Video projector with battery and replaceable lamp unit

A video projector, comprising:

• a cabinet;
• a projection lens arranged in said cabinet;
• a transmission type display means arranged in said cabinet and displaying an image based on a video signal;
• a lamp unit arranged in said cabinet;
• and
• a battery mounting section formed on the bottom of said cabinet to mount a projector driving battery so that said battery provides increased stability to said projector when mounted,
• wherein said cabinet includes outer covers that are separated right and left, and a lower cover arranged below the outer covers.

A video projector, comprising:

• a cabinet having a lamp mounting section in its back;
• a projection lens arranged in said cabinet;
• a transmission type display means arranged in said cabinet and displaying an image based on a video signal;
• a power source output terminal arranged in said cabinet and facing said lamp mounting section;
• and
• a lamp unit freely mountable on said lamp mounting section and formed by uniting a lamp and a power input terminal for the lamp, said lamp being a halogen lamp with a mirror, and said lamp unit comprising said halogen lamp with a mirror and said power input terminal, molded with resin as a unit;
• wherein said power source output terminal and said power input terminal are connected when said lamp unit is mounted.

A video projector, comprising:

• a cabinet having a lamp mounting section in its back;
• a projection lens arranged in said cabinet;
• a transmission type display means arranged in said cabinet and displaying an image based on a video signal;
• a power source output terminal arranged in said cabinet and facing said lamp mounting section;
• a battery mounting section formed on the bottom of said cabinet to mount a projector driving battery so that said projector sits on top of said battery so that said battery provides increased stability to said projector when mounted;
• and
• a lamp unit freely mounted on said lamp mounting section and formed by uniting a lamp and a power input terminal for said lamp;
• said power source output terminal and said power input terminal being connected when said lamp unit is mounted.

A video projector, comprising:

• a cabinet having a lamp mounting section in its back;
• a projection lens arranged in said cabinet;
• a transmission type display means arranged in said cabinet and displaying an image based on a video signal;
• a power source output terminal arranged in said cabinet and facing said lamp mounting section;
• a battery mounting section formed on the bottom of said cabinet to mount a projector driving battery so that said battery provides increased stability to said projector when mounted;
• and
• a lamp unit freely mounted on said lamp mounting section and formed by uniting a lamp and a power input terminal for said lamp;
• said power source output terminal and said power input terminal being connected when said lamp unit is mounted,
• wherein said cabinet includes outer covers that are separated right and left and a lower cover arranged below said outer covers.

A video projector, comprising:

• a cabinet having a lamp mounting section in its back;
• a projection lens arranged in said cabinet;
• a transmission type display means arranged in said cabinet and displaying an image based on a video signal;
• a power source output terminal arranged in said cabinet and facing said lamp mounting section;
• and
• a lamp unit freely mountable on said lamp mounting section and formed by uniting a lamp and a power input terminal for the lamp,
• said power source output terminal and said power input terminal being connected when said lamp unit is mounted;
• and
• wherein said lamp unit also serves as a lens cap.

A video projector, comprising:

• a cabinet having a lamp mounting section in its back;
• a projection lens arranged in said cabinet;
• a transmission type display means arranged in said cabinet and displaying an image based on a video signal;
• a power source output terminal arranged in said cabinet and facing said lamp mounting section;
• and
• a lamp unit freely mountable on said lamp mounting section and formed by uniting a lamp and a power input terminal for the lamp,
• said power source output terminal and said power input terminal being connected when said lamp unit is mounted;
• and
• wherein said projection lens stretches and contracts freely so that said projection lens will stretch out from said cabinet when in use and contract to enter said cabinet when not in use.