JP2024049270A - Drinking glass - Google Patents

Abstract

To provide a performance glass for beverages amplifying sounds in a glass and highly efficiently diffusing the amplified sounds from an upper opening of a glass body.SOLUTION: A performance glass for beverages includes a glass body, the bottomed cylindrical body curved in a horizontal direction and having an upper opening, a flat plate-like diaphragm, and a fixing mechanism for fixing a speaker to the glass body. The diaphragm is located on a lateral face of the glass body, where at least one part of the diaphragm is connected to the lateral face or the bottom of the glass body. The fixing mechanism fixes the speaker to a vicinity of the diaphragm, with the speaker facing a direction of the diaphragm. A sound emitted from the speaker vibrates the diaphragm, the vibration of the diaphragm propagates to the glass body, the vibration propagates to a space in the glass body and the vibration resonates in the space.SELECTED DRAWING: Figure 1

Description

The present invention relates to a beverage presentation glass.

Glasses with various functions other than just for holding beverages have been developed.
For example, Patent Documents 1 to 3 disclose a beverage presentation glass invented by the present inventor. This beverage presentation glass includes a glass body, a storage section extending from the bottom of the glass body to the inside for storing a mobile phone or smartphone, and a waveguide section extending from the side of the glass body to the inside for passing mobile phone radio waves. This beverage presentation glass can transmit mobile phone radio waves to the outside through the waveguide section for wireless communication even when the glass body is filled with a beverage.
Patent Document 4 discloses a beverage presentation glass invented by the present inventor. This beverage presentation glass is equipped with an image display device fixed to the side of the glass and a reflecting mirror disposed inside the glass body, and is capable of projecting an image from the image display device into the glass in a simulated manner.

Patent No. 6337256 Patent No. 6406742 Patent No. 6432960 Patent No. 6488049

However, the beverage presentation glasses of Patent Documents 1 to 4 mentioned above are unable to amplify sounds within the glass.

In consideration of the above problems, the present invention has an objective of providing a beverage presentation glass that amplifies sounds within the glass and efficiently diffuses the amplified sounds from the upper opening of the glass body.

The beverage presentation glass of the present invention comprises a glass body which is a cylindrical body with a bottom and an upper opening curved in the horizontal direction, a flat, plate-shaped diaphragm, and a fixing mechanism for fixing a speaker to the side of the glass body, the diaphragm being located on the side of the glass body, the diaphragm being connected to or in close contact with the side of the glass body, the diaphragm being connected to the side of the glass body at at least one point, the fixing mechanism fixing the speaker near the diaphragm with the speaker facing in the direction of the diaphragm, the diaphragm being connected to or in close contact with the side of the glass body with its surface facing in the direction of the speaker, the vertical length of the diaphragm being longer than half the vertical length of the glass body and the vertical length of the diaphragm being shorter than the vertical length of the glass body, the sound coming from the speaker vibrates the diaphragm, and the vibration of the diaphragm is propagated to the inner wall surface of the glass body.
The present invention is also characterized in that the sound from the speaker resonates in a space surrounded by the inner wall surface of the glass body and the beverage inside the glass body.
The glass body is also characterized in that the diameter of the upper opening of the glass body is larger than the diameter of the bottom surface of the inner wall of the glass body.
The diaphragm and the glass body are made of materials having the same acoustic impedance.
The distance between the speaker and the diaphragm is 18 mm or less.
The distance between the speaker and the diaphragm is variable.
The thickness of the upper end area of the diaphragm is also thinner than the thickness of the lower end area of the diaphragm.
The speaker can be fixed near the diaphragm with the distance between the speaker and the diaphragm being 18 mm or less, and the speaker can be fixed near the diaphragm with the speaker and the diaphragm not in contact with each other.
The glass body further includes a hollow chamber for resonating the sound of the speaker, the chamber has an air-filled space therein, the distance between the side of the chamber and the surface of the diaphragm is 18 mm or less, the volume of the chamber is at least 1/3 of the volume of the glass body, and the sound of the speaker resonates in the air-filled space inside the chamber.
The chamber has a transparent upper end surface at its upper portion, all of the side surfaces of the chamber are transparent, the vibration plate is transparent, all of the side surfaces of the glass body are transparent, and the distance between the inner wall surface of the glass body and the side surface of the chamber is 1 cm or less.

The beverage presentation glass of the present invention directly receives sound from a speaker fixed near the glass using a diaphragm on the side of the glass, and transmits the vibrations (sound) of the diaphragm to the body of the glass (via the connecting part), where the vibrations are amplified by resonating in the space within the glass body.
The beverage presentation glass of the present invention receives sound directly from a flat diaphragm placed near the speaker, so it can efficiently transmit sound (vibration) to the glass body and can be used with speakers of various diameters. It also uses no electricity, making it energy-efficient.
The beverage presentation glass of the present invention uses a method of resonating and amplifying sound (vibrations) in the space between the glass body (more precisely, the inner wall surface of the glass) and the beverage (the water level n) (or the space surrounded by the inner wall surface of the glass body and the beverage (the water level) or the space within the glass body above the water level), so the resonant frequency within the glass body can be changed by adjusting the height of the beverage (liquid) level within the glass body. In other words, the sound of the speaker resonating within the glass body can be changed by adjusting the amount of beverage (i.e., it is possible to create an effect in which the tone color is returned by increasing or decreasing the amount of beverage in the glass).
In the beverage presentation glass of the present invention, the vibration plate and the glass body are connected at least in one place, and furthermore, the acoustic impedance of the vibration plate and the glass body are the same (matched), so sound (vibration) can be transmitted into the glass with almost no energy loss.

1A and 1B are a perspective view and a cross-sectional view showing a beverage presentation glass according to a first embodiment of the present invention; Explanation of the formula and the symbols used in the formula 1A and 1B are cross-sectional views showing an example of the relationship between the size of the glass body and the size of the vibration plate; FIG. 2 is a cross-sectional view showing a beverage presentation glass according to a second embodiment. A schematic diagram showing how sound waves are dispersed from a speaker or sound source. FIG. 11 is a cross-sectional view showing a beverage presentation glass according to a third embodiment. FIG. 13 is a perspective view showing a transmitted light path of the beverage presentation glass of the third embodiment.

[First embodiment of beverage presentation glass]
A first embodiment of the beverage presentation glass of the present invention will be described below with reference to the drawings.
As shown in Figure 1, the beverage presentation glass 1 is roughly composed of a glass body 10 which is a bottomed cylindrical body having a horizontally curved upper opening 11, a flat, plate-like vibration plate 20, and a fixing mechanism 15 which fixes a speaker 100 to the side of the glass body 10.
The glass body 10 is a bottomed cylindrical body having a horizontally curved upper opening 11 as shown in FIG. 1(a) or FIG. 1(b), and the beverage L can be filled inside. The glass body 10 functions as a resonance tube for resonating the sound (vibration) of the speaker 100 received by the vibration plate 20. By adjusting the water level h of the beverage L placed inside the glass body 10 as shown in FIG. 1(b), the resonance frequency of the sound inside the glass body 10 can be changed. There is one thing to note here, and that is the material of the glass body 10 (strictly speaking, the inner wall surface of the glass body 10). Since the beverage presentation glass 1 of the present invention needs to resonate the sound (vibration) of the vibration plate 20 in the space 30 between the inner wall surface 13 of the glass and the beverage L (or the space surrounded by the beverage L and the inner wall surface 13 of the glass) in order to amplify the sound of the speaker 100, it is better to use a material for the glass body 10 (strictly speaking, the material constituting the inner wall surface of the glass body 10) whose acoustic impedance is equal to or greater than that of water. This is because if a material with a lower acoustic impedance value than that of water (such as low-density wood or polystyrene foam) is used as the material for glass body 10 (more precisely, glass inner wall surface 13), the sound (air vibration) reflected by the water surface of beverage L will be absorbed or transmitted without being re-reflected by glass inner wall surface 13, making it difficult for resonance to occur in space 30, and as a result, the strength of the resonance or sympathetic vibration (or the Q value of the resonance) of the sound within glass body 10 will be weakened (for information on acoustic impedance, Q value, and sound resonance, please refer to a specialized book on acoustic engineering). Materials with a higher density than water (such as materials that reflect sound well, such as metal) are suitable as materials for glass body 10.
The diaphragm 20 is a flat diaphragm for efficiently receiving (taking in) the sound (vibration) of the speaker 100 fixed near the diaphragm 20. The sound (vibration) output from the speaker 100 vibrates (or excites) the diaphragm 20 located on the side of the glass body 10, and the vibration is transmitted to the glass body 10 (more precisely, the inner wall surface 13 of the glass body 10) (as a result, the beverage L also vibrates), causing resonance in the space 30 inside the glass (causing the air in the space 30 to resonate and vibrate). In other words, the sound (vibration) of the speaker 100 resonates in the space 30 between the inner wall surface 13 of the glass body 10 and the beverage L (more precisely, the space between the inner wall surface 13 of the glass body 10 and the water surface of the beverage L). Since the speaker 100 is disposed near the diaphragm 20 by the fixing mechanism 15 as shown in FIG. 1(a) or FIG. 1(b), the diaphragm 20 can also catch minute vibrations generated by the speaker 100. In addition, since no electricity is used to drive the diaphragm 20, it is energy-saving (the diaphragm 20 vibrates or drives purely by the energy of the sound pressure of the speaker 100). In addition, since the diaphragm 20 needs to transmit the sound (vibration) excited (driven) by the speaker 100 into the inside of the glass body 10, the diaphragm 20 and the side of the glass body 10 must be connected (joined) at least at one point. The vibration of the diaphragm 20 is transmitted to the glass body 10 through the connection point 16. Considering the sound transmission efficiency, the connection point 16 is preferably the side of the glass body 10 so that the diaphragm 20 and the glass body 10 can be directly connected in the shortest distance. In other words, it is better for the diaphragm 20 (strictly speaking, the surface of the diaphragm 20) to be connected (in close contact) to the side of the glass body 10 (and the larger the area of the connection point 16 or the close contact point, the higher the transmission efficiency). In addition, there is one caution for the arrangement of the diaphragm 20, which is that it is better to avoid placing the diaphragm 20 on the bottom surface or near the bottom of the glass body 10. This is because if the vibration plate 20 were provided on the bottom surface or bottom part of the glass body 10, the distance between the vibration plate 20 and the resonance space 30 (i.e., the distance to the water surface of the beverage L) would be longer, and the sound or sound waves would be attenuated accordingly (compared to when the vibration plate 20 is attached to the side surface of the glass body 10) and transmitted to the space 30. In order to avoid sound energy loss, it is preferable to connect or attach the surface of the vibration plate 20 to the side surface of the glass body (if possible, at a height position near the center of the side surface).
In order to prevent the sound output from the speaker 100 from being unnecessarily diffused or scattered on the surface of the diaphragm 20, it is desirable for the diaphragm 20 to have a flat plate shape without any protrusions. A material with high acoustic impedance and light weight (i.e., easy to vibrate) is suitable for the diaphragm 20. The diaphragm 20 is connected to the side of the glass body in contact with (or facing) the side of the glass body as shown in Figures 1(a) and 1(b). In addition, in order for the diaphragm 20 to receive sound waves from the speaker 100, the diaphragm 20 is connected to or in close contact with the side of the glass body 10 with its surface facing the speaker 100 (i.e., the diaphragm 20 and the speaker 100 face each other).
The fixing mechanism 15 is a member for fixing the speaker 100 near the diaphragm 20 (i.e., near the side of the glass) while facing the diaphragm 20 (i.e., the diaphragm 20 and the speaker 100 are fixed facing each other). Examples of the fixing mechanism 15 include a locking mechanism, a screw mechanism, a magnet mechanism, a pocket mechanism, and a multi-axis arm mechanism as shown in FIG. 1(a) or FIG. 1(b). If a multi-axis arm is used as the fixing mechanism 15 as shown in FIG. 1(a) or FIG. 1(b), it becomes possible to adjust the distance d between the diaphragm 20 and the speaker 100. If the distance d is increased, it becomes difficult for the sound (vibration) of the speaker 100 to reach the diaphragm 20, so the magnitude of the resonance of the sound (vibration) in the glass body 10 can be reduced. In other words, the volume of the sound resonating (resonating) in the glass body 10 can be adjusted by increasing or decreasing the distance d. The smaller the distance d, the less the transmission loss of sound energy between the speaker 100 and the diaphragm 20 (in principle, when the distance d=0, that is, when the speaker 100 and the diaphragm 20 are in close contact with each other, the transmission loss of sound waves is minimized).
The beverage presentation glass 1 of the present invention uses a system in which sound (vibrations) from the speaker 100 is transmitted to the glass body 10 and amplified by resonating or sympathizing in the space 30 inside the glass body 10 (strictly speaking, the space surrounded by the beverage L and the inner wall surface of the glass body or the space between the inner wall surface 13 of the glass above the water level of the beverage L), so the sound that resonates inside the glass body 10 can be changed by increasing or decreasing the amount of beverage L (more strictly speaking, by increasing or decreasing the height h of the water level of the beverage L) as shown in Figure 1 (b). In other words, the beverage presentation glass 1 of the present invention is a beverage presentation glass whose tone changes depending on the amount of alcohol (beverage) inside the glass.

A supplementary explanation will be given regarding the distance d between the diaphragm 20 and the speaker 100.
The frequency range of sounds that the human ear can hear is said to be between 20 Hz and 20,000 Hz (this is called the audible range). Since the speed of sound in air is about 340 m/s to 360 m/s, the wavelength of a sound of 20,000 Hz (i.e. the highest frequency in the audible range) traveling through air is about 17 mm to 18 mm (for more information, please refer to a specialized book on acoustic engineering).
According to the basic laws of physics (strictly speaking, the principle of least action) or the basic properties of sound waves, sound waves emitted from a sound wave source diffuse in a material or space while diffracting, etc., with a priority given to parts where energy is easily transmitted. Therefore, the greater the distance d between the sound wave source (i.e., the speaker 100) and the diaphragm 20 compared to the wavelength of the sound wave, the easier it is for the sound wave (of that wavelength) to diffract to the back side of the speaker 100 or to diffuse (radially) into the space around the speaker 100, making it more difficult for the sound wave to reach the diaphragm 20 (for information on attenuation and diffraction due to diffusion and radiation of sound, please refer to specialized books on acoustic engineering or speakers). For example, if the distance d is five times the wavelength of the sound wave (i.e., 5λ length [m]) as shown in Figure 5, the sound will diffuse and weaken in the vertical direction as a sound wave, as shown in Figure 5, and furthermore, most of the sound waves output from the speaker 100 will wrap around (diffract) to the back side of the speaker 100, and only a small portion will reach the diaphragm 20.
In order to prevent energy loss due to diffraction and diffusion caused by the wave properties of sound, it is desirable for the distance d to be at least 18 mm or less. In other words, it is desirable for the distance d to be one wavelength (18 mm) or less of the highest frequency (20,000 Hz) in the range of human hearing (by making the distance d one wavelength or less, the sound waves of the speaker 100 can be transmitted to the diaphragm 20 in a state where they are hardly diffused as waves).
By setting the distance d to 18 mm or less, it is possible to efficiently send sound waves in the highest frequency portion of the audible range (20,000 Hz) to the diaphragm 20 without them being diffused (wastefully into the surrounding space) (in other words, by setting the distance d to 18 mm or less, it is possible to increase the volume or sound energy in the band near 20,000 Hz output from the upper opening 11 of the beverage presentation glass 1).
In addition, the wavelength of the sound waves in the low frequency part of the audible range (i.e., 20 [Hz]) is about 18 [m], which is a very large value (compared to the wavelength of the high frequency part of the audible range, 18 [mm]). Therefore, as long as the distance d satisfies the condition of being less than one wavelength (18 [mm]) of the highest frequency in the audible range (20,000 [Hz]), the distance d will automatically satisfy the condition of being less than one wavelength (18 [m]) of the lowest frequency in the audible range (20 [Hz]). In other words, as long as the distance d is 18 [mm] or less, the energy loss due to diffraction and diffusion can be reduced over the entire frequency range of the audible range (20 [Hz] to 20,000 [Hz]) (this is due to the basic principle of sound waves that the lower the frequency, the longer the wavelength).
Furthermore, as long as the distance d is 18 mm or less, sound waves can be sent efficiently (with little energy loss) to the diaphragm 20 across the entire frequency range of the audible range, so that the frequency characteristics of the sound (sound waves) output (or radiated) from the upper opening 11 of the beverage presentation glass 1 can be made flat (across the entire frequency range of the audible range) (i.e., the sound quality of the beverage presentation glass 1 is improved).
By making the distance d equal to or less than one wavelength, the sound waves of the speaker 100 can be transmitted to the diaphragm 20 in a state where they are hardly diffused as waves.

A supplementary explanation will be given regarding the distance d between the diaphragm 20 and the speaker 100.
If the speaker 100 is fixed to the side of the glass body 10 when the distance d=0, that is, when the diaphragm 20 and the speaker 100 are in complete contact (or in close contact), the speaker 100 vibrates minutely during sound wave emission, and mechanically, there is a risk of repeated minute contact or collision occurring at the contact point between the speaker 100 and the diaphragm 20, which may damage the diaphragm 20 (that is, when the distance d=0, chattering occurs constantly between the speaker 100 and the diaphragm 20 due to vibration during sound wave emission). The collision sound caused by repeated mechanical contact between the speaker 100 and the diaphragm 20 also becomes sound noise, which can cause deterioration of sound quality. To prevent this, it is recommended to fix the speaker 100 near the diaphragm 20 with the diaphragm 20 and the speaker 100 slightly separated (that is, when they are not in contact). Specific methods for fixing the speaker 100 when the distance d>0 include sandwiching a spacer between the diaphragm 20 and the speaker 100, or using a multi-axis arm that can fix an object (speaker 100) at a fixed position in the air.
By making the distance d 0 mm < distance d < 18 mm, it is possible to prevent contact (collision) noise between the diaphragm 20 and the speaker 100 while transmitting the sound waves of the speaker 100 to the diaphragm 20 with almost no diffusion as waves.

A supplementary explanation will be given regarding the glass body 10 and the diaphragm 20.
As shown in Fig. 1(b), the beverage presentation glass 1 of the present invention transmits the sound (vibration) of the speaker 100 collected by the diaphragm 20 to the glass body 10, and resonates or resonates in the space 30 inside the glass body 10. Therefore, in order to reduce the transmission loss of the sound (vibration) energy at the connection part between the diaphragm 20 and the glass body 10 (more precisely, the reflection loss at the connection part 16), it is preferable to match the acoustic impedance of the diaphragm 20 and the glass body 10 (impedance matching or matching). Therefore, it is preferable that the diaphragm 20 and the glass body 10 are made of materials with the same acoustic impedance (for details on acoustic impedance, please refer to Fig. 2 or a specialized book on acoustic engineering or speakers).
It is desirable to match the acoustic impedance of the material of the glass body 10 at least in the area near the connecting portion 16 with the acoustic impedance of the material constituting the diaphragm 20. By matching the acoustic impedance of the materials of both the diaphragm 20 and the glass body 10 in the connecting portion 16 area, it is possible to suppress the reflection loss of sound waves at the connecting portion 16.

1B, the diameter R1 (or the diameter R1) of the upper opening 11 of the glass body 10 may be made larger than the diameter R2 (or the diameter R2) of the bottom surface 12 (of the inner wall surface) of the glass body 10 (i.e., the glass inner wall surface 13 may be inclined with respect to the glass bottom surface 12). By doing so, the shape of the inside of the glass body 10 becomes the same shape as the horn (or the horn part) of a horn speaker, so that the sound resonating in the space inside the glass body 10 can be diffused over a wide area from the upper opening 11 (for details on horn speakers and horns, please refer to specialized books on acoustic engineering or speakers).
As described above, the beverage presentation glass 1 of the present invention has two functions: a resonance tube that resonates sound (vibrations) and a speaker horn that diffuses sound, in which the glass body 10, in which the beverage is filled, functions as both a resonance tube that resonates sound (vibrations) and a speaker horn that diffuses sound.The greatest feature of this glass is that it is possible to greatly change the sound diffused from the upper opening 11 depending on the amount of beverage L inside the glass body 10 (strictly speaking, the height of the water surface of the beverage L in the glass).
Furthermore, by matching the acoustic impedance of the material of the diaphragm 20 and the glass body 10, it is possible to create a beverage presentation glass 1 with extremely reduced energy loss.
In addition, by setting the distance d between the diaphragm 20 and the speaker 100 to 18 mm or less, it is possible to create a beverage presentation glass 1 that has little energy loss due to diffusion and diffraction of the sound output from the speaker 100 across the entire frequency range of the audible range (20 Hz to 20,000 Hz).

The sizes of the glass body 10 and the diaphragm 20 will now be described in more detail.
According to the basic laws of physics (strictly speaking, the principle of least action), sound waves have the property of propagating through objects and spaces while diffusing (from the source of the sound waves). Therefore, in order for the diaphragm 20 to receive (take in) the sound waves (or air vibrations) output from the speaker 100 without leaking as much as possible (into the space around the glass body 10), it is better for the size of the diaphragm 20 to be as large as possible. Ideally, it is desirable for the size of the diaphragm 20 to be large enough to cover the front of the speaker 100 (the area from which sound is output).
On the other hand, if the size of the diaphragm 20 is too large compared to the glass body 100, most of the sound waves (sound energy) of the speaker 100 received by the diaphragm 20 will leak from the area near the outer periphery of the upper part of the diaphragm 20 and the area at the corners as shown in FIG. 3B, and will diffuse (into the surrounding space), resulting in extremely poor energy efficiency. For example, if the vertical length h2 of the diaphragm 20 is much larger than the vertical length h1 (or height) of the glass body as shown in FIG. 3B (i.e., h1<<h2), most of the sound waves (sound energy) of the speaker 100 will not propagate (from the diaphragm 20) to the glass body 10, but will leak and diffuse from the area near the outer periphery of the diaphragm 20 and the corners into the surrounding space. In other words, due to the basic laws of physics (strictly speaking, the principle of least action), the energy of a wave has the property of being preferentially transmitted to parts that are easily transmitted, so most of the sound energy is not transmitted to the glass body 10 and is released into the space from the area near the outer periphery of the upper end of the diaphragm 20 and the corners.
1(b) and 3(a), in the beverage presentation glass 1 of the present invention, the vertical length h2 of the diaphragm 20 is longer than half the vertical length h1 of the glass body 10, and the vertical length h2 of the diaphragm 20 is shorter than the vertical length h1 of the glass body 10 (i.e., h1/2<h2<h1). This makes it possible to efficiently transmit the sound waves of the speaker 100 to the glass body 10 (strictly speaking, the space inside the glass body 10), and is compatible with speakers 100 of various diameter sizes (strictly speaking, all speakers within half the size of h1).

The thickness of the diaphragm 20 will now be described in more detail.
If the thickness of the diaphragm 20 is made extremely thick, it becomes difficult for the diaphragm 20 to vibrate due to the sound waves of the speaker 100 (in other words, if the thickness of the diaphragm 20 is made too thick, its function as a diaphragm is reduced), so it is better to make the thickness of the diaphragm 20 at least 5 mm. When a strong material such as metal is used for the diaphragm 20, the thickness of the diaphragm 20 may be 1 mm or less. When using resin or the like, there is a problem of strength, so a thickness of 3 mm to 5 mm is desirable.

Below, a second embodiment of the beverage presentation glass of the present invention will be shown with reference to the drawings, but parts that have the same configuration as the beverage presentation glass 1 of the first embodiment described above will be given the same symbols and their descriptions will be omitted.
In this embodiment, as shown in FIG. 4, the thickness d1 of the upper end area of the vibration plate 20 is thinner than the thickness d2 of the lower end area of the vibration plate 20 (i.e., d1<d2). This is a measure to prevent the lower end of the (thin) vibration plate 20 from being damaged by the impact when the beverage performance glass 1 is placed on a table. When consuming alcohol, it is difficult for anyone to control the amount of force, and there are cases where the beverage performance glass 1 is placed on a table with great force, and the thin vibration plate 20 may be unintentionally broken by the impact, but this is a (reinforcement) measure to prevent this. In addition, by making d1<d2, it is possible to lower the center of gravity of the beverage performance glass 1, thereby increasing the stability of the beverage performance glass 1.

Below, a third embodiment of the beverage presentation glass of the present invention is shown with reference to the drawings, but the parts that have the same configuration as the beverage presentation glass 1 of the first embodiment described above will be given the same symbols and their descriptions will be omitted.
In this embodiment, as shown in FIG. 6, a hollow chamber 40 (air chamber) is provided inside the glass body 10 for resonating the sound of the speaker 100, and the chamber 40 has a space 45 filled with air therein (air-filled space for sound wave resonance), and the sound or sound waves of the speaker 100 resonate in the air-filled space 45 inside the chamber 40.
In order to efficiently propagate the sound (or sound waves) of the speaker 100 received by the diaphragm 20 to the space in the chamber 40, the distance d3 (more precisely, the shortest distance) between the surface of the diaphragm 20 and the side of the chamber 40 may be 18 mm or less, as shown in FIG. 6. 18 mm is the wavelength of a sound wave at the upper limit of the high frequency range of the human audible frequency band (frequency 20,000 Hz). By setting the distance d3 to 18 mm, the sound of the speaker 100 can be efficiently transmitted to the chamber 40 (strictly speaking, the space 45 for sound resonance in the chamber 40) over the entire range of the human audible frequency band, including the high frequency range of 20,000 Hz. In other words, by making d3 shorter than 18 mm, the sound can be transmitted from the diaphragm 20 or the speaker 100 to the chamber 40 with little loss of radiation diffusion of sound wave energy.
In this embodiment, by providing a chamber 40 inside the glass body 10, the amplification effect of the sound of the speaker 100 (or the sound transmitted to the diaphragm 20) due to resonance or resonance can be dramatically increased.
It should be noted that although water is a substance with a higher acoustic impedance than air, if the distance d3 is about 18 mm or less, even if the output of the speaker 100 is 100 W or less, the sound can be transmitted sufficiently through the beverage L and water to the chamber 40. It should also be noted that a voice uttered underwater can be transmitted at a volume sufficient for a human to hear if it is about 10 or 20 cm away, and the voice uttered by a human with high lung capacity can be heard sufficiently underwater if it is within a distance of 1 m.
In addition, the word "chamber" is a word that means an air room, etc., and although it can be pronounced as "chamber" in Japanese, the spelling of "chamber" will be used consistently in this specification.
The method and fixture 43 for fixing the chamber 40 inside the glass body 10 may be a magnet mechanism, a locking mechanism, a screw mechanism, or a fixing method and fixture using adhesion or welding.
The chamber 40 may be airtight or watertight to prevent the beverage L from entering the interior space 45 .

The volume of the chamber 40 is desirably at least 1/3 or more of the volume of the glass body 10 in order to ensure a sufficient volume of the space 45, which is a space for sound wave resonance. By making the volume of the chamber 40 1/3 or more of the volume of the glass body 10, it becomes possible to resonate or resonantly amplify the components of the sound (sound of the speaker 100 transmitted from the diaphragm 20) in a frequency band with a relatively long wavelength within the audible frequency band in the chamber 40 (space 45).
According to the basic principle of sound waves and resonance, the larger the volume of the chamber 40 (more precisely, the volume of the space 45) is, the longer the wavelength of the sound waves that resonate or resonate and amplify in the chamber 40 (strictly, the space 45) (i.e., the lower the frequency). Therefore, if the frequency of the sound waves to be resonated is low, the volume and length of the chamber 40 may be adjusted to match the target frequency. For example, if it is desired to lower the target frequency of the sound to be resonated (resonated and amplified) in the chamber 40 (space 45), the volume of the chamber 40 may be set to a size equal to or larger than half the volume of the glass body 10. However, care must be taken because increasing the volume of the chamber 40 reduces the area of the glass body 10 in which the beverage L can be placed.
The chamber 40 may be provided with a water inlet or outlet for the beverage L or water so that the beverage L can be poured up to any desired height within the space 45. This makes it possible to adjust the frequency of the sound that resonates (resonantly amplified) in the chamber 40 (space 45) according to the water level of the beverage L filled in the chamber 40. It is preferable that the water inlet and outlet can be tightly sealed to increase the airtightness and watertightness of the space 45.

As shown in Figures 6 and 7, by making the side 41 of the chamber 40, the side of the glass body 10, and the diaphragm 20 transparent, it is possible to make it possible for the user U to see the area on the opposite side of the glass body 10 and the speaker 100 through the side of the chamber 40 and the side of the glass body 10 (through the side of the chamber 40 and the side of the glass body 10).
6 and 7, the chamber 40 has a transparent top surface 42 at its upper part, and the side surfaces 41 of the chamber 40 are all made transparent, the diaphragm 20 is made transparent, and the side surfaces of the glass body 10 are all made transparent, so that the user U can view the side surfaces of the glass body 10 and the diaphragm 20 from the direction of the upper opening 11 of the glass body 10, and the scenery, objects 0, or speaker 100 around the glass body 10 through the side surfaces 41 and top surface 42 of the chamber 40. It is preferable that the top surface 42 is flat in order to suppress unnecessary diffuse reflection of light and increase visibility.
By placing a transparent chamber 40 within the glass body 10, it is possible to forcibly create a transparent area within the glass body 10 at all times, regardless of whether or not a beverage L is filled inside the glass body 10 (or regardless of the level of light transmittance of the beverage L) (in other words, by making the chamber 40 transparent, the chamber 40 can also be used as a light-transmitting tunnel).
Usually, the beverage L filled inside the glass body 10 may be not only water but also colored beverages with low light transmittance such as beer and wine, but even when such a beverage with low light transmittance is filled in the glass body 10, the distance d4 (more precisely, the longest distance) between the inner wall surface 13 of the glass body 10 and the side surface 41 of the chamber 40 may be 1 cm or less so that the speaker 100 and the object 0 can be seen by the user U through the glass body 10 and the diaphragm 20. By setting the distance d4 to 1 cm or less, even when the beverage L with very low light transmittance (e.g., red wine, etc.) is filled in the glass body 10, the light that enters the glass body 10 by passing through or via the chamber 40 (transparent region) in the glass body 10 can pass through or penetrate the glass body 10 (light can pass through or penetrate even beverages with low light transmittance if the distance is 1 cm or less).
By making the distance d4<1 [cm], regardless of the presence or absence of light transmission of the beverage L in the glass body 10, light that enters the beverage presentation glass 1 (glass body 10) from the side passes through the diaphragm 20 and the side of the glass body 10 as shown by the light path W in Figures 6 and 7, and then passes through the side 41 of the chamber 40 and the space 45 inside the chamber to reach the outside of the glass body 10, where the light can be visually recognized by the eyes of the user U. By making the distance d4<1 [cm], it is possible to make the speaker and the scenery around the glass appear to emerge in the beverage L in the glass body 10.

The present invention is a glass for presenting beverages that resonates and amplifies sounds within the glass and efficiently diffuses the amplified sounds from the upper opening of the glass body. As described above, the present invention has industrial applicability.

L Beverage (liquid)
d Distance (distance between speaker and diaphragm)
W Light path (path of transmitted light)
U User h Height (height to water surface)
h1 Vertical length of the glass body (length of the glass body in the vertical direction)
h2 Vertical length of the diaphragm (length of the diaphragm in the longitudinal direction)
d1 Thickness of the upper end area of the diaphragm d2 Thickness of the lower end area of the diaphragm d3 Distance (distance between the diaphragm surface and the side of the chamber)
d4 Distance (distance between the inner wall of the glass body and the side of the chamber)
O Object R1 Diameter (diameter of upper opening)
R2 diameter (diameter of the bottom surface of the inner wall of the glass body)
1 Beverage presentation glass 10 Glass body 11 Upper opening 12 Bottom surface (bottom surface of the inner wall surface of the glass body)
13 Glass inner wall surface (inner wall surface of glass body 10)
14 Bottom 15 Fixing mechanism 16 Connection point 20 Vibration plate 30 Space (resonance space or space surrounded by the inner wall surface of the glass body 10 and the beverage L)
40 Chamber (air chamber or hollow box for sound resonance)
41 Side surface 42 Top surface 43 Chamber fixing device (fixing device for fixing the chamber in the glass body)
45 Space (air-filled space for acoustic resonance)
100 Speakers

Claims (10)

A glass body that is a cylindrical body with a bottom and an upper opening that is curved in the horizontal direction;
A flat plate-like diaphragm;
and a fixing mechanism for fixing a speaker to a side surface of the glass body,
The vibration plate is located on a side surface of the glass body,
The surface of the diaphragm is connected to or in close contact with the side surface of the glass body,
The vibration plate is connected to a side surface of the glass body at at least one point,
the fixing mechanism fixes the speaker near the diaphragm while facing the diaphragm;
The diaphragm is connected to or in close contact with a side surface of the glass body with its surface facing the speaker,
The vertical length of the vibration plate is longer than half the vertical length of the glass body,
The vertical length of the vibration plate is shorter than the vertical length of the glass body,
The sound coming from the speaker vibrates the diaphragm,
A beverage presentation glass characterized in that the vibration of the vibrating plate is transmitted to the inner wall surface of the glass body. 2. The beverage presentation glass according to claim 1, wherein the sound of the speaker resonates in a space surrounded by an inner wall surface of the glass body and the beverage in the glass body. 3. A beverage presentation glass as claimed in claim 1, characterized in that the diameter of the upper opening of the glass body is larger than the diameter of the bottom surface of the inner wall of the glass body. 4. The beverage presentation glass according to claim 1, wherein the vibration plate and the glass body are made of materials having the same acoustic impedance. 5. A beverage presentation glass as claimed in any one of claims 1 to 4, characterized in that the distance between the speaker and the diaphragm is 18 mm or less. 6. The beverage presentation glass according to claim 1, wherein the distance between the speaker and the diaphragm is variable. A beverage presentation glass as described in any one of claims 1 to 6, characterized in that the thickness of the upper end area of the diaphragm is thinner than the thickness of the lower end area of the diaphragm. The speaker can be fixed in the vicinity of the diaphragm with the distance between the speaker and the diaphragm being 18 mm or less,
8. A beverage presentation glass as claimed in any one of claims 1 to 7, characterized in that the speaker can be fixed in the vicinity of the diaphragm in a non-contact state between the speaker and the diaphragm. The glass body is provided with a hollow chamber for resonating the sound of the speaker,
The chamber has an air-filled space therein,
The distance between the side surface of the chamber and the surface of the vibration plate is 18 mm or less,
The volume of the chamber is at least 1/3 of the volume of the glass body,
9. A beverage presentation glass as claimed in any one of claims 1 to 8, characterized in that the sound of the speaker resonates in the air-filled space inside the chamber. the chamber has a transparent top surface at its upper portion;
All sides of the chamber are transparent;
The diaphragm is transparent;
The sides of the glass body are all transparent,
The beverage presentation glass according to claim 9, characterized in that the distance between the inner wall surface of the glass body and the side surface of the chamber is 1 cm or less.

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