Automobile headrest and automobile sound system
By setting up speaker arrays on both sides of the car's headrests, the target sound is played to the target area and the sound in other areas is offset. This solves the problem of sound interference between seating areas in the car and achieves good sound effects and privacy.
Patent Information
- Application Number
- CN202423060297.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-12-11
AI Technical Summary
There is serious interference between the sounds in different seating areas in a car, which affects the user experience. Existing technologies have failed to effectively solve the problem of speaker layout.
It adopts the design of a car headrest, with speaker arrays on both sides of the headrest. The speaker array plays the target sound to the target area and offsets the sound in other areas, reducing sound leakage.
It effectively reduces the mutual influence of sound between different seating areas in the car, improves sound quality and provides privacy, and the speaker array setting has a wide coverage area.
Smart Images
Figure CN223384345U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an automobile headrest and an automobile audio system. Background Art
[0002] A car cabin is a relatively small, enclosed space where everyone's voice can be heard by their neighbors, leaving little privacy. Furthermore, interference between passengers can become a source of noise. In a typical scenario, to allow the driver to listen to navigation voice commands while the front passenger listens to music, the current mainstream solution is to simultaneously achieve both functions through the door and dashboard speakers. However, this creates interference for both the driver and front passenger, compromising the overall experience. While some solutions exist for interior zoning, few address speaker placement.
[0003] The above information disclosed in this Background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Utility Model Content
[0004] The utility model provides a car headrest and a car audio system using the car headrest, which can reduce the mutual influence of sounds between different seat areas in the car, especially reduce the leakage of sounds in a target private area to other areas.
[0005] The utility model adopts the following technical solutions:
[0006] A car headrest comprises a main body, further comprising a first speaker array and a second speaker array provided on a left side of the main body, wherein the first speaker array comprises m speakers and the second speaker array comprises n speakers;
[0007] The car headrest further includes a third speaker array and a fourth speaker array provided on the right side of the main body, the third speaker array includes p speakers, and the fourth speaker array includes q speakers;
[0008] m, n, p, and q are all positive integers greater than 1;
[0009] Among them, the first speaker array, the second speaker array, the third speaker array and the fourth speaker array are arranged in sequence from left to right, the front of the speakers of the second speaker array and the front of the speakers of the third speaker array are opposite to each other and have a space corresponding to the human head, the front of the speakers of the first speaker array faces the outside of the car headrest, and the front of the speakers of the fourth speaker array faces the outside of the car headrest.
[0010] In a preferred embodiment, the m speakers are arranged in sequence along the up-down direction, the n speakers are arranged in sequence along the up-down direction, the p speakers are arranged in sequence along the up-down direction, and the q speakers are arranged in sequence along the up-down direction.
[0011] In a preferred embodiment, the vibration axes of the speakers of the first speaker array and the vibration axes of the speakers of the second speaker array are parallel to each other, and the speakers of the two are oriented in opposite directions; the vibration axes of the speakers of the third speaker array and the vibration axes of the speakers of the fourth speaker array are parallel to each other, and the speakers of the two are oriented in opposite directions.
[0012] In a preferred embodiment, m and n are equal, and each speaker of the first speaker array and one speaker of the second speaker array correspond to and are parallel to each other.
[0013] In a more preferred embodiment, p and q are equal, and each speaker of the third speaker array and one speaker of the fourth speaker array correspond to and are parallel to each other.
[0014] In a preferred embodiment, m is smaller than n, and p is larger than q.
[0015] In a preferred embodiment, 2≤m≤10, 3≤n≤10, 3≤p≤10, and 2≤q≤10. In a more preferred embodiment, m is between 2 and 6, n is between 3 and 6, p is between 3 and 6, and q is between 2 and 6.
[0016] In a preferred embodiment, m=q, n=p.
[0017] In a preferred embodiment, the left side portion and the right side portion of the main body protrude forward relative to the middle portion of the main body.
[0018] In a preferred embodiment, the speakers of the first speaker array face left, the speakers of the second speaker array face right, the speakers of the third speaker array face left, and the speakers of the fourth speaker array face right.
[0019] The utility model also adopts the following technical solutions:
[0020] A car audio system comprises a plurality of car headrests, wherein a first car headrest is configured to be installed in the main driving area of the car, and a second car headrest is configured to be installed in the co-driving area of the car.
[0021] The present invention adopts the above solution, which has the following advantages compared with the prior art:
[0022] The car headrest of the present invention plays a target sound to a target area (e.g., the position of the driver's ears) through the second and third speaker arrays, and plays a canceling sound outside the target area through the first and fourth speaker arrays, so as to cancel out the sound transmitted from other areas, reduce the sound from other areas (e.g., the neighboring seat) that propagates to the target area, and thus reduce the mutual influence of sound between different seating areas in the car. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 Schematic diagram of the distribution of a car audio system according to an embodiment of the present utility model.
[0025] Figure 2 It is a three-dimensional diagram of a first automobile headrest according to an embodiment of the present utility model.
[0026] Figure 3 The figure is a top view of a first automobile headrest according to an embodiment of the present utility model.
[0027] Figure 4 This is a front view of a first automobile headrest according to an embodiment of the present utility model.
[0028] Figure 5 It is a three-dimensional view of a second automobile headrest according to an embodiment of the present utility model.
[0029] Figure 6 It is a top view of a second car headrest according to an embodiment of the present utility model.
[0030] Figure 7 This is a front view of a second car headrest according to an embodiment of the present utility model.
[0031] Figure 8 4 is a structural diagram of a loudspeaker according to an embodiment of the present utility model.
[0032] Figure 9 4 is a graph showing the sound energy ratio of the first automobile headrest according to an embodiment of the present invention.
[0033] In the above figures,
[0034] 1. Car headrest; 10. Main body; 101. Left side; 102. Right side; 110. Speaker; 1101. Diaphragm;
[0035] 111. A first speaker array; 112. A second speaker array; 113. A third speaker array; 114. A fourth speaker array. DETAILED DESCRIPTION
[0036] The following describes in detail preferred embodiments of the present invention in conjunction with the accompanying drawings to make the advantages and features of the present invention more easily understood by those skilled in the art. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
[0037] This embodiment provides a car headrest and a car audio system including multiple car headrests, which are used to construct one or more private areas in a car, reduce the leakage of sound in the target private area to other areas, and reduce the mutual influence of sound between different seating areas in the car.
[0038] Reference Figure 1 As shown, the car audio system includes multiple headrests 1 with built-in speaker arrays. Specifically, the car cabin is divided into multiple areas, including at least a driver's seat area and a passenger seat area, and may also include multiple rear passenger areas. Each area is equipped with a headrest 1, which is specifically located on the top of the car seat backrest. The first headrest 1 is configured to be installed in the driver's seat area, the second headrest 1 is configured to be installed in the passenger seat area, and each rear passenger area is also equipped with a headrest 1.
[0039] Combine 2 to Figure 8 As shown, each automobile headrest 1 includes a main body 10 having a left side portion 101 and a right side portion 102 that protrude forward from the center. A recessed area (space) is formed between the left and right sides 101, 102 to accommodate a person's head. When a person sits in a car seat, their ears are located at a position P adjacent to the left and right sides 101, 102 of the headrest main body 10.
[0040] The car headrest 1 also includes a first speaker array 111 and a second speaker array 112 disposed on the left side 101 of the main body 10. The first speaker array 111 includes m speakers 110, and the second speaker array 112 includes n speakers 110. Both m and n are positive integers greater than 1. In one example, m and n are equal, and each speaker 110 of the first speaker array 111 and a speaker 110 of the second speaker array 112 correspond to each other and are parallel. Figures 2 to 4In another example, m is less than n, and each speaker 110 of the first speaker array 111 and one speaker 110 of the second speaker array 112 correspond to each other and are level, as shown in FIG. Figures 5 to 7 shown.
[0041] The car headrest 1 further includes a third speaker array 113 and a fourth speaker array 114 disposed on the right side 102 of the main body 10. The third speaker array 113 includes p speakers 110, and the fourth speaker array 114 includes q speakers 110. Both p and q are positive integers greater than 1. In one example, p and q are equal, and each speaker 110 of the third speaker array 113 corresponds to and is aligned with a speaker 110 of the fourth speaker array 114. Figures 2 to 4 In another example, q is less than p, and each speaker 110 of the fourth speaker array 114 corresponds to and is level with one speaker 110 of the third speaker array 113, as shown in FIG. Figures 5 to 7 shown.
[0042] The first speaker array 111, the second speaker array 112, the third speaker array 113, and the fourth speaker array 114 are arranged in sequence from left to right. The front faces of the speakers 110 of the second speaker array 112 and the front faces of the speakers 110 of the third speaker array 113 are opposite to each other and have a space corresponding to a human head. The front faces of the speakers 110 of the first speaker array 111 face the outside of the vehicle headrest 1, and the front faces of the speakers 110 of the fourth speaker array 114 face the outside of the vehicle headrest 1. The vibration axes of the speakers 110 of the first speaker array 111 and the vibration axes of the speakers 110 of the second speaker array 112 are parallel to each other, and the speakers 110 of the two speakers face opposite directions. The vibration axes of the speakers 110 of the third speaker array 113 and the vibration axes of the speakers 110 of the fourth speaker array 114 are parallel to each other, and the speakers 110 of the two speakers face opposite directions.
[0043] The following combination Figure 8 The meanings of the above terms related to the speaker 110 are described in detail. Figure 8As shown, the loudspeaker 110 is specifically a dynamic loudspeaker 110, which includes a vibration system and a driving system for driving the vibration system to vibrate and produce sound, and the vibration system and the driving system are arranged in a bracket. The vibration system mainly includes a diaphragm 1101 and a voice coil connected to the diaphragm 1101. After the voice coil receives the audio electrical signal, it generates electromagnetic induction with the magnetic circuit of the driving system, so that it can vibrate back and forth along the center line of the voice coil, thereby driving the diaphragm 1101 to reciprocate to produce sound. In this article, the "vibration axis of the loudspeaker 110" refers to the direction of the reciprocating vibration of the diaphragm 1101 and the voice coil, specifically the center line of the voice coil; the "direction" of the loudspeaker 110 specifically refers to the direction facing the front of the diaphragm 1101, as well as the radiation direction of the sound. The diaphragm 1101 has a front and a back, and the front is the side surface facing the outside of the loudspeaker 110.
[0044] The speakers 110 of the first speaker array 111 face left, and the speakers 110 of the second speaker array 112 face right. The speakers 110 of the third speaker array 113 face left, and the speakers 110 of the fourth speaker array 114 face right. The speaker arrays 110 of multiple car headrests 1 in the same row of seats are aligned with each other.
[0045] In this embodiment, m speakers 110 are arranged in a vertical direction, n speakers 110 are arranged in a vertical direction, p speakers 110 are arranged in a vertical direction, and q speakers 110 are arranged in a vertical direction. In one embodiment, 2≤m≤10, 3≤n≤10, 3≤p≤10, and 2≤q≤10. Furthermore, m is between 2 and 6, n is between 3 and 6, p is between 3 and 6, and q is between 2 and 6.
[0046] Performance testing:
[0047] The goal is to make the main driver's seat a private area. A test point is set in the passenger's seat, and the sound P at the corresponding passenger's ears in the passenger's seat is collected through a microphone. During the test, the sound source (which can be played through other speakers 110, or through the second speaker array 112 and the third speaker array 113 of the car headrest 1 in this area) is located in the main driver's seat. No sound source is set in the passenger's seat, and the collected sound is the sound transmitted from the main driver's seat to the passenger's seat.
[0048] In the mode where the first speaker array 111, the second speaker array 112, the third speaker array 113 and the fourth speaker array 114 of the car headrest 1 in the main driver's area are all working, the sound of each speaker array 110 of the car headrest 1 in the main driver's area before and after working is collected at P in the passenger seat area, and the sound energy ratio is obtained by subtraction. The sound energy ratio curve is shown as follows: Figure 9Sound energy ratio = the decibel of the sound collected in the passenger area before the array of speakers 110 of the headrest 1 of the car is in operation - the decibel of the sound collected in the passenger area after the array of speakers 110 of the headrest 1 of the car is in operation.
[0049] In a mode where only the second speaker array 112 and the third speaker array 113 of the car headrest 1 in the main driver's seat are working and the first speaker array 111 and the fourth speaker array 114 are not working, the sound of each speaker array 110 of the car headrest 1 in the main driver's seat is collected at point P in the passenger seat before and after the operation, and the sound energy ratio is obtained by subtraction. The sound energy ratio curve is shown as follows: Figure 9 Indicated by the dotted line.
[0050] Depend on Figure 9 It can be seen that when the inner and outer speaker arrays 110 of the car headrest 1 are both working, the sound leakage from the target privacy area to other areas can be significantly reduced, and the sound interference between different areas in the car can be reduced.
[0051] The car headrest 1 of this embodiment plays the target sound to the target area (such as the binaural position of the main driver) through the second speaker array 112 and the third speaker array 113 to obtain better sound effects, and plays the offset sound outside the target area through the first speaker array 111 and the fourth speaker array 114 (the specific principle can be found in patent CN2019101282309) to offset the sound transmitted from other areas and reduce the sound from other areas (such as the neighboring seat) transmitted to the target area, thereby reducing the mutual influence of the sound between different seat areas in the car. While having good sound effects, it also has a good privacy effect. The speakers arranged in an array can obtain a larger sound field coverage range and can control a wider area.
[0052] As shown in this specification and claims, the terms "comprise" and "include" only indicate the inclusion of the steps and elements that have been explicitly identified, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.
[0053] It is further understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar.
[0054] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.
[0055] The above embodiment is only for illustrating the technical concept and features of the present invention and is a preferred embodiment. Its purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention.
Claims
1. A car headrest, comprising a main body, characterized in that: The car headrest further comprises a first speaker array and a second speaker array provided on the left side of the main body, wherein the first speaker array comprises m speakers and the second speaker array comprises n speakers; The car headrest further includes a third speaker array and a fourth speaker array provided on the right side of the main body, the third speaker array includes p speakers, and the fourth speaker array includes q speakers; m, n, p, and q are all positive integers greater than 1; Among them, the first speaker array, the second speaker array, the third speaker array and the fourth speaker array are arranged in sequence from left to right, the front of the speakers of the second speaker array and the front of the speakers of the third speaker array are opposite to each other and have a space corresponding to the human head, the front of the speakers of the first speaker array faces the outside of the car headrest, and the front of the speakers of the fourth speaker array faces the outside of the car headrest.
2. The automobile headrest according to claim 1, characterized in that: The m speakers are arranged in sequence along the up-down direction, the n speakers are arranged in sequence along the up-down direction, the p speakers are arranged in sequence along the up-down direction, and the q speakers are arranged in sequence along the up-down direction.
3. The automobile headrest according to claim 1, characterized in that: The vibration axes of the speakers of the first speaker array and the vibration axes of the speakers of the second speaker array are parallel to each other, and the speakers of the two are oriented in opposite directions; the vibration axes of the speakers of the third speaker array and the vibration axes of the speakers of the fourth speaker array are parallel to each other, and the speakers of the two are oriented in opposite directions.
4. The automobile headrest according to claim 1, characterized in that: m and n are equal, and each speaker of the first speaker array and one speaker of the second speaker array correspond to each other and are parallel to each other.
5. The automobile headrest according to claim 1 or 4, characterized in that: p and q are equal, and each speaker of the third speaker array and one speaker of the fourth speaker array correspond to and are equal to each other.
6. The automobile headrest according to claim 1, characterized in that: m is less than n, and p is greater than q.
7. The automobile headrest according to claim 1, characterized in that: 2≤m≤10, 3≤n≤10, 3≤p≤10, 2≤q≤10.
8. The automobile headrest according to claim 1, characterized in that: The left side portion and the right side portion of the main body protrude forward relative to the middle portion of the main body.
9. The automobile headrest according to claim 1 or 8, characterized in that: The speakers of the first speaker array face left, the speakers of the second speaker array face right, the speakers of the third speaker array face left, and the speakers of the fourth speaker array face right.
10. A car audio system, characterized in that: The invention comprises a plurality of car headrests according to any one of claims 1 to 9, wherein the first car headrest is configured to be installed in the main driving area of the car, and the second car headrest is configured to be installed in the co-driver area of the car.