Infrared induction display box and range hood

Abstract

The utility model discloses an infrared induction display box and a range hood, a glass panel is arranged at the front end part of the range hood, an infrared emission window is arranged on the glass panel, the infrared induction display box is arranged in an accommodating cavity in the range hood, the infrared induction display box comprises a PCB (Printed Circuit Board), and two groups of infrared generating parts and infrared receiving parts which are close to each other are arranged on the PCB close to the two end parts; the infrared generating parts emit infrared rays, the infrared rays are retroreflected after being in contact with an object and are received by the infrared receiving parts to control on-off of the range hood, and when the hand slides from one end of the range hood to the other end of the range hood, the two sets of infrared generating parts and infrared receiving parts at the two ends receive signals respectively and control on-off of the range hood according to the sequence of the signals. And the range hood can be conveniently and quickly controlled to be started and shut down at night.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an infrared induction display box and a range hood. Background Art

[0002] A range hood, also known as a range hood, is a kitchen appliance that purifies the kitchen environment. It is installed above the kitchen stove and can quickly remove the waste from stove combustion and the oil smoke that is harmful to the human body produced during cooking and discharge it outdoors. At the same time, it condenses and collects the oil smoke, reduces pollution, purifies the air, and has a safety guarantee function of anti-toxicity and explosion-proof.

[0003] The existing range hood requires the user to press a switch button to start and close the range hood when turning it on and off. However, in the case of low visibility at night, the user needs to identify the position of the switch button before operating it, which is inconvenient to use. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above and / or existing problems in an existing infrared induction display box and a range hood, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide an infrared sensing display box and a range hood, by arranging a glass panel at the front end of the range hood, with an infrared emitting window on the glass panel, and arranging an infrared sensing display box in the internal accommodating cavity of the range hood, including a PCB board, and two groups of infrared generating parts and infrared receiving parts close to each other are arranged near the two end positions of the PCB board. The infrared generating part emits infrared rays, which are reflected after contacting an object and are received by the infrared receiving part to control the switch of the range hood. When the hand slides from one end of the range hood to the other end, the two groups of infrared generating parts and infrared receiving parts at the two ends respectively receive signals, and the range hood is controlled to be turned on and off according to the sequence of the signals, so that the range hood can be quickly controlled to start and shut down at night.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] An infrared sensing display box, used for a range hood, characterized in that it comprises an infrared generating part and an infrared receiving part arranged on a PCB board, the infrared generating part and the infrared receiving part are arranged close to each other, the infrared generating part has a connecting pin connected to the PCB board, and the infrared receiving part is formed with a boss, and an infrared receiving element is provided on the boss for receiving infrared rays; it comprises a partition part that is not transparent to infrared rays, the partition part is located between the infrared generating part and the infrared receiving part, and the lower edge of the partition part is not higher than 1 / 2 of the height of the boss.

[0009] As a preferred solution of the infrared sensing display box and the range hood described in the utility model, it also includes an upper supporting box, the partition part is arranged at the bottom of the upper supporting box, an infrared transmitting channel is provided between the infrared generating part and the upper supporting box, an infrared transmitting hole is provided on the upper supporting box at a position corresponding to the infrared transmitting channel, an infrared receiving channel is provided between the infrared receiving part and the upper supporting box, and an infrared receiving hole is provided at a position corresponding to the infrared receiving channel of the upper supporting box.

[0010] As a preferred solution of an infrared sensing display box and a range hood described in the utility model, the upper support box is provided with an infrared transparent film, the infrared transparent film is attached to the corresponding positions of the infrared emitting hole and the infrared receiving hole, a silk screen layer is arranged on the infrared transparent film, and the partition part is multi-layered and separates the infrared emitting channel and the infrared receiving channel.

[0011] As a preferred solution of an infrared sensing display box and a range hood described in the utility model, it also includes a lower support box connected to the inner side of the upper support box, the PCB board is located between the upper support box and the lower support box, the side wall of the upper support box is provided with a connecting block, the symmetrical side walls of the lower support box are provided with connecting buckles that cooperate with the connecting block, and second elastic parts are provided at both ends of the lower support box to support the upper support box.

[0012] As a preferred solution of the infrared sensing display box and the range hood described in the utility model, it also includes a glass panel, having an inner side surface facing the upper support box, a dark-colored shielding film being heat-melted on the inner side surface, an infrared emitting window being provided on the glass panel at a position corresponding to the infrared-transmitting film, a first display part being provided on the PCB board, the first display part having a light-emitting module; and a second display part being provided, the second display part having a light-emitting body connected to the PCB board, a light-guiding channel being provided between the light-emitting body and the glass panel; a light-transmitting window having the dark-colored shielding film is provided at the glass panel corresponding to the light-emitting module and the light-emitting body, and a light-shielding silk-screen layer is provided on the inner side of the light-transmitting window corresponding to the second display part.

[0013] As a preferred solution of an infrared sensing display box and a range hood described in the utility model, the light-emitting module is a digital tube, the light-emitting module has a light-emitting module shielding film, the light-emitting module shielding film has a light-transmitting area, and the light-transmitting area corresponds to the outlet of the light-guiding channel of the light-emitting module.

[0014] As a preferred solution of the infrared sensing display box and the range hood described in the utility model, a partially transparent touch film is provided on the inner side of the glass panel, and the touch circuit is attached to display a central icon around the first display part.

[0015] As a preferred solution of the infrared sensing display box and the range hood described in the utility model, the light-emitting module is a display screen having a light-emitting module shielding film, the light-emitting module shielding film has a light-transmitting area, and the light-transmitting area corresponds to the position of the light-emitting module display screen.

[0016] As a preferred solution of the infrared sensing display box and range hood described in the utility model, the second display part has an elastic part, which is arranged on the periphery of the light guiding channel, and has a light uniforming part which is arranged on the top of the elastic part, and a through hole is opened on the inner side surface of the glass panel at a position corresponding to the light guiding channel, and the light uniforming part is interference fit with the through hole.

[0017] A range hood comprises the above-mentioned infrared induction display box, characterized in that it comprises a shell, which encloses an inner cavity, in which an air duct and a receiving cavity are formed, baffles are arranged at the angles on both sides of the shell, an air curtain fan and a PM2.5 detection device are arranged inside the receiving cavity, the upper support plate and the lower support plate clamp the PCB board and are arranged at the opening of the receiving cavity, and the glass panel seals the opening of the receiving cavity.

[0018] Compared with the prior art: a glass panel is arranged at the front end of the range hood, an infrared emitting window is opened on the glass panel, an infrared sensing display box is arranged in the internal accommodating cavity of the range hood, including a PCB board, and two groups of infrared generating parts and infrared receiving parts close to each other are arranged near the two ends of the PCB board. The infrared generating part emits infrared rays, which are reflected after contacting an object and are received by the infrared receiving part to control the switch of the range hood. When the hand slides from one end of the range hood to the other end, the two groups of infrared generating parts and infrared receiving parts at both ends receive signals respectively, and the range hood is controlled to be turned on and off according to the sequence of the signals, which is convenient for quickly controlling the start and shutdown of the range hood at night. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 This is the overall structure diagram of an infrared induction display box of the utility model;

[0021] Figure 2 This is an exploded diagram of an infrared induction display box of the utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of an infrared induction display box of the utility model;

[0023] Figure 4 This is a structural diagram of a glass panel of an infrared induction display box of the utility model;

[0024] Figure 5 This is an overall structural diagram of a range hood of the present utility model. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] The utility model provides an infrared sensing display box and a range hood, wherein a glass panel is arranged at the front end of the range hood, an infrared emitting window is opened on the glass panel, an infrared sensing display box is arranged in an internal accommodating cavity of the range hood, the infrared sensing display box comprises a PCB board, two groups of infrared generating parts and infrared receiving parts close to each other are arranged near two end portions of the PCB board, the infrared generating part emits infrared rays, which are reflected after contacting an object and are received by the infrared receiving part to control the switch of the range hood, when a hand slides from one end of the range hood to the other end, the two groups of infrared generating parts and infrared receiving parts at the two ends receive signals respectively, and the range hood is controlled to be switched on and off according to the sequence of the signals, so that the range hood can be quickly controlled to be started and shut down at night.

[0029] In some embodiments, wherein reference Figure 1-4 , discloses an infrared induction display box for a range hood, comprising an infrared generating unit 110 and an infrared receiving unit 120 arranged on a PCB board 100, the infrared generating unit 110 and the infrared receiving unit 120 being arranged close to each other, the infrared generating unit 110 having a connecting pin connected to the PCB board 100, and the infrared receiving unit 120 forming a boss, on which an infrared receiving unit is provided for receiving infrared, the infrared receiving unit being located on the top of the boss, so that the position of the infrared generating unit 110 is lower than the infrared receiving unit 120, the boss itself cannot transmit infrared rays, thereby preventing the infrared rays emitted by the infrared generating unit 110 from being transmitted even when other structures are unreliable In the case of infrared irradiation, it cannot directly irradiate the infrared receiving part 120; it includes an infrared-impermeable partition part 210, which is located between the infrared generating part 110 and the infrared receiving part 120, and the lower edge of the partition part 210 is not higher than 1 / 2 of the height of the boss. Since the infrared generating part 110 is close to the infrared receiving part 120, and the lower edge of the partition part 210 is not higher than 1 / 2 of the height of the boss, even if the infrared generating part 110 emits infrared rays to the infrared receiving part 120, it will be separated by the partition part 210. The partition part 210 here is an infrared-impermeable structural part, such as an opaque film, which separates the infrared generating part 110 from the infrared receiving part 120.

[0030] In some embodiments, Figure 3 As shown, the partition portion 210 extends downward to the PCB board, and the gap between it and the PCB board is narrower, forming an infrared generating channel that is completely separated in space and an infrared receiving channel that is arranged side by side. Moreover, the partition portion 210 is at least one layer of partition. In some embodiments, the partition portion 210 is two or more layers of partitions arranged in parallel, so as to further reduce the influence of the infrared generating portion 110 on the infrared receiving portion 120.

[0031] The infrared generating unit 110 and the infrared receiving unit 120 which are close to each other are divided into two groups and are symmetrically arranged at the top of the PCB board 100 near the two end positions with the first display unit 130 as the center. When the hand slides from one side to the other, for example, the hand slides from the right side to the left side, the infrared light emitted by the infrared generating unit 110 on the right side touches the hand and is refracted and received by the infrared receiving unit 120. When the hand slides to the left side, the infrared light emitted by an infrared generating unit 110 on the left side touches the hand and is refracted and received by the infrared receiving unit 120. The infrared light received by the two infrared receiving units 120 is staggered in time, and the start and shutdown of the range hood is controlled according to the order in which the two infrared receiving units 120 receive the infrared light.

[0032] In some embodiments, the infrared sensing display box also includes an upper support plate 200 and a lower support plate 300, the partition portion 210 is arranged at the bottom of the upper support box 200, an infrared transmitting channel is provided between the infrared generating portion 110 and the upper support box 200, an infrared transmitting hole 230 is provided on the upper support box 200 at a position corresponding to the infrared transmitting channel, an infrared receiving channel is provided between the infrared receiving portion 120 and the upper support box 200, and an infrared receiving hole is provided at a position corresponding to the infrared receiving channel of the upper support box 200. The infrared rays generated by the infrared generating portion pass through the infrared generating channel and are emitted to the outside through the infrared reflecting hole; when the user waves his hand, the infrared rays will be reflected, and some of the infrared rays will be reflected into the infrared receiving hole, and then received by the infrared receiving element through the infrared receiving channel. Since the infrared receiving head is convexly arranged in the channel, it is closer to the infrared receiving hole, thereby receiving as much energy as possible, and being more sensitive and accurate.

[0033] In some embodiments, an infrared-transmitting film 240 is further provided on the upper support box 200 of the infrared sensing display box. The infrared-transmitting film 240 is attached to the corresponding positions of the infrared emitting hole 230 and the infrared receiving hole. A silk-screen layer is provided on the infrared-transmitting film 240. The partition part 210 is multi-layered and separates the infrared emitting channel and the infrared receiving channel. Since the infrared generating part 110 and the infrared receiving part 120 are both sensitive components, when exposed to strong external light, especially the sensitive infrared receiving part 120 is prone to life damage or malfunction. By providing the infrared-transmitting film, the generation and reflection of infrared rays can be met. At the same time, the smooth surface thereof can reflect part of the visible light and block part of the visible light, thereby improving the reliability of the infrared receiving part 120 and the infrared generating part 110.

[0034] In some embodiments, the lower support box 300 of the infrared sensing display box is connected to the inner side of the upper support box 200, the PCB board 100 is located between the upper support box 200 and the lower support box 300, the side wall of the upper support box 200 is provided with a connecting block 270, and the symmetrical side wall of the lower support box 300 is provided with a connecting buckle 310 that cooperates with the connecting block 270, and the two ends of the lower support box 300 are provided with a second elastic member 320 to support the upper support box 200, and the upper support box 200 and the lower support box 300 are connected and fixed by screws. Due to the use of screw fixation and the second elastic member 320, 20 is fixed so that the upper support box 200 and the lower support box 300 are reliably connected, and the second elastic member 320 is fixed on the bottom plate of the electric control accommodating cavity. Since the elasticity formed by it has an upward deformation force, it can help the display box to fit upwardly to the inner wall of the panel, so that the outlet of the infrared generating channel fits closely to the inner wall of the glass panel 400, thereby ensuring its outward emission. At the same time, the infrared rays reflected from the outside of the glass panel 400 are in close contact with the inner side of the glass panel 400, so that the infrared reflection path is shorter, thereby making the reception of infrared signals more accurate and reliable.

[0035] In some embodiments, a connection port is provided on the top of the lower support box 300 of the infrared sensing display box to facilitate plug-in connection with the PCB board, and to facilitate disassembly, assembly and maintenance of the infrared sensing display box as a whole. The bottom end of the partition portion 210 abuts against the top surface of the PCB board 100, separating the infrared receiving portion 120 from the infrared receiving channel and the infrared transmitting channel above the infrared generating portion 110, thereby preventing the infrared light emitted by the infrared generating portion 110 from being received by the infrared receiving portion 120 before being emitted from the range hood, thereby affecting the control effect of the range hood.

[0036] In some embodiments, a first display unit 130 is further provided on the top of the PCB board 100. The first display unit 130 has a light-emitting module 131. A second display unit 140 is further provided on the top of the PCB board 100. The second display unit 140 has a light-emitting body 141 connected to the PCB board 100. There is a light-guiding channel between the light-emitting body 141 and the glass panel 400. The light-emitting module 131 and the light-emitting body 141 correspond to the glass panel 400 and have a light-transmitting window with a dark-colored shielding film. The inner side of the light-transmitting window corresponding to the second display unit 140 has a shading silk-screen layer. The shading silk-screen layer inside the light-transmitting window converges the light and marks the function. The second display unit 140 emits light through the light-emitting body 141, and the light source is transmitted to the light-transmitting window through the light-guiding channel, so that the user can distinguish the function buttons on the top of the PCB board 100 even when the visibility is low at night. The first display unit 130 is connected to the PM2.5 detection device 530, and the numerical value detected by the PM2.5 detection device 530 is displayed, which can be observed through the glass panel 400.

[0037] In some embodiments, the light-emitting module 131 is a digital tube, and the light-emitting module 131 has a light-emitting module shielding film 132, and the light-emitting module shielding film 132 has a light-transmitting area, and the light-transmitting area corresponds to the outlet of the light-guiding channel of the light-emitting module 131. A partially transparent touch film 410 is provided on the inner side of the glass panel 400, and a touch circuit is attached to display a central icon around the first display unit 130. The second display unit 140 has an elastic member 142, and the elastic member 142 is arranged on the periphery of the light-guiding channel. A light-distributing member 143 is provided on the top of the elastic member 142. A through hole is opened on the inner side of the glass panel 400 at a position corresponding to the light-guiding channel. The light-distributing member 143 is interference-fitted with the through hole, and the touch The control film 410 can control the first display unit 130. The light-distributing member 223 of the second display unit 140 extends out of the glass panel 400 through the interference fit, converges the light emitted by the light-emitting body 141 and evenly disperses it on the light-distributing member 143, preventing the light of the light-emitting body 141 from directly hitting the user's eyes. The light-distributing member 143 cooperates with the light-shielding silk-screen layer to mark the function of the touch area. When the light is poor, the light-distributing member 143 has a certain brightness to display the silk-screen. The user can identify the function of the corresponding touch area based on the silk-screen on the surface of the light-distributing member 143, and presses the corresponding light-distributing member 143 to squeeze the elastic member 142 at its bottom to press the corresponding touch area on the PCB board 100.

[0038] In other embodiments, the light-emitting module 131 is a display screen, having a light-emitting module shielding film 132, the light-emitting module shielding film 132 has a light-transmitting area, the light-transmitting area corresponds to the position of the display screen of the light-emitting module 131, the display screen is connected to the PM2.5 detection device 530, and the numerical value detected by the PM2.5 detection device 530 is directly converted into a number and displayed on the surface, and is displayed on the surface of the glass panel 400 through the light-emitting module shielding film 212 and the dark shielding film.

[0039] In some embodiments, wherein reference Figure 5, discloses a range hood, including a shell 500, which is surrounded by an inner cavity, in which an air duct and a accommodating cavity are formed, baffles 510 are arranged at the angles on both sides of the shell 500, an air curtain fan 520 and a PM2.5 detection device 530 are arranged inside the accommodating cavity, an upper support plate 200 and a lower support plate 300 clamp a PCB board 100 and are arranged at the opening of the accommodating cavity, a glass panel 400 seals the opening of the accommodating cavity, a flange is arranged at the bottom of the interface between the glass panel 400 and the shell, the bottom of the flange extends out and is rounded, when cooking, oil smoke floats upward, the air curtain fan 520 generates an air curtain to blow downward, the air curtain drives the airflow to move downward, and the air curtain moves between the flange and the shell. A vortex area is formed at the outlet of the air curtain fan 520. The rising smoke during cooking is sucked into the vortex area, and moves toward the exhaust port of the air curtain fan 520 along the vortex area, and is carried downward by the air curtain blown out of the exhaust port to prevent the smoke from rising to the glass panel 400 and polluting the glass panel 400. At this time, the airflow on the surface of the glass panel 400 moves along the bottom flange to the bottom of the shell 500 toward the air curtain and blows downward along the air curtain. The baffle 510 cooperates with the air curtain generated by the air curtain fan 520 to block the oil smoke and prevent the oil smoke from escaping. The PM2.5 detection device 530 detects the air quality at the inner wall of the shell during cooking.

[0040] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An infrared induction display box for a range hood, characterized in that: The device comprises an infrared generating unit (110) and an infrared receiving unit (120) arranged on a PCB (100), wherein the infrared generating unit (110) and the infrared receiving unit (120) are arranged close to each other, the infrared generating unit (110) has a connecting pin connected to the PCB (100), and the infrared receiving unit (120) is formed with a boss, and an infrared receiving element is provided on the boss for receiving infrared rays; and comprises a partition unit (210) which is not transparent to infrared rays, wherein the partition unit (210) is located between the infrared generating unit (110) and the infrared receiving unit (120), and the lower edge of the partition unit (210) is not higher than 1 / 2 of the height of the boss; An infrared receiving channel is provided between the infrared receiving portion (120) and the upper support box (200), and an infrared receiving hole is provided at a position corresponding to the infrared receiving channel of the upper support box (200); The upper support box (200) is provided with an infrared transparent film (240), and the infrared transparent film (240) is attached to a position corresponding to the infrared receiving hole, and the infrared transparent film has a smooth surface that can reflect a part of visible light and block a part of visible light.

2. An infrared induction display box according to claim 1, characterized in that: It also comprises an upper supporting box (200), the partition portion (210) being arranged at the bottom of the upper supporting box (200), an infrared emission channel being provided between the infrared generating portion (110) and the upper supporting box (200), and an infrared emission hole (230) being provided on the upper supporting box (200) at a position corresponding to the infrared emission channel.

3. An infrared induction display box according to claim 2, characterized in that: The upper support box (200) is provided with an infrared-transmitting film (240), the infrared-transmitting film (240) is attached to a position corresponding to the infrared emitting hole (230), a silk-screen layer is provided on the infrared-transmitting film (240), and the partition portion (210) is multi-layered and separates the infrared emitting channel and the infrared receiving channel.

4. The infrared induction display box according to claim 1, characterized in that: The invention also comprises a lower support box (300) connected to the inner side of the upper support box (200); the PCB board (100) is located between the upper support box (200) and the lower support box (300); a connecting block (270) is arranged on a side wall of the upper support box (200); a connecting buckle (310) matched with the connecting block (270) is arranged on a symmetrical side wall of the lower support box (300); and second elastic members (320) are arranged at both ends of the lower support box (300) to support the upper support box (200).

5. The infrared induction display box according to claim 4, characterized in that: The invention also comprises a glass panel (400) having an inner side surface facing the upper support box (200), a dark-colored shielding film being thermally melted on the inner side surface, an infrared emission window being provided on the glass panel (400) at a position corresponding to the infrared-transmitting film (240), a first display unit (130) being provided on the PCB board (400), the first display unit (130) having a light-emitting module (131); and a second display unit (140), the second display unit (140) having a light-emitting body (141) connected to the PCB board (100), a light-guiding channel being provided between the light-emitting body (141) and the glass panel (400); a light-transmitting window having the dark-colored shielding film being provided at the glass panel (400) corresponding to the light-emitting module (131) and the light-emitting body (141), and a light-shielding silk-screen layer being provided on the inner side surface of the light-transmitting window corresponding to the second display unit (140).

6. The infrared induction display box according to claim 5, characterized in that: The light-emitting module (131) is a digital tube, the light-emitting module (131) has a light-emitting module shielding film (132), the light-emitting module shielding film (132) has a light-transmitting area, and the light-transmitting area corresponds to the outlet of the light-guiding channel of the light-emitting module (131).

7. An infrared induction display box according to claim 6, characterized in that: A partially transparent touch film (410) is provided on the inner side of the glass panel (400), to which a touch circuit is attached to display a central icon around the first display portion (130).

8. The infrared induction display box according to claim 7, characterized in that: The light-emitting module (131) is a display screen, and the light-transmitting area corresponds to the position of the display screen of the light-emitting module (131).

9. The infrared induction display box according to claim 8, characterized in that: The second display portion (140) comprises an elastic member (142) arranged at the periphery of the light guide channel, and a light evenly distributed member (143) arranged at the top of the elastic member (142); a through hole is provided on the inner side surface of the glass panel (400) at a position corresponding to the light guide channel, and the light evenly distributed member (143) is interference-fitted with the through hole.

10. A range hood, comprising an infrared induction display box as claimed in any one of claims 4 to 9, characterized in that: The invention comprises a shell (500) which encloses an inner cavity, wherein an air duct and a receiving cavity are formed in the inner cavity, baffles (510) are arranged at the angles on both sides of the shell (500), an air curtain fan (520) and a PM2.5 detection device (530) are arranged inside the receiving cavity, the upper support box (200) and the lower support box (300) clamp the PCB board (100) and are arranged at the opening of the receiving cavity, and the glass panel (400) seals the opening of the receiving cavity.

Images