JP2007267310A - In-flight ear protection device for jet airliner, and ear muff - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it easier to engage in work soon after arrival by reducing fatigue of traveling by a jet airliner. <P>SOLUTION: Since the in-flight ear muff (ear protection device) 1 for jet airliner is used in an airplane; a movable hydraulic damper can be used, cups flexibly follow the motion of the head, and the fixed pressure of the cup can be fine-tuned. Also, an eye visor is used in place of an eye mask. A veil is used in place of a mask. The eye visor and veil are so constructed that they protect the face of a passenger against impact from before and a head band is so constructed that it protects it against impact from above. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  It relates to earmuffs (soundproof protective equipment). “Noise-cancelling headphones” that acoustically cancel external noise by generating sound waves in the opposite phase to the noise.

  Soundproof protective equipment for aircraft carrier deck workers, antibacterial mask.

Traveling on a jetliner is exhausted due to various factors, so you cannot act immediately after arriving at your destination. It has been pointed out that airborne diseases such as new pneumonia and avian influenza may be rapidly transmitted on a global scale due to the development of jet passenger aircraft. It is an object to reduce the fatigue when traveling with jet passenger aircraft and to slow down the spread of airborne diseases. Typical causes of fatigue include Jetlag and economy class syndrome, but there are other in-flight noise levels of 85 dB or more. The main in-flight noise of jet passenger aircraft is the propulsion sound of the jet engine and the frictional sound of the airframe and the air that enter through the fuselage skin. In-flight noise that originates in the cabin is spoken by other passengers who are disturbed because they are seated close to the indoor ventilation sound. The causes of fatigue other than sound include dry in-flight air and atmospheric pressure of about 60% on the ground. In a fateful aircraft that must be light in weight, a cabin noise reduction device (NVS) that significantly reduces noise during flight by mechanically creating vibration in the cabin opposite to that of engine noise Although there are things, thorough sound insulation and pressurization are currently technically difficult. The in-flight noise of jet passenger aircraft during cruises was 84.9db for A300 and 91.8db for B777, and the noise level of the Shinkansen running in the tunnel was heard throughout the cruise.

  In order to solve the above problems, the first invention is an in-flight earmuff (soundproof protector) that matches the characteristics of in-flight noise of a jet passenger aircraft. The second and subsequent inventions are additional functions utilizing the earmuff (soundproof protector) structure, the second invention is a sleep eye visor, and the third invention is a veil.

  Fatigue caused by traveling on a jet passenger plane is reduced, making it easier to enter work as soon as it arrives. If the veil of the invention 3 is made highly antibacterial, the speed at which airborne diseases such as new pneumonia and bird flu spread on a global scale can be slowed by a passenger jet in a closed room.

The conventional earmuffs are designed for ground maintenance personnel outside the aircraft, and the target sound source is the idle sound of a jet engine heard directly outdoors. The present invention is based on the premise that passengers will use the aircraft in a jet passenger aircraft, and performs a silencing process focused on reducing noise specific to passenger cabins in jet passenger aircraft. The main noise in the cabin is the jet engine propulsion sound through the fuselage panel and the frictional noise between the fuselage and the atmosphere, and because it sits close to the indoor air conditioning ventilation sound originating from the cabin. In addition, other passengers who are annoying are talking. The conventional ear muffs are assumed to be used in harsh outdoor conditions, but the in-flight ear muffs of the present invention, which are assumed to be used in the passenger cabin, are used by passengers who sit in the seat and hardly walk. And weather resistance is not required. On the other hand, for passengers, various devices that enable a long wearing time are required, and the headband uses a lot of mesh material and is mounted in front of the top of the head so that it will be lighter and not steamed. Wear around the ear with a hydraulic damper. This earmuff can use a movable hydraulic damper for in-flight use, and the cup can flexibly follow the movement of the head, and the fixing pressure of the cup can be finely adjusted. On the other hand, the conventional ear muffs are tired from long-term use because the cup is fixed by the elasticity of the headband. The back of the ear hole is a curve that approximates the curve of a round head, and forms a pillow when sleeping. The material of the cup behind the ear hole is soft and elastic and holds the user's head softly. Unlike the conventional earmuffs, the left and right sides are designed differently, so the internal shape of the cup is more appropriate for the shape of the ear and the way the sound is heard. By allowing the earplug root to be fixed inside the cup, it also reduces the wearing comfort of the earplug. An eye visor is used instead of an eye mask, but unlike an eye mask that uses a rubber band to be worn on the ear and is fixed to the eye, a vine-like column of glasses is inserted into an ear muff socket and fixed. When it is necessary to see the outside world, it is named “eye visor” because it has a visor function that jumps upward as shown in FIG. The veil is used in place of the mask, but unlike the mask that is fixed around the mouth with a rubber band to be worn on the ear, the structure is suspended from the free-form frame at the top of the veil. Secure to the socket. When not in use, only one post can be removed. Unlike the mask, the veil also prevents the neck skin from being exposed. The veil should have high antibacterial properties. The earmuffs are designed to be assembling or foldable and not bulky. In the past, in order to hear the voices and cues of nearby people, it was necessary to lift or remove the earmuffs. Therefore, as a function, it is possible to safely listen to surrounding sounds as needed by simply pressing the PLT (Push-TO-Listen) button. For in-flight installation, you should be able to listen to in-flight emergency broadcasts.

"Effect of the embodiment"
If both the mask and eye mask are worn for a long time, blood flow is blocked by the rubber band, but in the present invention, both the eye visor and veil parts are supported by the earmuffs with the support, so the feeling of pressure on the face is Extremely few.

"Other embodiments"
The eye visor and veil are designed to protect the passenger's face from forward impacts and the headband from upward impacts. Standardize so that in-flight emergency broadcasts can be received on any airline passenger aircraft using this earmuff. It is difficult to introduce the following because it causes an increase in weight and costs, but a noise canceling system is introduced and a function for listening to music is added. Add LED light. Modifications to use this earmuff outside of the aircraft such as other transportation, sleeping or resting places.

The perspective view of one embodiment of this invention is shown. The top view from the top of one embodiment of this invention is shown. The perspective view of one embodiment of this invention is shown.

Explanation of symbols

Reference sign in “FIG. 1” 1 Ear muff (cup part) 2 Ear muff headband 3 Damper for fixing the cup (with adjustment function) 4 Reference sign in cup part and band part “FIG. 2” 1 Flexible along the curve of the head Cup rear edge 2 earmuff (cup part)
3 Nose 4 Mesh headband 5 Microphone (for PTL) 6 Ear muff cup post “Fig. 3” 1 Ear muff (cup part) 2 PTL switch 3 Microphone (for PTL) 4 Eye visor (bounce-up position)
5 Eye visor frame 6 Eye visor support 7 Eye visor support insertion part 8 Bale one-touch mounting part 9 Bale frame 10 Bale (high antibacterial specification)

Claims (3)

. In-flight soundproofing equipment (Earmuffs) that suits the characteristics of in-flight noise and equipment for comfortable travel on jet passenger aircraft. A sleeping eye visor to be worn on the earmuff of claim 1. A veil to be attached to the earmuff according to claim 1.

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