Abstract: A game machine according to the present invention includes claws for holding a thing. The machine also includes an acquisition detector, a closing pivotal angle controller, a continuous play controller and a playable game computer. If a player has acquired nothing from the game machine in the last game, and the detector outputs an acquisition failure signal, the angle controller increases the closing pivotal angle of the claws. If the player has acquired a thing from the machine in the last game, and the detector outputs an acquisition success signal, the angle controller decreases the pivotal angle. If the play controller outputs a continuous play signal, the game computer increases the number of playable games.

Abstract: A lighting fixture mounting device comprises a U shape channel having a bottom plate, side walls, extruding portions extruding sideward from both sides of the bottom plate and a wiring hole bored through the bottom plate. The lighting fixture is attached to the extruding portions, a wiring of the lighting fixture passes through the wiring hole and inside of the U shape channel to be connected to an external electric source, and the side walls are fixed to an object to which the lighting fixture is to be fixed. A lamp protecting device for a lighting fixture embedded in a built-in hole formed in a ceiling and having a flange formed on a lower end of a case of the lighting fixture and exposed out of the ceiling, comprises a guard fixing attachment made of a rectangular plate having a cutout through which the case can be passed through and outer ends folded to form steps corresponding to the thickness of the flange, and a guard made of circular members and rod like members connecting the circular members.

Abstract: A game machine according to the present invention includes claws for holding a thing. The machine also includes an acquisition detecting means, a closing pivotal angle controlling means, a continuous play controlling means and a playable game computing means. If a player has acquired nothing from the game machine in the last game, and the detecting means outputs an acquisition failure signal, the angle controlling means increases the closing pivotal angle of the claws. If the player has acquired a thing from the machine in the last game, and the detecting means outputs an acquisition success signal, the angle controlling means decreases the pivotal angle. If the play controlling means outputs a continuous play signal, the game computing means increases the number of playable games.

Abstract: A lighting fixture mounting device comprises a U shape channel having a bottom plate, side walls, extruding portions extruding sideward from both sides of the bottom plate and a wiring hole bored through the bottom plate. The lighting fixture is attached to the extruding portions, a wiring of the lighting fixture passes through the wiring hole and inside of the U shape channel to be connected to an external electric source, and the side walls are fixed to an object to which the lighting fixture is to be fixed. A lamp protecting device for a lighting fixture embedded in a built-in hole formed in a ceiling and having a flange formed on a lower end of a case of the lighting fixture and exposed out of the ceiling, comprises a guard fixing attachment made of a rectangular plate having a cutout through which the case can be passed through and outer ends folded to form steps corresponding to the thickness of the flange, and a guard made of circular members and rod like members connecting the circular members.

Abstract: A lighting fixture mounting device comprises a U shape channel having a bottom plate, side walls, extruding portions extruding sideward from both sides of the bottom plate and a wiring hole bored through the bottom plate. The lighting fixture is attached to the extruding portions, a wiring of the lighting fixture passes through the wiring hole and inside of the U shape channel to be connected to an external electric source, and the side walls are fixed to an object to which the lighting fixture is to be fixed.