM>, so that a temperature of air inside the heat radiating pipelines <NUM> is raised, while a temperature of the outside air is relatively low, furthermore, the air rapidly convects along the heat radiating pipelines <NUM> under an action of a density difference, namely a chimney effect is generated, a phenomenon of enhanced convection of the air inside the heat radiating pipelines <NUM> is caused to realize rapid heat radiation for the mounting frame <NUM> and a functional board, and thus, the heat radiating effect is improved.

In one specific embodiment, the heat radiating pipelines <NUM> are vertically arranged. Preferably, lengths of the heat radiating pipelines <NUM> are consistent with a length of the mounting frame <NUM>.

Two opposite sides of the mounting frame <NUM> are provided with the heat radiating pipelines <NUM>, and air convection is formed by virtue of the chimney effect, so that the heat radiating effects of the mounting frame and the functional board are improved.

In one specific embodiment, as shown in <FIG> and <FIG>, in order to improve the heat radiating effect of the heat radiating pipelines <NUM>, wall surfaces of the heat radiating pipelines <NUM> are provided with heat radiating fins <NUM>. The heat radiating fins <NUM> may be arranged on inner wall surfaces of the heat radiating pipelines <NUM>, or outer wall surfaces of the heat radiating pipelines <NUM> or both the inner wall surfaces and the outer wall surfaces of the heat radiating pipelines <NUM>. The heat radiating effects of the heat radiating pipelines <NUM> may be improved by virtue of the heat radiating fins <NUM>.

In one specific embodiment, as shown in <FIG> and <FIG>, the display module <NUM> further includes a control component <NUM>, and the control component <NUM> is approximately spread along an arrangement direction of the heat radiating structures <NUM>. Compared with an existing structure as shown in <FIG>, namely an arrangement way that the control component coats and shields the mounting frame, the control component <NUM> of the display device provided by the present invention is spread along the arrangement direction of the heat radiating structures <NUM> after being guided out of the display module <NUM>, so that the control component <NUM> may not coat or block the heat radiating structures <NUM>, a heat radiating function is prevented from being affected, and the heat radiating effect is improved.

Further, as shown in <FIG>, <FIG> and <FIG>, the control component <NUM> includes a PCB <NUM> (Printed Circuit Board) and a COF <NUM> (Chip On Flex or Chip On Film) connected with the PCB <NUM>, and the COF <NUM> includes a wire and a chip arranged on the wire. The control component <NUM> is configured to control the frame display of a functional board <NUM> in the display module <NUM>. According to the display module <NUM> provided by the present invention, the PCB <NUM> and the COF <NUM> are directly spread along the arrangement direction of the heat radiating structures <NUM> so that influences of the arrangement of the PCB <NUM> and the COF <NUM> to a heat transfer path is avoided, the heat radiating structures <NUM> are directly formed on the mounting frame <NUM> to ensure that heat generated by the functional board in the mounting frame <NUM> may be directly transferred to the heat radiating structures <NUM> through the mounting frame and is further radiated through the heat radiating structures <NUM>, so that the heat radiation for the functional board <NUM> is realized, and the heat radiating effect is guaranteed.

In one specific embodiment, as shown in <FIG> and <FIG>, the display module <NUM> further includes an extension section <NUM>, a first end of the extension section <NUM> is connected to the mounting frame <NUM>, a second end of the extension section <NUM> extends in a direction far away from the mounting frame <NUM>, and the heat radiating structures <NUM> are formed on the second end of the extension section <NUM>. The heat radiating structures <NUM> are guided to an outer side of the mounting frame <NUM> by virtue of the arranged extension section <NUM>, so that influences of the control component <NUM> to the heat radiating structures <NUM> may be avoided, and the heat radiating effect of the heat radiating structures <NUM> may be improved.

Further, the second end of the extension section <NUM> extends in the direction far away from the mounting frame <NUM> to an outer side of the control component <NUM>, and furthermore, the heat radiating structures <NUM> formed on the second end of the extension section <NUM> are located at the outer side of the control component <NUM>, so that the control component may not affect the heat radiating effects of the heat radiating pipelines <NUM> of the heat radiating structures <NUM>, and the problem of heat radiation shielding and blocking of the control component in the existing display is solved.

Furthermore, corresponding to the control component <NUM>, the extension section <NUM> is provided with an accommodating slot <NUM> for accommodating the control component <NUM>. Since the control component is accommodated by the accommodating slot <NUM>, the control component is hidden inside a structure to avoid affecting a thickness of the structure of the display device <NUM>, so that the display device <NUM> may conform to the design concept of thinning.

In a first embodiment as shown in <FIG>, a display device provided by the present invention is displayed as a single-sided display device, the display device <NUM> includes a display module <NUM>, an outer frame <NUM> includes a front frame, a rear frame, a top frame and a bottom frame which are spliced to form a hollow square frame, heat radiating outlets are formed in two sides of the square frame, and heat radiating structures <NUM> serving as side frames are mounted at the heat radiating outlets, so that the two heat radiating structures <NUM> form the outer frame <NUM> together with the front frame, the rear frame, the top frame and the bottom frame. Heat radiating holes are formed in both the top frame and the bottom frame so as to further radiate heat inside the outer frame <NUM>. The front frame is provided with protective glass corresponding to liquid crystal glass <NUM> of the display module <NUM>, and thus, not only may a display frame of the liquid crystal glass <NUM> be watched, but also an effect of protecting the liquid crystal glass <NUM> may be achieved. The display module <NUM> includes a functional board <NUM>, the functional board <NUM> includes a light bar <NUM>, an optical film <NUM>, a reflector plate <NUM>, a light guide plate <NUM> and the liquid crystal glass <NUM>, the light bar <NUM> is attached to an inner side of the mounting frame <NUM>, the liquid crystal glass <NUM>, the optical film <NUM>, the light guide plate <NUM> and the reflector plate <NUM> are sequentially arranged on the mounting frame <NUM> from front to back, and the mounting frame <NUM> is provided with corresponding mounting structures for mounting the liquid crystal glass <NUM>, the optical film <NUM>, the light guide plate <NUM> and the reflector plate <NUM>. The light guide plate <NUM> is arranged corresponding to a lamp source on the light bar <NUM>. One side, close to the bottom frame, on the reflector plate <NUM> is provided with a reinforcing plate <NUM> for improving the structural strength and stability of the reflector plate <NUM> and the display module <NUM>. Preferably, the reinforcing plate <NUM> is an aluminum plate.

In the first embodiment, the heat radiating structures <NUM> and the mounting frame <NUM> are integrally molded. In the present embodiment, only one side is provided with a control component <NUM>, and the side where the control component <NUM> is located is provided with the heat radiating structures <NUM>. The other side (one side opposite to the control component <NUM>) of the display module <NUM> may be provided with heat radiating structures, or may not be provided with the heat radiating structures and is only provided with a mounting frame.

In a second embodiment, as shown in <FIG>, a display device <NUM> is a double-sided display device and includes two display modules, namely a display module <NUM> and a display module <NUM>' arranged back to back, a structure of the display module <NUM>' is same as that of the display module <NUM>, but functional boards of the display module <NUM> and the display module <NUM>' are arranged in a mirroring manner. A structure of an outer frame <NUM> in the display device <NUM> in the second embodiment is same as that of the outer frame <NUM> of the display device <NUM> in the first embodiment, but a rear frame of the outer frame <NUM> in the second embodiment is also provided with protective glass, so that a frame may be displayed in both a front frame and the rear frame. The display module <NUM> is mounted on a functional board <NUM> at an inner side of a mounting frame <NUM>, the functional board <NUM> includes a light bar <NUM>, an optical film <NUM>, reflector plates <NUM>, a light guide plate <NUM> and liquid crystal glass <NUM>, and an arrangement way of the functional board <NUM> is same as that in the first embodiment. A difference lies in that a reinforcing block <NUM> is arranged between the two reflector plates and is supported between the two reflector plates, and an end of the reinforcing block <NUM> abuts against the corresponding light bar, so that the reinforcing block <NUM> also plays a role in fixing the light bar. The front frame and the rear frame of the outer frame <NUM> are fixedly connected with the mounting frame <NUM> of the display module <NUM> by virtue of clamping pieces <NUM>.

In the second embodiment, ends of the heat radiating structures <NUM> serving as side frames of the outer frame <NUM> are exposed to outside, a plurality of strip-shaped grooves are formed in end surfaces of the heat radiating structures <NUM>, and heat radiating efficiency of the heat radiating structures <NUM> are increased by virtue of the grooves. In the second embodiment, the heat radiating structures <NUM> may be integrated or mutually spliced and connected with the mounting frame <NUM>. Further, the sides, close to a control component <NUM>, of the heat radiating structures <NUM> are provided with an accommodating slot for accommodating the control component <NUM>.

In a third embodiment, as shown in <FIG>, different from the first embodiment and the second embodiment, the third embodiment is characterized in that an outer frame <NUM> is provided with side frames <NUM>, heat radiating outlets allowing ends of heat radiating structures <NUM> to extend out are formed in the side frames <NUM>, and parts of the ends of the heat radiating structures <NUM> are directly exposed to outside after extending out of the heat radiating outlets.

In a fourth embodiment, as shown in <FIG> and <FIG>, the heat radiating structures <NUM> are formed at the second end of the extension section <NUM>, namely the heat radiating structures <NUM> are located at the outer side of the control component <NUM>. Since the heat radiating structures <NUM> are located at the outer side of the control component <NUM>, and accordingly, the heat radiating pipelines <NUM> are also located at the outer side of the control component <NUM>. In other words, the heat radiating pipelines <NUM> are located at the side, far away from the mounting frame <NUM>, of the control component <NUM>, and therefore, it is beneficial to the realization of heat radiation for the functional board in the display module <NUM> due to the air convection of the heat radiating pipelines <NUM> at the outer side of the mounting frame <NUM>. As shown in combination with <FIG>, in the fourth embodiment, the display device <NUM> is a double-sided display device, the extension section <NUM> is provided with accommodating slots <NUM> corresponding to two display modules, and notches allowing the COF <NUM> of the control component <NUM> to penetrate are formed in corresponding surface of the mounting frame <NUM>, so that parts corresponding to the COF <NUM> are disposed in the notches, and the PCB <NUM> is guided into the accommodating slots <NUM>. Due to the adoption of the above-mentioned structure, the display device <NUM> not only may meet the requirement for thinning, but also has an excellent heat radiating effect, the control component <NUM> horizontally extends and does not generate heat radiation shielding or blocking influences to the mounting frame <NUM> and the heat radiating structures <NUM>, and thus, the heat radiating structures <NUM> may perform effective heat exchange on the mounting frame <NUM> and the two display modules so as to achieve a relatively good heat radiating effect.

In the fourth embodiment, the heat radiating structures <NUM> and the mounting frame <NUM> are integrally molded. Namely the heat radiating structures <NUM> are molded on the outer side surface of the mounting frame <NUM>. In another preferable embodiment, the heat radiating structures <NUM> and the mounting frame <NUM> are connected in a splicing way, specifically, the ends, close to the mounting frame <NUM>, on the heat radiating structures <NUM> are provided with extension blocks, and the outer side surface of the mounting frame <NUM> is provided with splicing slots corresponding to the extension blocks; and the extension blocks are inserted into the splicing slots and are firmly connected through screws, and thus, the heat radiating structures <NUM> and the mounting frame <NUM> are firmly connected.

In the fourth embodiment, the structures of the two display modules are same as those of the display modules in the second embodiment, a difference lies in that reinforcing structures arranged between the reflector plates are different, in the fourth embodiment, a reinforcing plate <NUM> is arranged between the reflector plates of the two display modules and is configured to provide beneficial supporting and reinforcing effects for each functional board of the two display modules, so that each functional board has relatively high stability. The reinforcing plate <NUM> is provided with a first shading edge corresponding to the side of one light bar <NUM>, and the first shading edge coats a side corresponding to the reflector plate, the light guide plate and the optical film of the display module <NUM>', so that light generated by the light bar <NUM> may not be irradiated into the display module <NUM>'. The reinforcing plate <NUM> is provided with a second shading edge corresponding to the side of the light bar of the display module <NUM>', and the second shading edge coats a side corresponding to the optical film <NUM>, the light guide plate <NUM> and the reflector plate <NUM> of the display module <NUM>, so that light generated by the light bar of the display module <NUM>' may not be irradiated into the display module <NUM>. Lights of the two display modules are separated by virtue of the first shading edge and the second shading edge.

In the fourth embodiment, both inner and outer wall surfaces of the heat radiating pipelines <NUM> of the heat radiating structures <NUM> are provided with heat radiating fins <NUM>.

As shown in <FIG> in which external views of a product in the second embodiment of the display device provided by the present invention are shown, in combination with <FIG> in which an explosive structure of the display device is shown. According to the display device <NUM>, the outer side of the display module is additionally provided with an outer frame including a top frame, a bottom frame, a front frame and a rear frame, the front frame and the rear frame are provided with openings corresponding to liquid crystal glass, and accordingly, protective glass is arranged at the openings. Openings, corresponding to the heat radiating pipelines, in the top frame and the bottom frame are also provided with air vents communicating with the outside, so that the heat radiating effects of the heat radiating pipelines are guaranteed. The heat radiating structures at two sides of the display module are located at two sides of the product and are used as side frames to be directly exposed to the outside, so that the heat radiating effects of the heat radiating structures are improved.

Claim 1:
A display device having an outer frame (<NUM>) and a display module (<NUM>) disposed in the outer frame,
wherein sides of the outer frame (<NUM>) are provided with heat radiating outlets (<NUM>); the display module (<NUM>) comprises a mounting frame (<NUM>), heat radiating structures (<NUM>) corresponding to the heat radiating outlets (<NUM>) are formed on the mounting frame (<NUM>) such that the display module (<NUM>) is cooled by virtue of heat exchange between outside air and the heat radiating structures (<NUM>), and the heat radiating structures (<NUM>) communicate with the outside by virtue of the heat radiating outlets (<NUM>), and
wherein at least parts of the heat radiating structures (<NUM>) extend from the heat radiating outlets (<NUM>) to an outer side of the outer frame (<NUM>)
characterized in that
the heat radiating structures (<NUM>) are hollow heat radiating pipelines (<NUM>), and two ends of the heat radiating pipelines (<NUM>) are provided with openings (<NUM>) communicating with inside the display device and outside air of the display device.