Mitsubishi Denki Kabushiki Kaisha

Katsumi Makino

Kazutoshi Ohta

Osamu Toyoda

Kenichi Takemoto

A method for manufacturing a metallic ornamental plate is provided comprising the steps of press-forming a light metal plate to provide a first planar region having a first surface, and a second planar region having a second surface elevated from the first surface; and machine-finishing the elevated second surface of the second planar region to define a distinct ornamental pattern against the first surface wherein the machine-finishing step removes material from the elevated second surface.

Metallic ornamental plate manufacturing method

A process for manufacturing a metallic powder molded article comprising the steps of preparing a mixture of inflammable metallic powders and synthetic resin and molding under pressure and heat the mixture to form a molded body. Pressure and heat are applied such as by buffing onto a surface of the molded body to deform and bond together the metallic powders on the molded body surface to form a substantially continuous metallic surface. A plated layer may be applied on the continuous metallic surface. The process manufactures a metallic powder molded article comprising a molded body of a mixture of inflammable metallic powders and synthetic resin having a substantially continuous metallic surface defined by the metallic powders compacted and bonded together.

Metallic powder molded article and manufacturing method therefor

A lighting device for an elevator car including light sources for emitting light toward the interior of the elevator car and a spectral resolution filter spaced apart and facing the light sources for spectrally resolving the light emitted from the light sources into spectral light with varying colors. The light sources may take the form of a combination of a mirror ball with reflecting surfaces on its outer periphery and a light projector or the form of a plurality of point light sources mounted in a dispersed pattern. The spectral resolution filter may take the form of a flat half mirror surface of a semisphere.

Lighting device for an elevator

A lighting device for an elevator car having walls including a plurality of light sources for emitting light, and a reflection panel adapted to reflect light from the light sources. The reflection panel comprises a metal mirror decorative panel in the form of a spectral resolution reflecting panel having a reflecting diffraction grating which is composed of a plurality of fine mirror reflection surfaces and a plurality of fine frosted surfaces. The light emitted from the light sources is spectrally resolved into spectral light of excellent coloring by the light diffracting action of the reflecting diffraction grating on the spectral resolution reflecting panel so that the illumination of the elevator car interior is greatly improved in terms of luminance and hue thereof.

A method for manufacturing a decorative sheet from a metallic sheet comprises the steps of flame-spraying a coating material onto the surface of a metallic sheet to form a flame-sprayed layer thereon, and roughening the surface of the flame-sprayed layer. The surface of the metallic sheet may be etched in the shape of some pattern to form the flame-sprayed layer, and may be covered with at least one mask having a pattern opening which extends through the mask and has a pattern so as to form the pattern on the surface of the metallic sheet by flame-spraying of the coating material through the pattern opening of the mask.

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Inazawa, Japan

Katsumi Makino