CN212624015U

CN212624015U - Section bar structure of infrared touch screen

Info

Publication number: CN212624015U
Application number: CN202021527656.6U
Authority: CN
Inventors: 周雪松; 王敏
Original assignee: Jiangsu Odin Electronic Technology Co ltd
Current assignee: Jiangsu Odin Electronic Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-02-26
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a section bar structure of infrared touch-sensitive screen belongs to teaching equipment technical field. The utility model discloses a section bar structure is including the bottom frame section bar that is used for supporting display glass, and vertical frame and the horizontal frame of bottom frame section bar extend upwards respectively and form first baffle and second baffle, lead to filtering striation sealing connection between first baffle, the second baffle, and the one end that the filtering striation is located the second baffle is laminated mutually with the display glass surface, and the filtering striation is located this first baffle surface alignment setting or outstanding setting relatively of one end of first baffle. The utility model overcomes because of the poor not enough that leads to infrared touch screen life to reduce of frame section bar leakproofness among the prior art, provide an infrared touch screen's section bar structure, filter strip one end is laminated mutually with the display glass surface, and the relative first baffle surface of the other end aligns or outstanding setting, can play good sealed effect, prevents effectively that dust steam from getting into and seals the intracavity.

Description

Section bar structure of infrared touch screen

Technical Field

The utility model belongs to the technical field of the teaching equipment, more specifically say, relate to a section bar structure of infrared touch-sensitive screen.

Background

The traditional integrated infrared touch screen frame is formed by a hollow aluminum alloy frame with an opening at one side, a circuit board, an infrared light-emitting diode and an infrared receiving diode are placed in a cavity, and a light filtering strip is arranged at one side of the opening of the frame.

Along with the development of wisdom education, the infrared all-in-one machine gets into the classroom in a large number and uses, teacher's chalk is write and is cleaned and produce a large amount of dusts, the condition such as clearance all-in-one machine demonstration glass all puts forward new requirements to the structure of infrared all-in-one machine, do not have waterproof dirt-proof function, chalk dust, wet rag clearance show glass produce water and filter in the striation gets into the frame with the gap of frame, a long time, water and dust get into and influence circuit element work and produce the trouble, reduce the life of infrared all-in-one machine, increase the cost of repairing.

As in patent application No.: 201911125509.8, filing date: 11 and 18 months in 2019, the name of the invention is: the utility model provides an infrared touch screen frame structure, infrared touch screen and wisdom blackboard, the infrared touch screen frame structure that this application disclosed, when overhauing or changing lamp strip and filtering strip, only need demolish the corner sign indicating number of corresponding frame and this frame both sides, then directly take lamp strip and filtering strip in the frame out can, greatly improved the efficiency of overhauing and changing. But the gap that forms between the filter strip in this scheme and the frame structure is intake easily, leads to the lamp strip to receive damp damage, has reduced infrared touch screen's life and touch sensitivity.

In summary, how to overcome the defect that the service life of the infrared touch screen is reduced due to poor sealing performance of the frame profile in the prior art is a technical problem to be solved urgently in the prior art.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model overcomes because of the poor not enough that leads to infrared touch screen life to reduce of frame section bar leakproofness among the prior art, provide an infrared touch screen's section bar structure, filter strip one end is laminated mutually with the display glass surface, and the relative first baffle surface of the other end aligns or outstanding setting, can play good sealed effect, prevents effectively that dust steam from getting into and seals the intracavity.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a section bar structure of infrared touch screen, including the bottom frame section bar that is used for supporting display glass, vertical frame and the horizontal frame of bottom frame section bar upwards extend respectively and form first baffle and second baffle, lead to filtering striation sealing connection between first baffle, the second baffle, and the one end that the optical filtering striation is located the second baffle is laminated mutually with the display glass surface, and the optical filtering striation is located this first baffle surface alignment setting or outstanding setting relatively of one end of first baffle.

As a further improvement of the present invention, the end of the filter strip located at the second baffle is higher than the end of the filter strip located at the first baffle.

As a further improvement, the one end of the filter strip at the first baffle is of a smooth curved surface structure.

As a further improvement of the present invention, one end of the filter strip located on the second baffle is a plane structure.

As a further improvement, the second baffle is attached to the surface of the display glass.

As a further improvement, the light filtering strip is detachably connected with the first baffle and the second baffle.

As a further improvement, the filter strip is provided with protruding portions and/or water-proof grooves at both ends, the corresponding water-proof grooves and/or protruding portions are provided on the first baffle and the second baffle, and the filter strip is fixed on the baffle through the buckling fit of the protruding portions and the water-proof grooves.

As a further improvement of the utility model, the protruding part and/or the waterproof groove are obliquely arranged.

As a further improvement, the utility model discloses still be equipped with the gasket between light filtering strip and first baffle, the second baffle.

As a further improvement, the utility model also includes an infrared lamp strip, and the infrared lamp strip is installed in the closed cavity that forms between first baffle, second baffle and the light filtering strip.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a section bar structure of infrared touch-sensitive screen, the one end that the filter strip is located the second baffle is laminated with the display glass surface mutually, can play good sealed effect, and the one end that the filter strip is located first baffle aligns setting or outstanding setting relatively this first baffle surface, and the salient can play the apron effect, prevents effectively that dust steam from getting into and seals the intracavity.

(2) The utility model discloses a section bar structure of infrared touch-sensitive screen, the one end that the filter strip is located the second baffle is higher than the one end that this filter strip is located first baffle to make the filter strip downward sloping form the inclined plane, when carrying out the blackboard writing, the dust falls on the filter strip surface, because the reason dust on inclined plane can not pile up, and can be landing under the action of gravity, consequently can not influence infrared lamp strip normal work, the life of extension infrared lamp strip reduces the maintenance cost.

(3) In the profile structure of the infrared touch screen, one end of the filter strip, which is positioned at the first baffle, is of a smooth curved surface structure, so that accumulated dust or water vapor can quickly slide down along the smooth curved surface structure; the one end that the optical filtering strip is located the second baffle is planar structure, and the second baffle laminates with display glass surface mutually to increase optical filtering strip and display glass's area of contact, improve the leakproofness of optical filtering strip through the inseparable laminating between them.

(4) The utility model discloses a section bar structure of infrared touch-sensitive screen is equipped with protruding portion and/or water-proof tank on the both ends of light filtering strip, and the correspondence is equipped with water-proof tank and/or protruding portion on first baffle, the second baffle, fixes the light filtering strip on the baffle through the buckle cooperation of protruding portion and water-proof tank, realizes dismantling between them and connects to this section bar structure of fast assembly.

Drawings

Fig. 1 is a schematic structural diagram of a profile structure of a mid-infrared touch screen according to the present invention (in an assembled state of filter strips);

fig. 2 is a schematic structural diagram of the profile structure of the mid-infrared touch screen of the present invention (the filter strip is in a separated state);

fig. 3 is a schematic structural view of the light filtering strip of the present invention;

fig. 4 is an enlarged schematic structural view of the profile structure of the mid-infrared touch screen of the present invention.

The reference numerals in the schematic drawings illustrate:

100. a bottom frame profile; 110. a longitudinal frame; 111. a first baffle plate; 112. a longitudinal frame waterproof groove; 113. a longitudinal bezel projection; 120. a transverse frame; 121. a second baffle; 122. a transverse frame waterproof groove; 123. a transverse bezel projection; 130. a closed cavity; 200. an infrared light bar; 300. a display glass; 400. a light filtering strip; 410. a connecting portion; 420. a front end portion; 421. a front end protrusion; 422. a front end waterproof groove; 430. a rear end portion; 431. a rear end projection; 432. the rear end water-proof groove.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

With reference to fig. 1 and fig. 2, the profile structure of the infrared touch screen of the embodiment includes a bottom frame profile 100 for supporting a display glass 300, a longitudinal frame 110 and a transverse frame 120 of the bottom frame profile 100 respectively extend upward to form a first baffle 111 and a second baffle 121, the first baffle 111 and the second baffle 121 are hermetically connected by a filter strip 400, one end of the filter strip 400 located on the second baffle 121 is attached to a surface 300 of the display glass, and one end of the filter strip 400 located on the first baffle 111 is aligned with or protrudes from a surface of the first baffle 111.

In this embodiment, the display glass 300 is fixed on the frame profile, wherein the bottom frame profile 100 at the bottom of the display glass 300 mainly plays a role of supporting the display glass 300, and the longitudinal frame 110 and the transverse frame 120 of the bottom frame profile 100 respectively extend upwards to form a baffle, where "longitudinal" refers to a width direction of the display glass 300, and "transverse" refers to a length direction of the display glass 300, as an implementation manner, in this embodiment, the longitudinal frame 110 and the transverse frame 120 respectively extend along the width direction of the display glass 300 to form a first baffle 111 and a second baffle 121 that are parallel to each other, and the second baffle 121 may be regarded as a side-wrapped structure formed by bending the transverse frame 120, so as to support the display glass 300.

In this embodiment, a light filtering strip 400 is disposed between the first barrier 111 and the second barrier 121, and the light filtering strip 400 is used for filtering light, so that only infrared light in accordance with a specific wavelength range can pass through the light filtering strip 400. Specifically, in this embodiment, the profile structure is further provided with an infrared light bar 200, and the infrared light bar 200 is installed in the closed cavity 130 formed between the first baffle 111, the second baffle 121 and the light filtering strip 400.

In order to facilitate assembly in the prior art, the filter strip 400 is usually detachably connected to the frame profile structure, and a clamping groove is usually formed in the frame profile so as to clamp the filter strip 400 to the frame profile structure. However, due to the improper arrangement of the structure and the position of the light filtering strip 400, dust and water vapor often enter the gap between the light filtering strip 400 and the frame profile due to the mutual matching, and further the transmission and reception of the infrared light bar 200 are affected.

In order to prevent moisture and dust from entering the closed cavity 130, in this embodiment, one end of the light filtering strip 400 located on the second barrier 121 is attached to the surface of the display glass 300, as described above, the second barrier 121 may be regarded as a side-wrapped structure formed by bending the transverse frame 120, and is used to press the display glass 300 onto the display module disposed at the rear portion, so that the second barrier 121 is closely attached to the surface of the display glass 300, and at this time, the light filtering strip 400 is fixed on the second barrier 121 and the end portion of the light filtering strip is attached to the surface of the display glass 300, so that a good sealing effect can be achieved.

Further, in this embodiment, one end of the light filter strip 400 located on the first baffle 111 is aligned with or protrudes from the surface of the first baffle 111, the end of the light filter strip 400 is aligned with the surface of the first baffle 111, or the end of the light filter strip 400 protrudes from the surface of the first baffle 111, and the protruding portion can function as a cover plate, so that dust and moisture can be effectively prevented from entering the closed cavity 130.

As an implementation manner, in the embodiment, one end of the light filter strip 400 located on the second baffle 121 is higher than one end of the light filter strip 400 located on the first baffle 111, so that the light filter strip 400 is inclined downward to form an inclined plane, when writing on a blackboard, dust falls on the surface of the light filter strip 400, and due to the inclined plane, the dust cannot accumulate and falls off under the action of gravity, so that the normal operation of the infrared light bar 200 is not affected.

Further, as an implementation manner, in the embodiment, one end of the light filter strip 400 located at the first baffle 111 is a smooth curved structure, so that the accumulated dust or vapor can quickly slide down along the smooth curved structure.

Preferably, in the embodiment, one end of the light filter strip 400 located on the second barrier 121 is a planar structure, and the second barrier 121 is attached to the surface of the display glass 300. Since the display glass 300 is a flat glass, the filter strip 400 located at one side of the display glass 300 is configured to have a flat structure, so as to increase the contact area between the filter strip 400 and the display glass 300, and improve the sealing performance of the filter strip 400 by the close adhesion of the two.

In addition, for convenience of assembly, the light filtering strip 400 is detachably connected with the first baffle 111 and the second baffle 121 in the embodiment, for example, the connection can be realized through a bolt assembly, or a fastening structure is adopted for connection, and the like.

As an implementation manner, in this embodiment, two end portions of the light filter strip 400 are provided with a protruding portion and/or a waterproof groove, the first baffle 111 and the second baffle 121 are correspondingly provided with a waterproof groove and/or a protruding portion, and the light filter strip 400 is fixed on the baffles by the snap-fit of the protruding portion and the waterproof groove.

Referring to fig. 3, in the present embodiment, the filter strip 400 includes a front end portion 420 connected to the first barrier 111, a rear end portion 430 connected to the second barrier 121, and a connecting portion 410 connecting the front end portion 420 and the rear end portion 430, wherein the front end portion 420 is provided with a front protrusion 421 and a front waterproof groove 422, and the rear end portion 430 is provided with a rear protrusion 431 and a rear waterproof groove 432.

Referring to fig. 4, in this embodiment, the first baffle 111 is provided with a longitudinal frame waterproof groove 112 and a longitudinal frame protrusion 113, and the second baffle 121 is provided with a transverse frame waterproof groove 122 and a transverse frame protrusion 123. In the embodiment, the front-end protrusion 421 is clamped into the longitudinal-frame waterproof groove 112, and the longitudinal-frame protrusion 113 is clamped into the front-end waterproof groove 422, so that the light filter strip 400 is fixed on the first baffle 111; similarly, the filter strip 400 is fixed to the second barrier 121 by snapping the rear protrusion 431 into the lateral border waterproofing groove 122 and by snapping the lateral border protrusion 123 into the rear waterproofing groove 432.

Preferably, in order to extend the sealing path, a labyrinth structure is formed, and the protrusion and/or the waterproof groove are/is obliquely arranged in the present embodiment. In the embodiment, the convex angle and the groove which are mutually matched are arranged on the filter strip 400 and the baffle, and the gap formed by matching the filter strip 400 and the baffle forms the height difference, so that dust and water can be prevented from entering the closed cavity 130 while the filter strip 400 is fixed, the service life of the infrared lamp strip 200 is prolonged, and the maintenance cost is reduced.

In addition, in order to further improve the sealing performance of the closed cavity 130, sealing sheets, such as sealing structures made of elastic rubber materials, may be further disposed between the filter strips 400 and the first and

second baffles

111 and 121.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. A profile structure of an infrared touch screen, comprising a bottom frame profile (100) for supporting a display glass (300), characterized in that: the vertical frame (110) and the horizontal frame (120) of the bottom frame profile (100) extend upwards to form a first baffle (111) and a second baffle (121), the first baffle (111) and the second baffle (121) are connected in a sealing mode through a filtering light bar (400), one end, located on the second baffle (121), of the filtering light bar (400) is attached to the surface of the display glass (300), and one end, located on the first baffle (111), of the filtering light bar (400) is aligned to or protrudes from the surface of the first baffle (111).

2. The profile structure of an infrared touch screen according to claim 1, wherein: one end of the filter strip (400) positioned on the second baffle (121) is higher than one end of the filter strip (400) positioned on the first baffle (111).

3. The profile structure of an infrared touch screen according to claim 2, wherein: one end of the light filtering strip (400) positioned on the first baffle (111) is of a smooth curved surface structure.

4. The profile structure of an infrared touch screen according to claim 2, wherein: one end of the light filtering strip (400) positioned on the second baffle (121) is of a plane structure.

5. The profile structure of the infrared touch screen as claimed in claim 4, wherein: the second baffle (121) is attached to the surface of the display glass (300).

6. The profile structure of the infrared touch screen according to any one of claims 1 to 5, wherein: the light filtering strip (400) is detachably connected with the first baffle (111) and the second baffle (121).

7. The profile structure of an infrared touch screen according to claim 6, wherein: protruding parts and/or waterproof grooves are arranged at two end parts of the light filtering strip (400), the first baffle plate (111) and the second baffle plate (121) are correspondingly provided with the waterproof grooves and/or the protruding parts, and the light filtering strip (400) is fixed on the baffle plates through the protruding parts and the waterproof grooves in a buckling fit mode.

8. The profile structure of an infrared touch screen according to claim 7, wherein: the protruding part and/or the waterproof groove are/is obliquely arranged.

9. The profile structure of an infrared touch screen according to claim 6, wherein: and sealing sheets are also arranged between the light filtering strip (400) and the first baffle plate (111) and between the light filtering strip and the second baffle plate (121).

10. The profile structure of an infrared touch screen according to claim 9, wherein: the LED lamp is characterized by further comprising an infrared lamp bar (200), wherein the infrared lamp bar (200) is installed in a closed cavity (130) formed among the first baffle plate (111), the second baffle plate (121) and the light filtering bars (400).