Intelligent glasses capable of reducing sound leakage

Abstract

The invention provides a pair of intelligent glasses capable of reducing sound leakage, which comprises a glasses frame and glasses legs, the two sides of the glasses frame are respectively provided with one glasses leg, at least one glasses leg is internally provided with a bone vibrator module, each glasses leg is internally provided with a vibrator cavity, the vibrator cavity is internally provided with the bone vibrator module, and the bone vibrator module is arranged in the vibrator cavity. An air leakage hole is formed in the cavity wall of one side, facing the other glasses leg, of the vibrator cavity, one end, deviating from the other glasses leg, of the bone vibrator module is communicated with the air leakage hole, and the surface, facing the other glasses leg, of the bone vibrator module is close to the cavity wall of the vibrator cavity close to the other glasses leg; and the air leakage hole is arranged in a manner of deviating from the close area of the bone vibrator module and the cavity wall of the vibrator cavity. Through a bone conduction design scheme, external leakage sound is reduced; furthermore, air holes are formed in the periphery of the bone vibrator diaphragm, opposite-phase sound is conducted to the front face, positive-phase sound on the front face and positive-phase sound on the front face are mutually counteracted through the phase counteracting principle, and leaked sound is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent wearable devices, and in particular to intelligent glasses capable of reducing sound leakage. Background Art

[0002] The popularity of wearable electronic products has greatly improved human work efficiency and entertainment. Smart glasses are the representative of these products. Producing high-quality sound in a small space is a huge challenge. Conventional smart glasses use a micro-speaker cavity design, which has high sound efficiency but insufficient bandwidth. In addition, the closed cavity design will cause a large amount of sound leakage, which cannot protect personal privacy and greatly interferes with the surrounding environment. To solve the above problems, bone conduction solutions using bone vibrator modules for sound playback have appeared on the market. The essence of bone conduction sound playback is that part of the bone vibrator module is closely attached to the facial skin to transmit the sound to the facial bones, and then from the facial bones to the inner ear cochlea, so that the human ear perceives the sound. The other part of the bone vibrator module diaphragm vibrates to produce sound in the air, which is transmitted from the air to the cochlea to be perceived by people. However, there will still be some sound leakage, which is not conducive to protecting privacy. In order to further eliminate sound leakage, smart glasses using two bone vibrators with opposite acoustic phases have emerged. For example, as shown in the patent document with publication number CN115734132A, the acoustic phase of a positive bone vibrator is canceled out by an anti-phase bone vibrator. Two bone vibrators are needed on one side and four bone vibrators are needed on both sides, which greatly increases the production cost. Summary of the invention

[0003] To solve the above problems, an object of the present invention is to provide a smart glasses that reduces sound leakage.

[0004] The present invention is implemented by the following method: a pair of smart glasses for reducing sound leakage, comprising a frame and temples, wherein a temple is respectively installed on both sides of the frame, wherein at least one of the temples is installed with a bone vibrator module, a vibrator cavity is provided in the temple, the bone vibrator module is installed in the vibrator cavity, an air leakage hole is opened on the cavity wall of the vibrator cavity facing the other temple, one end of the bone vibrator module away from the other temple is connected with the air leakage hole, the surface of the bone vibrator module facing the other temple is close to the cavity wall of the vibrator cavity close to the other temple, and the air leakage hole is arranged away from the area where the bone vibrator module is close to the cavity wall of the vibrator cavity. Preferably, the bone vibrator module comprises a vibrator unit and a vibrator shell, the vibrator shell is connected to the cavity wall of the vibrator cavity close to the other temple, the vibrator unit is arranged in the vibrator shell, and a sound outlet hole is opened on the surface of the vibrator shell.

[0005] Preferably, a gap is formed between the vibrator shell and the cavity wall of the vibrator cavity facing away from the other temple, and a gap is formed between the vibrator shell and the cavity wall of the vibrator cavity on the front side and / or rear side along the axial direction of the temple.

[0006] Preferably, a plurality of air leakage holes are provided, and the air leakage holes are communicated with the gaps between the vibrator housing and the front or rear cavity walls of the vibrator cavity along the axial direction of the temple.

[0007] Preferably, the sound outlet holes are arranged on a side of the vibrator housing facing the other temple and a side away from the other temple.

[0008] Preferably, the vibrator shell has a side facing the other temple and a side away from the other temple provided with hanging patterns, the hanging patterns are connected to hang the vibrator monomer, and the sound outlet is located between the hanging patterns.

[0009] Preferably, the invention further comprises a control circuit board arranged in the frame or the temples of the glasses, wherein the control circuit board is communicatively connected with the bone vibrator module.

[0010] Preferably, the cavity wall of the vibrator cavity facing the other temple is made of flexible material, and the vibrator housing is connected to the flexible material.

[0011] Preferably, the air leakage hole is opened on the flexible material.

[0012] Preferably, the vibrator cavity is dug from one side of the temple toward the other temple to a side away from the other temple, and the flexible material covers the side of the vibrator cavity toward the other temple.

[0013] The beneficial effects of the present invention are as follows: the present invention provides a smart glasses for reducing sound leakage. Compared with the prior art, the present invention has at least the following technical effects: 1. By opening an air vent on the side of the vibrator cavity facing the head, the air vent is connected to the back of the bone vibrator module, so that the acoustic phase of the bone vibrator module that is in contact with the front of the human face is 0 degrees, and on the contrary, the acoustic phase of the back vibration is 180 degrees. Since the sound waves generated by the bone vibrator module are leaked from the air vent connected to it and diffracted to the front, the two acoustic phases are completely opposite, and the sound amplitude cancellation is close to 0, that is, no sound is generated. This effect is utilized to greatly reduce sound leakage, protect personal privacy, and reduce external interference. The frequency of bone conduction vibration is low, the bandwidth is wide, the sound quality restoration is better, and the sound quality is further improved. In this case, a single bone vibrator module is used to achieve positive and negative phase cancellation of sound, which greatly reduces the production cost compared to the sound phase cancellation of positive phase bone vibrator and negative phase bone vibrator. 2. Sound outlet holes are provided on the front and back of the vibrator shell, so that the sound emitted from the back of the vibrator unit can be diffracted to the vent hole and discharged, while the front side is in contact with the cavity wall of the vibrator cavity and directly transmitted to the front of the face through the cavity wall. The two are in opposite phases and can cancel each other out to reduce sound leakage. 3. There is a gap between the back of the vibrator shell and the cavity wall of the vibrator cavity away from the other temple, and there is a gap between the vibrator shell and the cavity wall of the vibrator cavity on the front and / or rear sides along the axial direction of the temple to form a channel connecting the vent hole and the back of the vibrator unit, so that the sound emitted from the back of the vibrator unit can be diffracted along the channel to the vent hole in contact with the face on the front side, achieving phase cancellation with the sound emitted from the front of the vibrator unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a pair of smart glasses for reducing sound leakage of the present invention.

[0015] Figure 2 It is another structural schematic diagram of the smart glasses for reducing sound leakage of the present invention.

[0016] Figure 3 It is a schematic diagram of the state in which the bone vibrator module of the present invention is installed in the vibrator cavity.

[0017] Figure 4 It is a schematic diagram of propagation of positive and negative sound phases of the present invention.

[0018] Explanation of the accompanying drawings: 1. Frame; 2. Temple; 21. Vibrator cavity; 3. Bone vibrator module; 31. Vibrator monomer; 32. Vibrator shell; 33. Sound outlet hole; 34. Suspension pattern; 4. Air vent; 5. Flexible material; 6. Control circuit board. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] See also Figures 1 to 4 A pair of smart glasses for reducing sound leakage, comprising a frame 1 and temples 2, wherein a temple 2 is respectively installed on both sides of the frame 1, wherein at least one of the temples 2 is installed with a bone vibrator module 3, a vibrator cavity 21 is provided in the temple 2, the bone vibrator module 3 is installed in the vibrator cavity 21, an air leakage hole 4 is opened on the cavity wall of the vibrator cavity 21 facing the other temple 2, one end of the bone vibrator module 3 away from the other temple 2 is connected with the air leakage hole 4, the surface of the bone vibrator module 3 facing the other temple 2 is close to the cavity wall of the vibrator cavity 21 close to the other temple 2, and the air leakage hole 4 is arranged away from the area where the bone vibrator module 3 is close to the cavity wall of the vibrator cavity 21. By opening an air vent 4 on the side of the vibrator cavity 21 facing the head, the air vent 4 maintains the balance of air pressure inside and outside the vibrator cavity 21, and is also conducive to the transmission of internal sound to the outside. The air vent 4 is connected to the back of the bone vibrator module 3, so that the acoustic phase of the bone vibrator module 3 that is in contact with the front of the face is 0 degrees, and the acoustic phase of the back vibration is 180 degrees. Since the sound waves generated by the bone vibrator module 3 are diffracted from the air vent 4 connected to it to the front, the two sound phases are completely opposite, and the sound amplitude cancellation is close to 0, that is, no sound is generated. This effect is used to greatly reduce sound leakage, protect personal privacy, and reduce external interference. The frequency of bone conduction vibration is low, the bandwidth is wide, and the sound quality restoration is better, which further improves the sound quality. In this case, the reverse phase sound wave on the back of a single bone vibrator module 3 is transmitted through the air to the positive phase sound wave on the front of the bone vibrator module 3 for sound cancellation. The structure is simple. Compared with the positive phase bone vibrator and the reverse phase bone vibrator for sound phase cancellation, a single vibrator can cancel out sound leakage, which greatly reduces the production cost.

[0021] See also Figures 1 to 4 Preferably, the bone vibrator module 3 includes a vibrator unit 31 and a vibrator shell 32. The vibrator shell 32 is connected to the cavity wall of the vibrator cavity 21 near the other temple 2. The vibrator unit 31 is arranged in the vibrator shell 32. A sound outlet hole 33 is opened on the surface of the vibrator shell 32. The sound outlet holes 33 are arranged on the front and back of the vibrator shell 32, so that the sound generated on the back of the vibrator unit 31 can be diffracted to the air vent 4 for discharge, and the front side is in contact with the cavity wall of the vibrator cavity 21 and directly transmitted to the front of the face through the cavity wall. The two phases are opposite and can therefore cancel each other out to reduce sound leakage.

[0022] See also Figures 1 to 4Preferably, there is a gap between the vibrator shell 32 and the cavity wall of the vibrator cavity 21 away from the other temple 2, and there is a gap between the vibrator shell 32 and the cavity wall of the vibrator cavity 21 on the front side and / or the rear side along the axial direction of the temple 2. There is a gap between the back of the vibrator shell 32 and the cavity wall of the vibrator cavity 21 away from the other temple 2, and there is a gap between the vibrator shell 32 and the cavity wall of the vibrator cavity 21 on the front side and / or the rear side along the axial direction of the temple 2, so as to form a channel connecting the air leakage hole 4 and the back of the vibrator monomer 31, so that the sound emitted from the back of the vibrator monomer 31 can be diffracted along the channel to the air leakage hole 4 on the front side that fits the face, so as to achieve phase cancellation with the sound emitted from the front side of the vibrator monomer 31.

[0023] See also Figures 1 to 4 Preferably, the air leakage holes 4 are provided in plurality, and the air leakage holes 4 are connected with the gap between the vibrator housing 32 and the vibrator cavity 21 along the front or rear side of the axial direction of the temple 2. The sound emitted by the plurality of air leakage holes 4 together has a better effect of offsetting sound leakage, and preferably, air leakage holes 4 can be provided on the front and rear sides of the temple 2 in the axial direction. Through the bone conduction design, the external leakage sound is reduced; further, holes are punched around the bone vibrator diaphragm (flexible material 5), and the leakage sound is greatly reduced through the phase cancellation principle.

[0024] See also Figures 1 to 4 Preferably, the sound outlet holes 33 are provided on one side of the vibrator housing 32 facing the other temple 2 and the other side away from the other temple 2. It is convenient for the vibrator monomer 31 to emit sound through the front sound outlet hole 33 and the back sound outlet hole 33 respectively, forming a 0° sound phase and a 180° sound phase.

[0025] See also Figures 1 to 4 Preferably, the vibrator housing 32 has a side facing the other temple 2 and a side facing away from the other temple 2 with hanging patterns 34, the hanging patterns 34 connect and hang the vibrator monomer 31, and the sound outlet 33 is located between the hanging patterns 34. Provide the linear support conditions of electromagnetic induction between the vibrator monomer 31 coil and the magnet (vibrator housing 32), so that the vibrator monomer 31 can vibrate and make sound.

[0026] See also Figures 1 to 4Preferably, it also includes a control circuit board 6 arranged in the frame 1 or the temple 2, and the control circuit board 6 is connected to the bone vibrator module 3. The control circuit board 6 is provided with a line communication module, an MCU module, a power amplifier module, an optical engine module, a charging module, a battery module, a key module, a touch module, an infrared sensing module, etc. The MCU module is connected to the line communication module power amplifier module, the optical engine module, the charging module, the battery module, the key module, the touch module, the infrared sensing module and the bone vibrator module 3, and the MCU module and the line communication module power amplifier module, the optical engine module, the charging module, the battery module, the key module, the touch module, the infrared sensing module, etc. are all mature equipment purchased on the market, and no specific protection requirements are made.

[0027] See also Figures 1 to 4 Preferably, the cavity wall of the vibrator cavity 21 facing the other temple 2 is made of a flexible material 5, and the vibrator housing 32 is connected to the flexible material 5. It is convenient for the sound from the front of the vibrator unit 31 to be directly transmitted to the human bone through the flexible material 5. The preferred flexible material 5 includes silicone materials, rubber, such as PU, TPU, EPDM, NBR, etc., but is not limited thereto.

[0028] See also Figures 1 to 4 Preferably, the air leakage hole 4 is provided on the flexible material 5. It is convenient to process the air leakage hole 4 first and then assemble, which reduces the processing difficulty. Of course, the air leakage hole 4 can also be provided on the side wall of the vibrator cavity 21 in the temple 2 facing the face of the person, and is not located on the flexible material 5.

[0029] See also Figures 1 to 4 Preferably, the vibrator cavity 21 is excavated from one side of the temple 2 toward the other temple 2 to the side away from it, and the flexible material 5 covers the side of the vibrator cavity 21 toward the other temple 2. It is convenient to load the bone vibrator module 3 into the vibrator cavity 21. The flexible material 5 can be connected to the temple 2 by ultrasonic welding or the like, and the vibrator housing 32 can be fixed on the flexible material 5, and then the side of the flexible material 5 equipped with the vibrator module is placed toward the vibrator cavity 21 to complete the packaging. Of course, the entire bone vibrator module 3 and the flexible material 5 can also be installed in a shell, and then the shell as a whole can be installed in the vibrator cavity 21, and it is only necessary to leave a channel for the sound phase propagation on the back of the bone vibrator module 3 in the shell.

[0030] The present invention has the following working principle: The bone conduction scheme is adopted to use the bone vibrator module 3 for sound reproduction. The essence of bone conduction sound reproduction is that part of the bone vibrator module 3 is closely attached to the facial skin to transmit the sound to the facial bones, and then the facial bones are transmitted to the inner ear cochlea, so that the human ear perceives the sound. The other part of the bone vibrator module 3 diaphragm vibrates to generate sound in the air, which is transmitted from the air to the cochlea and perceived by the human body. In order to reduce the sound conducted by air, the flexible material 5 on the vibrating bonding surface of the bone vibrator monomer 31 is further used to design the venting hole 4, so that the sound phase on the back of the diaphragm of the bone vibrator monomer 31 is diffracted to the front sound phase through the gap of the vibrator cavity 21 and the venting hole 4 to offset the sound phase, thereby greatly reducing sound leakage, protecting personal privacy, and reducing interference with the external environment. Since the resonant frequency of the bone vibrator module 3 is lower than that of a conventional micro speaker, the bone vibrator module 3 is better than a conventional micro speaker in the effective bandwidth of reproduction, and the sound quality is also greatly improved. The product starts to work normally after the power button is pressed. The MCU module will transmit the sound information to the optical lens through the optical engine, and the background music will amplify the signal through the power amplifier and transmit it to the bone vibrator module 3. The bone vibrator unit 31 will vibrate, and the sound phase of the vibration in contact with the front of the face is 0 degrees, while the sound phase of the vibration on the back is 180 degrees. Since there are openings on the surface of the soft material that seals the bone vibrator and the cavity, the sound waves generated inside will diffract to the front. The two sound phases are completely opposite, and the sound amplitude cancellation is close to 0, that is, there is no sound leakage.

[0031] Several points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, and can be mechanical or electrical connections, or internal connectivity between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change.

[0032] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0033] Finally, the above is only a preferred implementation of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

[0034] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should also be regarded as within the scope of protection of the present invention.

Claims

1. A pair of smart glasses for reducing sound leakage, comprising a frame and temples, wherein a temple is installed on each side of the frame, wherein at least one of the temples is installed with a bone vibrator module, characterized in that: A vibrator cavity is provided in the temple, and the bone vibrator module is installed in the vibrator cavity. An air leakage hole is opened on the cavity wall of the vibrator cavity facing the other temple, and one end of the bone vibrator module facing away from the other temple is connected with the air leakage hole. The surface of the bone vibrator module facing the other temple is close to the cavity wall of the vibrator cavity of the other temple, and the air leakage hole is arranged away from the area where the bone vibrator module is close to the cavity wall of the vibrator cavity.

2. The smart glasses for reducing sound leakage according to claim 1, characterized in that: The bone vibrator module comprises a vibrator unit and a vibrator shell. The vibrator shell is connected to the cavity wall of the vibrator cavity close to the other temple. The vibrator unit is arranged in the vibrator shell. A sound outlet hole is opened on the surface of the vibrator shell.

3. The smart glasses for reducing sound leakage according to claim 2, characterized in that: There is a gap between the vibrator shell and the cavity wall of the vibrator cavity facing away from the other temple, and there is a gap between the vibrator shell and the cavity wall of the vibrator cavity on the front side and / or rear side along the axial direction of the temple.

4. The smart glasses for reducing sound leakage according to claim 3, characterized in that: A plurality of air leakage holes are provided, and the air leakage holes are communicated with the gaps between the vibrator housing and the front side or rear side cavity wall of the vibrator cavity along the axial direction of the temple.

5. The smart glasses for reducing sound leakage according to claim 2, characterized in that: The sound outlet holes are arranged on one side of the vibrator housing facing the other temple and one side away from the other temple.

6. The smart glasses for reducing sound leakage according to claim 5, characterized in that: The vibrator housing has a side facing the other temple and a side facing away from the other temple provided with hanging lines, the hanging lines are connected to hang the vibrator monomer, and the sound outlet is located between the hanging lines.

7. The smart glasses for reducing sound leakage according to claim 1, characterized in that: It also includes a control circuit board arranged in the frame or the temples, and the control circuit board is communicatively connected with the bone vibrator module.

8. The smart glasses for reducing sound leakage according to claim 2, characterized in that: The cavity wall of the vibrator cavity facing the other temple is made of flexible material, and the vibrator housing is connected to the flexible material.

9. The smart glasses for reducing sound leakage according to claim 8, characterized in that: The air leakage hole is arranged on the flexible material.

10. The smart glasses for reducing sound leakage according to claim 8, characterized in that: The vibrator cavity is dug from one side of the temple toward the other temple to a side away from the other temple, and the flexible material covers the side of the vibrator cavity toward the other temple.

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