A whistle used to call for help during a disaster.

Abstract

The present invention provides a long, slender, cylindrical whistle that can be blown to call for help during a disaster and that emits a sound easily detectable by rescue dogs. [Solution] The whistle 1 has a window 5 at a predetermined distance from the mouthpiece 3 that generates sound through vibrations as air blown in from the mouthpiece 3 flows out. A tongue 6 that fits into the space 7 of the whistle body 2 is attached to the window 5. The tongue 6 is columnar in shape, with a notch in the upper surface on the window side and a lower, inclined flat surface 8 on the mouthpiece side. A gap 10 through which air flows is provided between the flat surface 8 and the inner circumferential surface 9.

Description

Technical Field

[0001] The present invention relates to a whistle for disasters that can be used as a means to notify one's location when trapped in a collapsed house due to a disaster, buried alive by a landslide, or encountered an accident while mountain climbing.

Background Art

[0002] A whistle can be used to notify others of one's location and seek help during disasters, and various disaster prevention whistles are commercially available. There are various forms of disaster prevention whistles, but generally, a small vertical whistle that is not obstructive even when carried around and is convenient to carry is common. The vertical whistle for disasters has a blowing hole at one end of a cylindrical whistle body, the other end is closed, and the whistle body is provided with windows.

[0003] When blowing air from the blowing hole, the air flows out through the windows, and at that time, the air vibrates to generate sound. Depending on the length of the whistle body and the shape of the windows through which the air flows out, the height (frequency) and loudness (decibel) of the sound will be different. When trapped in a collapsed house, buried alive by a landslide, or encountered an accident while mountain climbing, etc., it is possible to call for help by shouting loudly to notify one's location.

[0004] However, it is not easy to keep shouting loudly, and one will get tired and the voice will become hoarse. Therefore, it is convenient to have a whistle that can be used during disasters, and its effect is significant. With a whistle, one can keep blowing the whistle for a relatively long time without using much physical strength or energy, and the possibility of people around noticing the sound of the whistle and providing help will be high.

[0005] By the way, there are various sounds generated by blowing a whistle. Generally, as the tube becomes longer, the frequency becomes smaller and the sound becomes lower, and as it becomes shorter, the frequency becomes larger and a higher sound is produced. The optimal frequency range for human hearing is 2,000 Hz, while the optimal frequency range for dogs is 8,000 Hz. In other words, dogs can hear much higher frequencies than humans, and they can also determine the direction of a sound by moving their ears.

[0006] For this reason, dogs are often used to search for people trapped during disasters, and in some cases, they can be used to rescue people by sensing even the slightest human presence. Of course, if it's the sound of a whistle blown by a person, a dog can detect it and make a rescue even if it's a faint sound from far away. By the way, there are various known documents concerning whistles that can be used in times of disaster. For example, the "foldable card-type whistle" registered under Utility Model Registration No. 3201223 is a single card that can be inserted into the card slot of a portable information terminal cover or a wallet, and functions as a whistle when folded in emergencies such as disasters.

[0007] The "Portable Whistle Easily Stored in Wallets," registered as a utility model (No. 3185025), is a portable whistle designed for disaster situations, life-saving, emergency, and survival, that is compact, difficult to lose, and does not interfere with opening and closing a wallet. The outer diameter of the whistle is shaped to be as narrow as the width of the wallet's gusset, and a hook for securing the whistle is provided at the top of the whistle. The maximum thickness of the whistle's outer diameter is equivalent to the thickness of five 100-yen coins. By attaching the hook to the gusset of the coin storage pocket of the wallet, the whistle is secured along the gusset, making it less likely to be lost and not interfering with opening and closing the wallet. [Patent Document 1] "Foldable card-type whistle" as registered in Utility Model Registration No. 3201223 [Patent Document 2] Utility Model Registration No. 3185025: "Portable whistle that is easy to store in wallets, etc." [Disclosure of the Invention] [Problems that the invention aims to solve]

[0008] As such, various types of whistles that can be used to call for help during disasters have been known for some time. The present invention provides a whistle for use during disasters that can emit a sound that is easily detected by rescue dogs used during disasters. [Means for solving the problem]

[0009] This whistle is designed for use in disaster situations, allowing you to signal your location by blowing it, even if you are trapped in a collapsed house, buried alive in a landslide, or caught in an avalanche. This whistle is designed to produce sounds primarily in the 6kHz range, which is said to be easily heard when blown from a confined space, and also to generate sounds above 10kHz, which are audible to rescue dogs.

[0010] The flute of this invention is cylindrical and is a small, vertical flute that can be worn at all times without being cumbersome. You are free to carry it however you like; you can put it in your wallet, wear it around your neck with a strap, or connect it to your smartphone. The flute of this invention, which is a cylindrical vertical flute, has a mouthpiece that is inserted into the mouth, and a window is provided at a predetermined distance from the mouthpiece. Air blown into the mouthpiece flows out through the window, and sound is generated by the vibration of the air at that time. In this invention, a tongue is attached at the position of the window.

[0011] The tongue is a small, cylindrical piece that fits into the space of the tubular flute body and has a flat surface formed by cutting out a portion of its outer surface. The flat surface is located on the window side, so that the air blown in from the mouthpiece flows through the gap between the notched flat surface and the inner surface of the flute body and flows out through the window. Here, the flat surface is inclined, and the gap on the mouthpiece side is larger. [Effects of the Invention]

[0012] The whistle for use in disasters according to this invention is a small, cylindrical vertical whistle that can be carried at all times without being cumbersome, such as by putting it in a wallet. If you are trapped in a collapsed house during a disaster, buried alive in a landslide, or caught in an avalanche in a snowy mountain, you can blow the whistle to let others know your location.

[0013] The whistle of this invention can change the frequency of the sound it produces depending on how deep it is placed in the mouth. For example, if you blow the flute with the mouthpiece against your lips without putting the entire flute in your mouth, the frequency will be around 6kHz. If you put the flute deeply into your mouth, near the air outlet, the frequency will be 15kHz to 20kHz, and if you put it in your mouth to a position halfway between the mouthpiece and the air outlet, a sound of 10kHz to 13kHz will be produced. Humans can hear sounds with a frequency of around 6kHz, but they cannot hear sounds in the frequency range of 10kHz or higher, whereas rescue dogs can. [Brief explanation of the drawing]

[0014] [Figure 1] This is an embodiment showing a whistle that can be used in times of disaster according to the present invention, where (a) is a plan view, (b) is a cross-sectional view, and (c) is a side view. [Figure 2] These are specific examples of a tongue that fits into the body of a flute, with (a) representing the left side view, (b) the front view, and (c) the right side view. [Figure 3] This is a specific example illustrating the six types of whistles related to this invention. [Modes for carrying out the invention]

[0015] Figure 1 shows an embodiment of the present invention, which allows a whistle 1 to be blown to call for help during a disaster. The whistle 1 is a small, cylindrical vertical whistle with an overall length L1 of 30mm to 40mm and a diameter (outer diameter) D of approximately 7mm. The material is not limited, but generally it is made of resin or aluminum. Because it is light and small, it can be easily carried around. It can be stored in a wallet or hung around the neck with a string and carried around.

[0016] The flute 1 shown in the figure consists of a cylindrical main body 2, a blowing mouth part 3, and a stopper 4. The blowing mouth part 3 is a thicker ring than the main body 2 and is fitted and attached to the blowing mouth side. The stopper 4 is fitted and attached to the tip of the main body 2. A window 5 is cut out on the upper surface side of the main body 2, and a tongue 6 is fitted and fixed in the space 7 of the main body 2 at the position of this window 5. The position L2 of the tongue 6 is not constant and is set to 8 mm to 15 mm. By the way, the air blown in from the blowing mouth part 3 flows through the space 7 and flows out from the window 5, and sound is generated by the vibration at that time.

[0017] Figure 2 is a specific example showing the tongue 6 fitted in the space 7 of the main body 2, where (a) represents a left side view, (b) represents a front view, and (c) represents a right side view respectively. The tongue 6 forms a small column as shown in the figure. The upper surface side is cut out to form an inclined flat surface 8, and moreover, the flat surface 8 is inclined with respect to the central axis O - O. That is, it is a column having an inclined flat surface 8 with the blowing mouth side being low and the window side being high.

[0018] The state where this tongue 6 is fitted and fixed in the space 7 of the main body 2 is shown in Figure 1(b). A gap 10 is formed between the flat surface 8 of the tongue 6 and the inner peripheral surface 9 of the main body 2, and the air blown in from the blowing mouth part 3 flows through the gap 10 and flows out from the window. By the way, it is possible to finely adjust the magnitude (decibel) and frequency (Hz) of the generated sound by changing the shape and size of the tongue 6 fitted in the space 7 of the main body 2. In the present invention, the size and shape of the tongue 6 with respect to the space 7 are not limited.

[0019] Figures 3(a) to 3(f) show specific examples of the whistle 1 according to the present invention, with whistle 1 in (a) having a length of 30 mm, whistle 1 in (b) having a length of 37 mm, whistle 1 in (c) having a length of 39 mm, whistle 1 in (d) having a length of 42 mm, whistle 1 in (e) having a length of 48 mm, and whistle 1 in (f) having a length of 29 mm. Thus, different lengths produce different sounds, and their frequencies also differ. When playing the flute 1, you put the mouthpiece 3 into your mouth and blow air into it, but the frequency of the sound produced will differ depending on how deep you put it in your mouth, that is, the position of your lips.

[0020] Table 1 shows the sound frequencies at the positions in which the mouthpiece 3 of each flute 1 shown in Figures 3(a) to 3(f) is held in the mouth. TIFF0003255828000002.tif54149

[0021] In Table 1 above, A represents the case where the lips are placed against the tip of the mouthpiece 3 and blown, B represents the case where the mouthpiece 3 is placed in the mouth to a position midway between the tip of the mouthpiece 3 and the window 5 and blown, and C represents the case where the mouthpiece 3 is placed far into the mouth and the lips are placed near the window 5 and blown. As shown in this table, blowing with your lips against the tip of mouthpiece 3 produces a low-frequency sound, but blowing with mouthpiece 3 inserted deep into your mouth produces a high-frequency sound, which dogs can hear well. [Explanation of Symbols]

[0022] 1. Flute 2 Main unit 3. Mouthpiece 4 Blocking 5 windows 6 Tongue 7 Space 8 flat surface 9 Inner surface 10 gaps

Claims

1. A long, slender, cylindrical whistle with its tip closed, which can be blown to call for help during a disaster, characterized in that a window is provided at a predetermined distance from the mouthpiece to generate sound through vibrations caused by the air blown into the mouthpiece and outflowing from the mouthpiece, a tongue is attached to the window at the position of the window and fits into the space of the whistle body, the tongue is columnar in shape with a notch in the upper surface on the window side and the mouthpiece side lower to form an inclined flat surface, and a gap is provided between the flat surface and the inner circumferential surface for air to flow through, thus a whistle that can be used during a disaster.

2. A whistle for use in disaster situations according to claim 1, configured to change the frequency of the sound produced by changing the length of time the mouthpiece is placed in the mouth while blowing.

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