CN214804631U - High-precision liquid crystal visual chart eye detection equipment - Google Patents
High-precision liquid crystal visual chart eye detection equipment Download PDFInfo
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- CN214804631U CN214804631U CN202023280457.2U CN202023280457U CN214804631U CN 214804631 U CN214804631 U CN 214804631U CN 202023280457 U CN202023280457 U CN 202023280457U CN 214804631 U CN214804631 U CN 214804631U
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Abstract
The utility model is suitable for a visual acuity test technical field provides a high-accuracy liquid crystal visual chart eyes check out test set, including determine module and radiator unit, determine module includes the framework, and the inboard of framework is provided with the display screen, installs the detection case on the outer wall of framework, and the internally mounted of detection case has the mainboard, and the top of mainboard is provided with the power strip, and the top of detection case is provided with infrared ray receiving equipment, and the radiator unit includes the conducting strip, and the conducting strip is provided with two, and two conducting strips are located power strip and mainboard respectively; the heat generated by the operation of the main board and the power panel is transferred to the heat-conducting sheet by arranging the heat-conducting sheet and the heat-conducting silicone grease; the heat-conducting silicone grease can not only obviously increase the contact area between the heat-conducting strip and the main board and the power panel, ensure that the heat in the main board and the power panel can be efficiently conducted to the heat-conducting strip, but also has good heat-conducting effect, and can further improve the heat exchange efficiency between the main board and the power panel and between the heat-conducting strip and the power panel.
Description
Technical Field
The utility model belongs to the technical field of the visual acuity test, especially, relate to a high-accuracy liquid crystal visual chart eyes check out test set.
Background
The eye chart is a chart for measuring vision. The visual acuity chart and the distance visual acuity chart are functionally classified. The visual acuity chart is based on the principle of viewing angle. The visual angle is the angle formed by the light rays emitted from two external points passing through the nodes in the eye. Normally, the human eye can distinguish the minimum distance between two points to form the minimum viewing angle, i.e. a sub-viewing angle. The visual chart is designed by taking a division angle as a unit.
The existing liquid crystal visual chart can generate a large amount of heat during working, and if the heat is not dissipated to a detection box in time, the service life of components in the detection box is influenced; on the other hand, when the detection box is subjected to heat dissipation, external dust is easy to enter the detection box.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-precision liquid crystal visual chart eye detection device, which aims to solve the problem that the prior liquid crystal visual chart can generate a large amount of heat during working, and if the heat is not dissipated to a detection box in time, the service life of components in the detection box is influenced; on the other hand, when the detection box is subjected to heat dissipation, external dust is easy to enter the detection box.
The utility model is realized in such a way, the eye detection device of the high-precision liquid crystal visual chart comprises a detection component and a heat dissipation component, wherein the detection component comprises a frame body; the display screen is arranged on the inner side of the frame body and fixedly connected with the frame body, the outer wall of the frame body is provided with a detection box, a main board is arranged in the detection box, a power panel is arranged above the main board and fixedly connected with the detection box, an infrared receiving device is arranged above the detection box and fixedly connected with the frame body, and the power panel, the infrared receiving device and the display screen are all in signal connection with the main board; the heat dissipation assembly comprises two heat conducting fins, the two heat conducting fins are respectively positioned on the power panel and the mainboard, and the two heat conducting fins are respectively fixedly connected with the power panel and the mainboard; the bottom wall of the detection box is provided with an air inlet, and the top wall of the detection box is provided with an air outlet.
Preferably, the connection positions of the main board, the power panel and the heat conducting strip are filled with heat conducting silicone grease.
Preferably, a constant current board is arranged below the main board, and the constant current board is electrically connected with the display screen.
Preferably, a motor is arranged below the constant flow plate and fixedly connected with the detection box, and fan blades are mounted on an output shaft of the motor.
Preferably, the top wall and the bottom wall of the detection box are both provided with filter screens, and the two filter screens are detachably connected with the detection box; the two filter screens correspond to the air inlet hole and the air outlet hole respectively.
Preferably, the bottom of filter screen is provided with locking bolt, locking bolt runs through the filter screen, and with the detection case spiro union.
Preferably, the side walls of the two sides of the frame body are provided with hanging lugs, and the hanging lugs are provided with threaded holes.
Compared with the prior art, the beneficial effects of the utility model are that: the heat generated by the operation of the main board and the power panel is transferred to the heat-conducting sheet by arranging the heat-conducting sheet and the heat-conducting silicone grease; the heat-conducting silicone grease can not only obviously increase the contact area between the heat-conducting fin and the main board and between the heat-conducting fin and the power board, ensure that the heat in the main board and the power board can be efficiently conducted to the heat-conducting fin, but also has good heat-conducting effect, and can further improve the heat exchange efficiency between the main board and the power board and between the heat-conducting fin and the power board;
through the arrangement of the motor and the fan blades, the heat generated by the operation of the components is conducted to the heat conducting fins due to the close contact of the heat conducting fins and the heating object, and at the moment, air quickly passes through the surfaces of the heat conducting fins and is exhausted from the air outlet holes through the flow guide effect of the fan blades, so that the heat of the components is quickly reduced;
by arranging the filter screen, because the filter screen is provided with a plurality of sieve holes, the filter screen filters the entering gas through the sieve holes, and dust in the gas is prevented from entering the detection box; and the locking bolt is convenient for detaching the filter screen from the detection box for cleaning, so that the cost is saved.
Drawings
Fig. 1 is an overall front view of the present invention;
FIG. 2 is a sectional view of the detection box of the present invention;
FIG. 3 is an enlarged view of a portion A of the main board of FIG. 2;
FIG. 4 is an enlarged view of the structure at B on the inspection box of FIG. 2;
in the figure: 1-detection component, 11-frame body, 111-hanging lug, 112-threaded hole, 12-display screen, 13-detection box, 14-main board, 15-power panel, 16-infrared receiving equipment, 17-constant flow plate, 18-motor, 19-fan blade, 2-heat dissipation component, 21-heat conducting fin, 22-air inlet hole, 23-air outlet hole, 24-heat conducting silicone grease, 25-filter screen and 26-locking bolt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, a high-precision liquid crystal eye test apparatus for an eye chart comprises a test assembly 1 and a heat dissipation assembly 2, wherein the test assembly 1 comprises a frame 11; the display screen 12 is arranged on the inner side of the frame body 11, the display screen 12 is fixedly connected with the frame body 11, the detection box 13 is arranged on the outer wall of the frame body 11, the main board 14 is arranged inside the detection box 13, the power board 15 is arranged above the main board 14, the power board 15 is fixedly connected with the detection box 13, the infrared receiving device 16 is arranged above the detection box 13, the infrared receiving device 16 is fixedly connected with the frame body 11, and the power board 15, the infrared receiving device 16 and the display screen 12 are all in signal connection with the main board 14; the heat dissipation assembly 2 comprises two heat conducting fins 21, the two heat conducting fins 21 are respectively positioned on the power panel 15 and the main board 14, and the two heat conducting fins 21 are respectively fixedly connected with the power panel 15 and the main board 14; the bottom wall of the detection box 13 is provided with an air inlet hole 22, and the top wall of the detection box 13 is provided with an air outlet hole 23.
In the present embodiment, the housing 11 is provided so that the housing 11 protects the outer wall of the display panel 12. Through setting up detection case 13, make detection case 13 provide the environment of placing for components and parts, avoid components and parts direct exposure in the air. By providing the main board 14, wherein the main board 14 is formed by a multifunctional integrated chip, the main board 14 includes a central processing module, a data storage module, and a signal receiving module. The addition of a plurality of intelligent modules, the switching of different visual detection modes is realized to accessible external remote controller, has embodied the intellectuality of eye chart, has strengthened the practicality. The data storage module is provided with an E-shaped logo, a C-shaped logo, a letter logo, a number logo, a child logo, a color blindness logo, a vision sensitivity test logo and other logos. A plurality of indications mark collection is as an organic whole, promotes efficiency greatly, and it is convenient to use.
By arranging the power panel 15, the power panel 15 supplies power for components in the device, wherein the power panel 15 is connected with an external plug through a power line. By arranging the infrared receiving device 16, wherein an infrared projector is arranged in the external remote controller, the infrared projector is in remote sensing connection with the infrared receiving device 16, when the liquid crystal visual chart is used, an execution signal is transmitted to the infrared projector through function keys on the external remote controller, the execution signal is transmitted to the infrared receiving device 16 through the infrared projector, the infrared receiving device 16 transmits a signal source to the main board 14, and at the moment, the main board 14 presents a corresponding word list or chart on the display screen 12.
By providing the heat conductive sheet 21, since the heat conductive sheet 21 is in close contact with the heat generating object, heat generated by the operation of the component is conducted to the heat conductive sheet 21. By providing the air inlet hole 22 and the air outlet hole 23, when the fan blade 19 rotates, the external air enters the inside of the detection box 13 through the air inlet hole 22, and the air in the detection box 13 is discharged through the air outlet hole 23, thereby continuously circulating to reduce the temperature in the detection box 13.
Further, the joints of the main board 14, the power board 15 and the heat conducting strip 21 are filled with heat conducting silicone grease 24.
In this embodiment, the contact area between the heat conducting strip 21 and the main board 14 and the power board 15 can be significantly increased by the heat conducting silicone grease 24, so that the heat in the main board 14 and the power board 15 can be efficiently conducted to the heat conducting strip 21, and meanwhile, the heat conducting effect of the heat conducting silicone grease 24 is good, so that the heat exchange efficiency between the main board 14 and the power board 15 and the heat conducting strip 21 can be further improved.
Further, a constant current board 17 is arranged below the main board 14, and the constant current board 17 is electrically connected with the display screen 12.
In the present embodiment, the constant current plate 17 is provided to supply a constant direct current to the display panel 12 by the constant current plate 17, so that the display panel 12 emits light.
Further, a motor 18 is arranged below the constant current plate 17, the motor 18 is fixedly connected with the detection box 13, and fan blades 19 are mounted on an output shaft of the motor 18.
In the present embodiment, by providing the motor 18 and the fan blade 19, the heat generated by the operation of the component is conducted to the heat conducting sheet 21 due to the close contact between the heat conducting sheet 21 and the heat generating object, and at this time, the air is quickly passed through the surface of the heat conducting sheet 21 by the flow guiding effect of the fan blade 19 and is discharged from the air outlet 23, so that the heat conducting sheet 21 is dissipated, and the temperature of the component is quickly lowered.
Furthermore, the top wall and the bottom wall of the detection box 13 are both provided with filter screens 25, and the two filter screens 25 are both detachably connected with the detection box 13; the two screens 25 correspond to the inlet port 22 and the outlet port 23, respectively.
In the present embodiment, by providing the filter screen 25, since the filter screen 25 has a plurality of sieve holes, the filter screen 25 filters the entering gas through the sieve holes, thereby preventing the dust in the gas from entering the detection box 13.
Further, the bottom of the filter screen 25 is provided with a locking bolt 26, and the locking bolt 26 penetrates through the filter screen 25 and is screwed with the detection box 13.
In the present embodiment, the filter net 25 is detachably connected to the detection box 13 by the locking bolt 26 by providing the locking bolt 26, wherein the connection between the detection box 13 and the locking bolt 26 has a bolt hole.
Furthermore, the side walls of both sides of the frame 11 are respectively provided with a hanging lug 111, and the hanging lug 111 is provided with a threaded hole 112.
In this embodiment, by providing the hanging lug 111 and the threaded hole 112, a user can screw the bolt into the threaded hole 112 on the hanging lug 111 to connect with a wall, which facilitates adjustment of the height and angle of the visual chart.
To sum up, the utility model discloses when using, at first through the function button on the external remote controller with carry out signal transmission to infrared ray projector, transmit to infrared ray by infrared ray projector and accept on equipment 16, infrared ray accepts equipment 16 and transmits the signal source to mainboard 14 again, then mainboard 14 can present corresponding word table or chart on display screen 12, meanwhile, because conducting strip 21 and the object in close contact with that generates heat, make the heat conduction that components and parts work produced to conducting strip 21 on, then through flabellum 19's water conservancy diversion effect, make the air pass through conducting strip 21 surface fast, and discharge from venthole 23, thereby dispel the heat to conducting strip 21, so that the temperature of components and parts descends fast.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a high-accuracy liquid crystal visual acuity chart eyes check out test set, includes determine module (1) and radiator unit (2), its characterized in that: the detection assembly (1) comprises a frame body (11);
the infrared ray detection device is characterized in that a display screen (12) is arranged on the inner side of the frame body (11), the display screen (12) is fixedly connected with the frame body (11), a detection box (13) is installed on the outer wall of the frame body (11), a main board (14) is installed inside the detection box (13), a power panel (15) is arranged above the main board (14), the power panel (15) is fixedly connected with the detection box (13), an infrared ray receiving device (16) is arranged above the detection box (13), the infrared ray receiving device (16) is fixedly connected with the frame body (11), and the power panel (15), the infrared ray receiving device (16) and the display screen (12) are in signal connection with the main board (14);
the heat dissipation assembly (2) comprises two heat conducting fins (21), the two heat conducting fins (21) are respectively positioned on the power panel (15) and the mainboard (14), and the two heat conducting fins (21) are respectively fixedly connected with the power panel (15) and the mainboard (14);
an air inlet hole (22) is formed in the bottom wall of the detection box (13), and an air outlet hole (23) is formed in the top wall of the detection box (13).
2. A high precision liquid crystal eye test apparatus according to claim 1, wherein: the connection parts of the main board (14) and the power panel (15) with the heat conducting strip (21) are filled with heat conducting silicone grease (24).
3. A high precision liquid crystal eye test apparatus according to claim 1, wherein: a constant current plate (17) is arranged below the main plate (14), and the constant current plate (17) is electrically connected with the display screen (12).
4. A high precision liquid crystal eye test apparatus according to claim 3, wherein: the motor (18) is arranged below the constant current plate (17), the motor (18) is fixedly connected with the detection box (13), and fan blades (19) are installed on an output shaft of the motor (18).
5. A high precision liquid crystal eye test apparatus according to claim 1, wherein: the top wall and the bottom wall of the detection box (13) are respectively provided with a filter screen (25), and the two filter screens (25) are detachably connected with the detection box (13);
the two filter screens (25) correspond to the air inlet hole (22) and the air outlet hole (23) respectively.
6. A high precision liquid crystal eye test apparatus according to claim 5, wherein: the bottom of filter screen (25) is provided with locking bolt (26), locking bolt (26) run through filter screen (25), and with detection case (13) spiro union.
7. A high precision liquid crystal eye test apparatus according to claim 1, wherein: the side walls of two sides of the frame body (11) are provided with hanging lugs (111), and the hanging lugs (111) are provided with threaded holes (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023280457.2U CN214804631U (en) | 2020-12-30 | 2020-12-30 | High-precision liquid crystal visual chart eye detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023280457.2U CN214804631U (en) | 2020-12-30 | 2020-12-30 | High-precision liquid crystal visual chart eye detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214804631U true CN214804631U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023280457.2U Active CN214804631U (en) | 2020-12-30 | 2020-12-30 | High-precision liquid crystal visual chart eye detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214804631U (en) |
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2020
- 2020-12-30 CN CN202023280457.2U patent/CN214804631U/en active Active
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