Headphone device

Abstract

A headphone device includes a housing, a sound generating device, and a first shielding device. The sound generating device includes a first speaker, the first speaker includes a diaphragm, the diaphragm includes a first sound emitting surface and a second sound emitting surface, the first sound emitting surface faces the outside of the housing, and the second sound emitting surface faces away from the first sound emitting surface. The first shielding device includes a first part, a second part, a first surface and a second surface, the first surface faces the first sound emitting surface, the second surface faces away from the first surface, the first part is between the first surface and the second surface, the first part is fixed to the cover plate, and the second part faces away from the first part and faces the outside of the housing.

Description

Technical Field

[0001] The present invention relates to a headphone device, and more particularly to a headphone device that uses an acoustic lens to improve sound quality. Background Art

[0002] The sound waves generated by a speaker are spherical waves. When listening to the sound of the speaker indoors, since the distance between the speaker and the human ear is very far, in this case, the curvature of the spherical wave becomes larger. When reaching the human ear, the spherical wave approaches a plane wave. However, for a headphone device with a front positioning feature, since the headphone device is near the human ear, the sound waves will reach the human ear in the form of spherical waves, and the balance between bass and treble will change, thereby affecting the sound quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a headphone device that, in view of the above-mentioned defects of the headphone device in the prior art, delays the propagation of sound waves at the edge by means of an acoustic lens, so that the sound waves are closer to plane waves when reaching the human ear.

[0004] The technical solution adopted by the present invention to solve its technical problems is to provide a headphone device including a housing, a sound generating device, and a first shielding device. The housing includes a housing body and a cover plate. The cover plate includes a first surface and a second surface. The first surface faces the housing body and is combined with the housing body to form an internal space of the housing body. The second surface faces away from the first surface and is far from the housing body to the outside. The sound generating device includes a first speaker. The first speaker includes a diaphragm. The diaphragm includes a first sound generating surface and a second sound generating surface. The first sound generating surface faces the outside, and the second sound generating surface faces away from the first sound generating surface. The first shielding device includes a first part, a second part, a first surface, and a second surface. The first surface faces the first sound generating surface, the second surface faces away from the first surface, the first part is between the first surface and the second surface, the first part is fixed to the cover plate, the second part faces away from the first part, and is far from the cover plate and faces the outside.

[0005] Wherein the sound generating device further includes a second speaker and a third speaker. The projection area of the second speaker on the cover plate has a first center point, and the projection area of the third speaker on the cover plate has a second center point. The perpendicular bisecting plane of the connection line between the first center point and the second center point passes through the first speaker.

[0006] The headphone device of the present invention may further include a second shielding device. The cover plate further includes a support member. The support member includes an end portion. The end portion is connected to the second surface of the cover plate. The second shielding device includes a third part and a fourth part. The third part is fixed to the end portion of the support member, and the fourth part is arranged facing away from the third part and is far from the end portion.

[0007] The second shielding device is disposed between the first shielding device and the diaphragm of the first speaker. The first sound-emitting surface of the diaphragm of the first speaker faces both the first shielding device and the second shielding device, and the first sound-emitting surface is closer to the second shielding device and farther from the first shielding device.

[0008] The ratio of the width to the height of the first shielding device ranges from 2.57 to 3.43, and the ratio of the width to the height of the second shielding device ranges from 2.61 to 3.47.

[0009] The sound-emitting device further includes a magnetic circuit system. The magnetic circuit system includes a magnet which has a third surface and a fourth surface. The third surface of the magnet faces the second sound-emitting surface of the diaphragm, and the fourth surface of the magnet faces away from the third surface of the magnet. The third surface of the magnet forms an angle less than 90 degrees with the first surface of the first shielding device.

[0010] Alternatively, the earphone device of the present invention includes a housing, a sound-emitting device, and a first shielding device. The housing includes a housing body and a cover plate. The cover plate includes a first surface and a second surface. The first surface faces the housing body and is combined with the housing body to form an internal space of the housing body. The second surface faces away from the first surface and is far from the housing body to be the exterior. A first sound hole is provided on the cover plate. The sound-emitting device includes a first speaker which includes a diaphragm. The diaphragm includes a first sound-emitting surface and a second sound-emitting surface. The first sound-emitting surface faces the first surface, and the second sound-emitting surface faces away from the first sound-emitting surface. The first shielding device is disposed around the first sound hole and includes a first part, a second part, a first surface, and a second surface. The first surface is close to the first sound hole, the second surface faces away from the first surface, the first part is between the first surface and the second surface, the first part is fixed to the cover plate, and the second part faces away from the first part and faces the exterior.

[0011] The sound-emitting device further includes a magnetic circuit system. The magnetic circuit system includes a magnet which has a third surface and a fourth surface. The third surface of the magnet faces the second sound-emitting surface of the diaphragm, and the fourth surface of the magnet faces away from the third surface of the magnet. The third surface of the magnet forms an angle less than or equal to 90 degrees with the first surface of the first shielding device.

[0012] The ratio of the width to the height of the first shielding device ranges from 1.33 to 1.78 or from 2.13 to 2.85.

[0013] The first shielding device includes a sound wave shielding plate.

[0014] Implementing the earphone device of the present invention has the following beneficial effects: By means of the acoustic lens, the propagation of the sound wave is delayed at the edge, so that the sound wave is closer to a plane wave when reaching the human ear. Brief Description of the Drawings

[0015] Figure 1 is a perspective view of a headphone device according to an embodiment of the present invention.

[0016] Figure 2 is Figure 1 the top view of the headphone device.

[0017] Figure 3 is a schematic view of the headphone device cut along Figure 2 III-III.

[0018] Figure 4 is a schematic view of the headphone device cut along Figure 2 IV-IV.

[0019] Figure 5 is a schematic view of the headphone device cut along Figure 2 V-V. Detailed Description of the Embodiments

[0020] Please refer to Figure 1 , Figure 1 which is a perspective view of a headphone device according to an embodiment of the present invention. The headphone device 2 includes earcups (not shown), a housing 20, a sound generating device, and a plurality of shielding devices 22, 23, 25, 26. The earcups are connected to the housing 20 and are typically made of a soft material (such as sponge) and can be attached to the user's ears. In this embodiment, the sound generating device includes a tweeter 21, a woofer 24 (shown in Figure 4 , 5 ) and a cross-feed speaker (not shown), and these shielding devices 22, 23, 25, 26 are acoustic lenses and include sound wave baffle plates. When using the headphone device, the sound waves generated by the tweeter 21 will sequentially pass through the shielding device 23 and the shielding device 22 and reach the user's ear canal. On the other hand, the sound waves generated by the woofer 24 will pass through the shielding device 25 and the shielding device 26 and reach the user's ear canal. The configuration and functions of each component are described in detail below:

[0021] Please refer to Figure 1 , 2 , 3, Figure 2 which is Figure 1 the top view of the headphone device, Figure 3 is a cut along Figure 2Schematic diagram of the earphone device in the III-III cross-section. As shown in the figure, the housing 20 includes a housing body 204 and a cover plate 203. The cross-section of the housing body 204 is generally U-shaped and has a bottom 2045 and a peripheral part 2046. One side of the peripheral part 2046 is connected to the bottom 2045 to form a closed side, and the other side opposite to the closed side is an open side. The cover plate 203 is arranged on the open side and has a first surface 2034 and a second surface 2033. The first surface 2034 faces the housing body 204 and engages with the housing body 204 to form an internal space 2048 of the housing 20. The second surface 2033 of the cover plate 203 faces away from the first surface 2034 and is away from the housing body 204 to be the outside 2049. Mounting holes 2047 are provided on the peripheral part 2046 of the housing body 204. The earphone device 2 of the present invention further includes a bracket (not shown). The bracket extends along the peripheral part 2046 of the housing body 204 outside the housing 20, and the end of the bracket is connected to the mounting hole 2047.

[0022] Please refer to Figure 2 , the projected area 2032 of the bass speaker 24 on the cover plate 203 has a first center point C2, and the projected area 2031 of the cross-feed speaker (not shown) on the cover plate 203 has a second center point C1. In this embodiment, the perpendicular bisecting plane P of the connection line L between the first center point C2 and the second center point C1 will pass through the tweeter 21, and the setting position of the tweeter 21 is close to the mounting hole 2047.

[0023] The tweeter 21 is arranged in the internal space 2048 and includes a diaphragm 211 and a magnetic circuit system 213. The diaphragm 211 includes a first sounding surface 2111 and a second sounding surface 2113. The first sounding surface 2111 faces the outside 2049 of the housing body 204, and the second sounding surface 2113 faces away from the first sounding surface 2111 and faces the internal space 2048. The magnetic circuit system 213 is arranged on the side of the second sounding surface 2113 and includes a magnet. The magnet has a third surface 2133 and a fourth surface 2131. The third surface 2133 of the magnet faces the second sounding surface 2113 of the diaphragm 211, and the fourth surface 2131 of the magnet faces away from the third surface 2133 of the magnet.

[0024] The shielding device 23 includes a third surface 231, a fourth surface 232, a third part 234 and a fourth part 233. The third surface 231 is close to the first sounding surface 2111 of the diaphragm 211, the fourth surface 232 is arranged facing away from the third surface 231, the third part 234 is between the third surface 231 and the fourth surface 232 and is fixed to the cover plate 203, and the fourth part 233 is between the third surface 231 and the fourth surface 232 and is arranged relative to the third part 234 and is away from the cover plate 203.

[0025] The shielding device 22 includes a first surface 221, a second surface 222, a first part 224, and a second part 223. The first surface 221 is close to the fourth surface 232 of the shielding device 23. The second surface 222 is disposed opposite to the first surface 221. The first part 224 is between the first surface 221 and the second surface 222 and is fixed to the cover plate 203. The second part 223 is between the first surface 221 and the second surface 222 and is disposed relative to the first part 224 and away from the cover plate 203.

[0026] The cover plate 203 further includes two parallel support members 27 ( Figure 1 , 3 ) and a receiving space 2035 ( Figure 3 ). Each support member 27 includes an end 271, and the end 271 is connected to the second surface 2033 of the cover plate 203 (the connection position is near the shielding device 22). The support member 27 is strip-shaped and straddles above the diaphragm 211 of the tweeter 21. In addition, although two support members 27 are shown in Figure 1 to support the shielding device 23 at the same time, it can be understood that the present invention is not limited thereto. If it is modified to only provide a support member to support the shielding device 23, it also belongs to the scope of the present invention. The receiving space 2035 includes an inclined surface 2036, and the tweeter 21 is embedded in the receiving space 2035 and contacts the inclined surface 2036.

[0027] In this embodiment, the shielding device 22 is disposed on the side of the fourth surface 232 of the shielding device 23 and is fixed on the groove 2037 of the cover plate 203. The shielding device 23 is disposed between the shielding device 22 and the diaphragm 211 of the tweeter 21. The first sounding surface 2111 of the diaphragm 211 of the tweeter 21 faces both the shielding device 22 and the shielding device 23 at the same time. It should be noted that the first sounding surface 2111 is closer to the shielding device 23 and farther from the shielding device 22.

[0028] Please refer to Figure 2 and Figure 3 at the same time. The width of the shielding device 22 is W1, the height is H1, the width of the shielding device 23 is W2, and the height is H2. The following shows the dimensions, ratios, and upper and lower limits of the shielding devices 22 and 23:

[0029] Table 1

[0030] Occlusion device 22 Width W1 Height H1 Width / Height (W1 / H1) Dimensions (mm) and their ratios of this embodiment 20 7 2.86 Dimensions (mm) and their ratios of this embodiment 24 8.4 3.43 Dimensions (mm) and their ratios of this embodiment 18 6.3 2.57

[0031] Table 2

[0032] Occlusion device 23 Width W2 Height H2 Width / Height (W2 / H2) Dimensions (mm) and their ratios of this embodiment 11 3.8 2.89 Dimensions (mm) and their ratios of this embodiment 13.2 4.56 3.47 Dimensions (mm) and their ratios of this embodiment 9.9 3.42 2.61

[0033] As can be seen from Table 1 and Table 2 above, the range of the ratio W1 / H1 of the width to the height of the shielding device 22 is 2.57 to 3.43, and the range of the ratio W2 / H2 of the width to the height of the shielding device 23 is 2.61 to 3.47.

[0034] Please refer to Figure 3 , in this embodiment, the included angle θ1 between the third surface 2133 of the magnet of the tweeter 21 and the first surface 221 of the shielding device 22 is less than 90 degrees.

[0035] The tweeter in the earphone is located near the ear, so it will reach the ear in a spherical wave. At this time, the frequency balance of the ear will change due to the change of the ear position. The high-frequency range is stronger in the central part of the tweeter, and the low-frequency range is stronger in the edge part of the tweeter. Therefore, when the sound wave in the area of the edge part of the tweeter reaches the ear earlier, the balance between the low frequency and the high frequency will change, and the sound quality will also change. Therefore, in the present invention, the shielding device 23 and the shielding device 22 are arranged in front of the tweeter 21. The sound wave is reflected and / or diffracted by the shielding of the shielding device 23 and the shielding device 22, and the propagation delay will occur in the central part, and when it reaches the ear canal, it is already close to a plane wave, and the phase is adjusted. In particular, the ear positions of different people are slightly different. Because the present invention can make the sound wave reaching the ear canal closer to a plane wave, the consistency of the change of the frequency characteristics of the sound wave reaching the ear canal can be ensured, and then a stable front positioning effect can be generated, providing excellent sound quality.

[0036] Please refer to again Figure 1 , a plurality of sound holes are provided on the cover plate 203 of the housing 20, such as the first sound hole 201 and the second sound hole 202. The shielding device 25 is arranged around the first sound hole 201, and the shielding device 26 is arranged around the second sound hole 202. When the earphone device is in use, the bass unit 24 (shown in Figure 4 , 5 ) arranged in the housing 20 will generate sound waves. The sound waves pass through the first sound hole 201 and the second sound hole 202 and then pass out of the housing 20, and then are reflected and / or diffracted and the phase is adjusted by the shielding of the shielding device 25 and the shielding device 26 respectively, so that when it reaches the user's ear canal, it is close to a plane wave.

[0037] Please refer to Figure 4 , Figure 4 is along Figure 2IV-IV is a schematic diagram of a cross-section earphone device. As shown in the figure, the bass speaker 24 includes a vibration plate 241 and a magnetic return system 243, wherein the vibration plate 241 includes a first sound-emitting surface 2411 and a second sound-emitting surface 2413, wherein the first sound-emitting surface 2411 faces the cover plate 203, and the second sound-emitting surface 2413 faces away from the first sound-emitting surface 2411. The magnetic return system 243 is arranged on the side of the second sound-emitting surface 2413, and includes a magnet, wherein the magnet has a third surface 2433 and a fourth surface 2431, wherein the third surface 2433 of the magnet faces the second sound-emitting surface 2413 of the vibration plate 241, and the fourth surface 2431 of the magnet faces away from the third surface 2433 of the magnet.

[0038] The shielding device 25 includes a first surface 251, a second surface 252, a first portion 254 and a second portion 253, wherein the first surface 251 is close to the first sound hole 201, the second surface 252 is disposed away from the first surface 251, the first portion 254 is between the first surface 251 and the second surface 252 and is fixed to the cover plate 203, and the second portion 253 is between the first surface 251 and the second surface 252 and is disposed relative to the first portion 254 and away from the cover plate 203. In this embodiment, the angle θ2 between the third surface 2433 of the magnet and the first surface 251 of the shielding device 25 is less than or equal to 90 degrees.

[0039] Please also see Figure 2 as well as Figure 4 , the width of the shielding device 25 is W3, the height is H3, and the size, proportion, and upper and lower limits of the shielding device 25 are shown below:

[0040] Table 3

[0041] Occlusion device 25 Width W3 Height H3 Width / Height (W3 / H3) Dimensions (mm) and their ratios of this embodiment 7.4 5 1.48 Dimensions (mm) and their ratios of this embodiment 8.88 6 1.78 Dimensions (mm) and their ratios of this embodiment 6.66 4.5 1.33

[0042] It can be seen from Table 3 above that the ratio W3 / H3 of the width to the height of the shielding device 25 is in the range of 1.33 to 1.78.

[0043] See also Figure 5 , Figure 5 is along Figure 2 VV cutaway diagram of the earphone device. As shown in the figure, the shielding device 26 includes a first surface 261, a second surface 262, a first portion 264 and a second portion 263, wherein the first surface 261 is close to the second sound hole 202, the second surface 262 is disposed away from the first surface 261, the first portion 264 is between the first surface 261 and the second surface 262 and is fixed to the cover plate 203, and the second portion 263 is between the first surface 261 and the second surface 262 and is disposed relative to the first portion 264 and away from the cover plate 203. In this embodiment, the angle θ3 between the third surface 2433 of the magnet and the first surface 261 of the shielding device 26 is less than or equal to 90 degrees.

[0044] Please also seeFigure 2 and Figure 5 The width of the shielding device 26 is W4 and the height is H4. The following shows the size, ratio and upper and lower limits of the shielding device 26:

[0045] Table 4

[0046] Occlusion device 26 Width W4 Height H4 Width / Height (W4 / H4) Dimensions (mm) and their ratios of this embodiment 8.3 3.5 2.37 Dimensions (mm) and their ratios of this embodiment 9.96 4.2 2.85 Dimensions (mm) and their ratios of this embodiment 7.47 3.15 2.13

[0047] As can be seen from Table 4 above, the range of the ratio W4 / H4 of the width to the height of the shielding device 26 is 2.13 to 2.85.

[0048] Since there is a distance difference between the first sound hole 201 and the second sound hole 202 with respect to the ear canal, the balance of the frequency changes when the sound wave reaches the ear canal after passing through the first sound hole 201 (closer to the ear canal) and the second sound hole 202 (farther from the ear canal). Therefore, the present invention provides the shielding device 25 and the shielding device 26 in front of the first sound hole 201 and the second sound hole 202 for phase adjustment to suppress the phase difference of the sound wave generated by the bass speaker 24.

[0049] Although the present invention has been disclosed as above in the embodiments, it is not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined by the claims.

Claims

1. An earphone device, characterized in that, Comprising: A housing, including a housing body and a cover plate. The cover plate includes a first surface and a second surface. The first surface faces the housing body and is combined with the housing body to form an internal space of the housing body. The second surface faces away from the first surface and is far from the housing body to be the outside. A sound generating device, including a first speaker. The first speaker includes a diaphragm. The diaphragm includes a first sounding surface and a second sounding surface. The first sounding surface faces the outside. The second sounding surface faces away from the first sounding surface. A first shielding device, including a first part, a second part, a first surface and a second surface. The first surface faces the first sounding surface. The second surface faces away from the first surface. The first part is between the first surface and the second surface. The first part is fixed on the cover plate. The second part faces away from the first part and is far from the cover plate. And A second shielding device, disposed between the first shielding device and the diaphragm of the first speaker. The first sounding surface of the diaphragm of the first speaker faces the first shielding device and the second shielding device at the same time, and the first sounding surface is closer to the second shielding device and farther from the first shielding device. The sound waves emitted by the first speaker are reflected and / or diffracted by the shielding of the first shielding device and the second shielding device, and a propagation delay will occur in the central part thereof.

2. The earphone device according to claim 1, characterized in that, The sound generating device further includes a second speaker and a third speaker. The projected area of the second speaker on the cover plate has a first center point. The projected area of the third speaker on the cover plate has a second center point. The perpendicular bisecting plane of the connection line between the first center point and the second center point passes through the first speaker.

3. The earphone device according to claim 1, characterized in that, The cover plate further includes a support member. The support member includes an end portion. The end portion is connected to the second surface of the cover plate. The second shielding device includes a third part and a fourth part. The third part is fixed to the end portion of the support member. The fourth part is disposed facing away from the third part and is far from the end portion.

4. The earphone device according to claim 3, characterized in that, The ratio of the width to the height of the first shielding device ranges from 2.57 to 3.

43. The ratio of the width to the height of the second shielding device ranges from 2.61 to 3.

47.

5. The earphone device according to claim 1, characterized in that, The sound generating device further includes a magnetic circuit system. The magnetic circuit system includes a magnet. The magnet has a third surface and a fourth surface. The third surface of the magnet faces the second sounding surface of the diaphragm. The fourth surface of the magnet faces away from the third surface of the magnet. The third surface of the magnet forms an angle less than 90 degrees with the first surface of the first shielding device.

6. An earphone device, characterized in that, Comprising: A housing, including a housing body and a cover plate. The cover plate includes a first surface and a second surface. The first surface faces the housing body and is combined with the housing body to form an internal space of the housing body. The second surface faces away from the first surface and is far from the housing body to be the outside. A first sound hole is provided on the cover plate. A sound generating device, including a first speaker. The first speaker includes a diaphragm. The diaphragm includes a first sounding surface and a second sounding surface. The first sounding surface faces the first surface. The second sounding surface faces away from the first sounding surface. The first shielding device is disposed around the first sound hole and includes a first part, a second part, a first surface and a second surface. The first surface is close to the first sound hole, the second surface faces away from the first surface, the first part is between the first surface and the second surface, the first part is fixed to the cover plate, and the second part faces away from the first part and is away from the cover plate. And A second shielding device is disposed between the first shielding device and the diaphragm of the first speaker. The first sound-emitting surface of the diaphragm of the first speaker faces both the first shielding device and the second shielding device at the same time, and the first sound-emitting surface is closer to the second shielding device and farther from the first shielding device. The sound waves emitted by the first speaker are reflected and / or diffracted due to the shielding of the first shielding device and the second shielding device, and a propagation delay will occur in the central part thereof.

7. The earphone device according to claim 6, characterized in that, The sound-emitting device further includes a magnetic circuit system, and the magnetic circuit system includes a magnet. The magnet has a third surface and a fourth surface. The third surface of the magnet faces the second sound-emitting surface of the diaphragm, the fourth surface of the magnet faces away from the third surface of the magnet, and the third surface of the magnet forms an angle less than or equal to 90 degrees with the first surface of the first shielding device.

8. The earphone device according to claim 6, characterized in that, The ratio of the width to the height of the first shielding device ranges from 1.33 to 1.78 or from 2.13 to 2.

85.

9. The earphone device according to claim 1 or 6, characterized in that, The first shielding device includes a sound wave baffle.

Images