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    • 63. 发明专利
    • UNDERGROUND SPORTS FACILITY UTILIZING TUNNEL
    • JPH0797872A
    • 1995-04-11
    • JP11776393
    • 1993-04-20
    • ITAI ATSUSHIHAYASHI MITSUNORI
    • ITAI ATSUSHI
    • A63C19/00A63C19/10E04H3/14
    • PURPOSE:To construct a skiing ground, ice skating rink, or bicycle racing course which can be easily used independently of the seasons, under the ground close to a city. CONSTITUTION:A tunnel ski course 1 having a slope of 15 deg. in average is formed on a mountain close to a city, and hotels are constructed at both the ends, and the management department for the skiing ground is set, and used for the lodging and rest of users, and a protecting net 4 is laid in the intermediate part between the upper and lower parts of the tunnel ski course 1, and the lower side is used as a skiing part 5. A lift 6 is installed on the upper side, and persons and instruments are transported between the hotels at both the ends, and an artificial snow spraying device 7 is installed on the undersurface of the protecting net 4, and a piled snow layer 9 is formed on a tunnel floor 8, and a skiing ground is constructed. Similarly, on the underground, an elliptical tunnel permitting the communication in the longer axis and shorter axis directions is constructed, and an artificial ice forming device is installed, and an underground ice skating rink is constructed, and a bicycle racing course having an inclined part on the elliptical outer peripheral side is constructed.
    • 67. 发明专利
    • SKIING GROUND EQUIPMENT
    • JPH0739617A
    • 1995-02-10
    • JP20888793
    • 1993-07-30
    • MITSUI CONSTR
    • KOBA TAKEO
    • A63C19/10E04H15/02
    • PURPOSE:To prevent snow from melting by disposing selectively a roof on a slope in accordance with a solar radiation condition by driving to cover and open the roof against the slope by a roof opening/closing control means in accordance with the heat radiation income/outgo quantity of the slope detected by a heat radiation income/ outgo quantity detecting means. CONSTITUTION:In the upper part of a slope 2, a roof 9 is formed so as to freely drive to cover and open the slope 2, and a radiation income-outgo meter 11 for detecting the heat radiation income/outgo quantity of the slope 2, and a heat radiation income- outgo quantity detecting means of a radiation income/outgo quantity detecting means as a radiation income/outgo quantity detecting part 19, etc., are equipped. Also, this equipment is provided with a roof opening/closing control means such as roof opening/ closing deciding part 17, a winch driving control part 21, a winch driving 61, etc., for controlling driving to cover and open the roof 9 against the slope 2 in accordance with the heat radiation income/outgo quantity of the slope 2 detected by the heat radiation income/outgo quantity detecting means. In accordance with the heat radiation income/outgo quantity detected by the heat radiation income/outgo detecting means, the roof opening/closing control means drives to cover and open the roof 9. In such a way, show melting on the slope 2 can be prevented, and it can be executed easily to maintain a snowfall and to secure a condition of the slope.