White noise meter

Abstract

The utility model relates to a white noise meter which comprises a shell, a main board is arranged in the shell, a human body induction device is arranged on the main board, a loudspeaker electrically connected with the main board is arranged in the shell, and a sound outlet hole is formed in the position, opposite to the loudspeaker, of the shell. A sound outlet hole is formed in the shell, two strip-shaped protruding blocks located on the two opposite sides of the sound outlet hole are arranged on the outer side face of the shell, a covering piece covering the sound outlet hole is arranged between the two strip-shaped protruding blocks in a sliding mode, and a driving mechanism driving the covering piece to be exposed out of the sound outlet hole or cover the sound outlet hole is arranged on the shell. The driving mechanism drives the covering piece to expose the sound outlet hole, sound of the loudspeaker is transmitted out of the sound outlet hole, the loudspeaker stops working and saves electricity after the human body induction device induces that a user leaves, and the driving mechanism drives the covering piece to cover the sound outlet hole, so that dust, hair or oil dirt and the like are prevented from blocking the sound outlet hole, and the interval time for cleaning the sound outlet hole is shortened.

Description

Technical Field

[0001] This utility model relates to the field of white noise meters, and more specifically, to a white noise meter. Background Technology

[0002] White Noise is a mind-body health app for sleep, meditation, relaxation, focus, and learning. Inspired by nature, it offers a vast library of audio content, including natural sounds, lullabies, ocean sounds, thunder, flowing water, wind, rain, insect and bird sounds, 3D ear massage, baby soothing sleep, crystal bowl healing, shamanic drum healing, and brain activation. It helps you escape the fast-paced present and enter a peaceful and quiet space, reducing anxiety and stress, maintaining focus and calmness, meditating for moments to relax your mind, getting better sleep, enjoying the rhythms of nature, and letting your mind and body merge into tranquility.

[0003] Existing white noise meters all have sound holes on their casings to allow the sound from the speakers to travel. However, when these sound holes are exposed to the external environment for extended periods, common dirt such as dust, hair, or oil can easily clog them, hindering the normal propagation of sound waves. This results in the loss of high-frequency details, muddy low frequencies, a muffled or shrill sound, noise, and damage to the balance of the white noise. This disrupts the user's immersion and can actually cause annoyance. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, a white noise meter is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a white noise meter, including a housing, a main board disposed inside the housing, a human body sensing device disposed on the main board, a speaker electrically connected to the main board disposed inside the housing, a sound outlet disposed on the housing opposite to the speaker, two strip-shaped protrusions disposed on the outer side of the housing located on opposite sides of the sound outlet, a cover slidably disposed between the two strip-shaped protrusions to cover the sound outlet, and a driving mechanism disposed on the housing to drive the cover to expose or cover the sound outlet.

[0006] Preferably, two cover members are provided, and the two cover members are symmetrically arranged around the center of the sound hole. The driving mechanism drives the two cover members to move closer to each other or further away from each other.

[0007] Preferably, the drive mechanism includes a motor, a gear, and two racks. The strip-shaped protrusion includes a first strip-shaped protrusion and a second strip-shaped protrusion. The first strip-shaped protrusion has a cavity. The two racks are disposed in the cavity and are arranged opposite to each other. The two racks are respectively connected to two cover members. The gear is disposed between the two racks and both racks mesh with the gear. The motor is disposed in the housing, and the output shaft of the motor passes through the cavity and is connected to the gear.

[0008] Preferably, a groove is provided on the surface of the second strip-shaped protrusion opposite to the first strip-shaped protrusion, and each of the two cover members is provided with a slider that slides in the groove, with the two sliders located on the side of the corresponding cover members that are close to each other.

[0009] Preferably, the cover has a filling cavity filled with sound-absorbing cotton.

[0010] Preferably, the human body sensing device is a millimeter-wave radar or a human body infrared sensor.

[0011] Preferably, the housing has a battery groove recessed inward on the side away from the cover, a battery is disposed in the battery groove, and a battery cover is provided on the housing to cover the battery groove.

[0012] Preferably, the housing is provided with a support bracket to stably support the housing.

[0013] Preferably, the housing is provided with an LED light that is electrically connected to the motherboard.

[0014] The beneficial effects of this utility model are as follows: When using this white noise meter, the drive mechanism drives the cover to expose the sound hole, and the sound from the speaker is transmitted from the sound hole. Then, the human body sensor detects whether the user has left. After the user is detected to have left, the speaker stops working, saving power. The drive mechanism then drives the cover to cover the sound hole, thereby preventing dust, hair or oil from clogging the sound hole, reducing the interval time for cleaning the sound hole, making it more convenient. Furthermore, when a user who is sensitive to sound feels uncomfortable even at the lowest volume of the speaker, the drive mechanism drives the cover to cover part of the sound hole, thereby further reducing the volume. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall front structure of an embodiment of this utility model;

[0016] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged view of region A in the middle;

[0018] Figure 4 This is a schematic diagram of the drive mechanism and the cover component according to an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the cover part exposing the sound hole in an embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the overall rear structure of an embodiment of this utility model.

[0021] Reference numerals: 1 housing, 10 sound outlet, 11 battery slot, 12 battery, 13 battery cover, 14 LED light, 2 main board, 3 human body sensor, 4 speaker, 5 first strip-shaped protrusion, 50 cavity, 6 second strip-shaped protrusion, 60 slide groove, 7 cover, 70 slider, 71 sound-absorbing cotton, 8 motor, 80 gear, 81 rack, 9 bracket. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In addition, the directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings. The directional terms are used to better and more clearly explain and understand this utility model, and are not intended to indicate or imply the necessary orientation of this utility model. Therefore, they should not be construed as limitations on this utility model.

[0023] Examples of embodiments of this utility model Figures 1 to 6 As shown, a white noise meter includes a housing 1, a main board 2 inside the housing 1, a human body sensor 3 on the main board 2, a speaker 4 electrically connected to the main board 2 inside the housing 1, a sound outlet 10 on the housing 1 opposite to the speaker 4, the speaker 4 facing the front of the housing 1, the sound outlet 10 being located on the front of the housing 1, preferably, the sound outlet 10 being composed of multiple circular through holes, two strip-shaped protrusions on opposite sides of the sound outlet 10 on the outer surface of the housing 1, a cover 7 slidably disposed between the two strip-shaped protrusions to cover the sound outlet 10, and a drive mechanism on the housing 1 for driving the cover 7 to expose or cover the sound outlet 10.

[0024] When using this white noise meter, the drive mechanism drives the cover 7 to expose the sound outlet 10, and the sound from the speaker 4 is transmitted from the sound outlet 10. Then, the human body sensor 3 senses whether the user has left. After sensing that the user has left, the speaker 4 stops working to save power. The drive mechanism then drives the cover 7 to cover the sound outlet 10, thereby preventing dust, hair or oil stains from clogging the sound outlet 10, reducing the interval time for cleaning the sound outlet 10, making it more convenient. In addition, if a user who is sensitive to sound feels uncomfortable even at the lowest volume of the speaker 4, the drive mechanism drives the cover 4 to cover part of the sound outlet 10, thereby further reducing the volume.

[0025] Further improvements, such as Figure 1 and Figure 5 As shown, there are two cover members 7, which are symmetrically arranged around the center of the sound hole 10. That is, the two cover members 7 are located on the left and right sides of the center of the sound hole 10, respectively. The right side of the left cover member 7 abuts against the left side of the right cover member 7. The driving mechanism drives the two cover members 7 to move closer to each other or further away from each other. The two cover members 7 reduce the stroke required for the cover members 7 to expose the sound hole 10, thereby avoiding interference between the cover members 7 and the housing 1 when they move.

[0026] Further improvements, such as Figure 3 and Figure 5 As shown, the driving mechanism includes a motor 8, a gear 80, and two racks 81. The strip-shaped protrusion includes a first strip-shaped protrusion 5 and a second strip-shaped protrusion 6. Both the first strip-shaped protrusion 5 and the second strip-shaped protrusion 6 extend in the left-right direction. The first strip-shaped protrusion 5 is located above the second strip-shaped protrusion 6. A cavity 50 is provided inside the first strip-shaped protrusion 5. The two racks 81 are disposed in the cavity 50 and are arranged opposite to each other. Both racks 81 extend in the left-right direction and are arranged opposite to each other in the up-down direction. The two racks 81 are respectively connected to two cover members 7. The upper rack 81... A left connecting rod is provided at the left end of the device, and the two ends of the left connecting rod are respectively connected to the upper rack 81 and the left side of the top surface of the left cover 7. A right connecting rod is provided at the right end of the lower rack 81, and the two ends of the right connecting rod are respectively connected to the lower rack 81 and the right side of the top surface of the right cover 7. The gear 80 is disposed between the two racks 81, and both racks 81 mesh with the gear 80. The left and right side walls of the first strip-shaped protrusion 5 are provided with clearance notches to allow the racks 81 to move. The motor 8 is disposed in the housing 1, and the output shaft of the motor 8 passes through the cavity 50 and connects with the gear 80.

[0027] Further improvements, such as Figure 2 , Figure 3 and Figure 4As shown, a groove 60 is provided on the surface of the second strip-shaped protrusion 6 opposite to the first strip-shaped protrusion 5, that is, a groove 60 is provided on the top surface of the second strip-shaped protrusion 6. The groove 60 extends in the left and right direction. Each of the two cover members 7 is provided with a slider 70 that slides in the groove 60. The two sliders 70 are located on the side of the corresponding cover member 7 where the two cover members are close to each other, that is, the two sliders 70 are located on the side of the bottom surface of the corresponding cover member 7 near the center of the housing 1. The sliders 70 guide the sliding of the cover member 7. At the same time, the left and right ends of the groove 60 are closed to restrict the sliders 70 from sliding out of the groove 60, thereby limiting the cover member 7 and preventing the cover member 7 from sliding out between the second strip-shaped protrusion 6 and the first strip-shaped protrusion 5.

[0028] Further improvements, such as Figure 2 and Figure 3 As shown, the cover 7 has a filling cavity, which is filled with sound-absorbing cotton 71. The sound-absorbing cotton 71 reduces the sound at the covered sound outlet 10, allowing users who are sensitive to sound to get a lower volume.

[0029] Further improvements, such as Figure 1 and Figure 2 As shown, the human body sensing device 3 is a millimeter-wave radar or a human infrared sensor. When the human body sensing device 3 is a human infrared sensor, an infrared Fresnel lens is provided on the human infrared sensor, and a clearance hole is provided on the housing 1 to expose the infrared Fresnel lens. The infrared Fresnel lens improves the sensitivity and range of the human infrared sensor, and the clearance hole prevents the housing from affecting the sensing of the human infrared sensor. Preferably, the human body sensing device 3 is a millimeter-wave radar. Millimeter-wave radar can penetrate obstacles, such as blankets and mosquito nets, and can detect stationary human bodies and micro-movements, such as sitting posture, sleeping, breathing, and turning pages. The sensing is more accurate and is not affected by changes in temperature, dust, water vapor, and light, resulting in high stability.

[0030] Further improvements, such as Figure 2 and Figure 6 As shown, the housing 1 has a battery slot 11 recessed inward on the side away from the cover 7. A battery 12 is disposed in the battery slot 11 and is electrically connected to the motherboard 2. Preferably, three batteries 12 are provided. Three batteries 12 provide more power and reduce the interval between battery replacements. The housing 1 is provided with a battery cover 13 that covers the battery slot 11. The battery cover 13 protects the battery 12 and prevents the battery 12 from falling out of the battery slot 11.

[0031] Further improvements, such as Figure 1 and Figure 6As shown, a support 9 is provided on the housing 1 to stably support the housing 1. The housing 1 is a cylindrical structure extending in the front-to-back direction. The support 9 is located at the bottom of the side wall of the housing 1. The support 9 includes a base plate and two connecting plates. The two connecting plates are respectively located on the left and right sides of the base plate. The two connecting plates are inclined towards the middle. The ends of the two connecting plates away from the base plate are connected to the housing 1. The two connecting plates and the base plate form a triangle. The triangle is more stable. The support 9 allows the white noise meter to be placed stably on the table.

[0032] Further improvements, such as Figure 1 and Figure 6 As shown, the housing 1 is provided with an LED light 14 electrically connected to the motherboard 2. The LED light 14 is located at the bottom of the housing 1 and provides lighting atmosphere to make the white noise meter achieve better results.

[0033] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A white noise meter, comprising a housing; characterized in that, The housing contains a main board; the main board contains a human body sensor; the housing contains a speaker electrically connected to the main board; the housing contains a sound outlet hole opposite to the speaker; the outer surface of the housing contains two strip-shaped protrusions on opposite sides of the sound outlet hole; a cover that slidably covers the sound outlet hole is disposed between the two strip-shaped protrusions; the housing contains a drive mechanism that drives the cover to expose or cover the sound outlet hole.

2. A white noise meter according to claim 1, characterized in that, Two cover members are provided; the two cover members are symmetrically arranged around the center of the sound hole; the driving mechanism drives the two cover members to move closer to each other or further away from each other.

3. A white noise meter according to claim 2, characterized in that, The drive mechanism includes a motor, a gear, and two racks; the strip-shaped protrusion includes a first strip-shaped protrusion and a second strip-shaped protrusion; the first strip-shaped protrusion has a cavity; the two racks are disposed in the cavity; the two racks are disposed opposite to each other; the two racks are respectively connected to two cover members; the gear is disposed between the two racks; both racks mesh with the gear; the motor is disposed in the housing; the output shaft of the motor passes through the cavity and is connected to the gear.

4. A white noise meter according to claim 3, characterized in that, The second strip-shaped protrusion has a groove on the surface opposite to the first strip-shaped protrusion; both of the cover members are provided with sliders that slide in the grooves; the two sliders are located on the side of the corresponding cover members that are close to each other.

5. A white noise meter according to claim 1, characterized in that, The cover has a filling cavity; the filling cavity is filled with sound-absorbing cotton.

6. A white noise meter according to claim 1, characterized in that, The human body sensing device is a millimeter-wave radar or a human infrared sensor.

7. A white noise meter according to claim 1, characterized in that, The housing has a battery slot recessed inward on the side away from the cover; a battery is disposed in the battery slot; and a battery cover is disposed on the housing to cover the battery slot.

8. A white noise meter according to claim 1, characterized in that, The shell is provided with a support bracket to stably support the shell.

9. A white noise meter according to claim 1, characterized in that, The housing is equipped with an LED light that is electrically connected to the motherboard.

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