JPH02132931A - Radio broadcasting system in train - Google Patents

Abstract

PURPOSE:To offer the broadcasting service of the amusement, etc., of good quality to the passenger of a train, etc., by installing the radio transmitter of a weak radio wave at each car, and letting the passenger have a receiver to receive transmission from the radio transmitter. CONSTITUTION:A broadcasting center is provided at a trainman's cab 3 located at a first car 1a or a last car 1k of the train, and simultaneously, the radio transmitters 2 installed at each car 1a to 1k are connected by a wire. Then, the passenger carries the small-sized receiver separately so that he can receive information from the transmitter 2 by selecting the channel of his favorite frequency. Namely, it is made possible to perform the transmission of plural channels by plural waves by installing the transmitters 2 of the weak wave at every car, and in addition, the leakage of the radio wave to the outside of the car is limited within the scope allowed by radio law by the arrangement of antennas. Thus, the broadcasting service of the amusement, etc., of the good quality can be offered to the passenger of the train, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a broadcasting system using weak radio waves for providing broadcasting services such as entertainment or information to passengers on evening cars or trains. [Prior Art] Conventionally, as a system for providing services such as entertainment or information to passengers, there are systems used in aircraft. This system uses a speaking tube, and passengers can receive the broadcasting service of the shell channel through earphones and the speaking tube. Currently, this type of service is not available for ground trains, etc. Therefore, passengers who wish to listen to radio broadcasts can either bring a radio receiver into the car and place the receiver next to the window to enjoy radio broadcasts, or enjoy music using a portable playback device using a tape recorder. It was. [Issues to be solved] As mentioned above, when bringing a radio receiver into a train to receive general public broadcasting, there are changes in sensitivity due to changes in the orientation of the broadcasting station and the train, and changes in sensitivity when moving away from the window. There has been a problem in that it is difficult to maintain high-quality reception because reception sensitivity deteriorates and reception becomes impossible inside the tunnel. Also, in the case of trains and trains, unlike in the case of airplanes,
Since passengers often board and disembark in a relatively short period of time and do not reserve seats, and moreover, there are many cases where there are more passengers than there are seats, it is not possible to use the above-mentioned broadcasting service as used on airplanes. The problem was that it was not practical. SUMMARY OF THE INVENTION An object of the present invention is to provide an in-train radio broadcasting system that can solve the above-mentioned problems and provide high-quality entertainment and other broadcasting services to passengers on trains. [Means for Solving the Problems] In order to achieve the above object, the in-train radio broadcasting system of the present invention installs a weak radio wave radio broadcaster in each car of a train, and allows passengers to use a receiver to listen to the radio broadcasting system. It is configured so that it can receive broadcast services such as entertainment and information from a broadcasting device. [Example] An example of the present invention will be described below with reference to the drawings. Figure 1 is a schematic diagram showing an example of an in-train radio broadcast system related to the Kiwagawa River. In the figure, 1 is a train, and each of its cars is la to 1k.
A radio broadcaster 2 with weak radio waves is installed inside. In this embodiment, a broadcasting center is provided in the crew cabin 3 in the first car 1a or the last car 1k of the train, and each car
The wireless broadcasting devices 2 from a to 1k are connected by wire. The broadcast content may be a service using a recording medium such as a tape recorder, or it is also possible to have equipment for receiving public broadcasting on the train and distribute it to each vehicle 1a to 1k. Radio frequencies can range from VHF to optical, but the VHF band is currently considered to be effective for realizing inexpensive receivers. On the other hand, each passenger individually carries a small receiver and can receive information from the radio broadcaster 2 by selecting a channel of their favorite frequency. By using earphones, you can enjoy the game on your own without bothering others. Furthermore, since the system of this embodiment uses wireless, there is no need to fix your seat, and you can enjoy broadcasting even while standing. Furthermore, the length of the cars in Train 1 is several tens of meters at most, and in most cases they are covered with iron plates except for the windows, so it is possible to obtain a fairly good radio wave shielding effect. Therefore, by utilizing this point, it is possible to transmit weak radio waves [2] to each vehicle and transmit multiple channels using multiple waves, and depending on the antenna arrangement, leakage of radio waves to the outside of the vehicle can be prevented. It is quite possible to keep it below the range allowed by the Radio Law. [Effects of the Invention] As explained above, the present invention provides entertainment by installing a radio broadcaster of weak radio waves in each car of a train, and allowing passengers to have receivers for receiving transmissions from the radio broadcaster. This has the effect of allowing users to receive high-quality broadcasting services such as information and information.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the in-train radio broadcast system according to the present invention. l: Evening car 1a to 1k 2 car 2: Radio broadcaster

Claims (1)

[Claims] An in-train radio broadcasting system in which a radio broadcaster emitting weak radio waves is installed in each car of a train, and passengers can use receivers to receive broadcast services such as entertainment and information from the radio broadcaster. .