Light-emitting device having a recessed portion in rear panel thereof

A light emitting device including:

• a square-like flat front panel on which fluorescent elements are arranged in a matrix form;
• a square-like rear panel on which cathodes are arranged in a corresponding relation to said fluorescent elements, said cathodes emitting thermoelectrons for causing the fluorescent elements to emit light;
• and
• a square frame-like spacer, one opening portion of said spacer being covered with said front panel and the other opening portion thereof being covered with said rear panel,
• wherein a position adjusting stepped portion for adjusting the position of said rear panel to be fitted with said spacer is formed in a portion of said rear panel to be bonded with the spacer so that said cathodes are made to be in a corresponding relationship to said fluorescent elements, said fluorescent elements on said front panel forming a fluorescent surface which is bonded to said square frame-like spacer;
• wherein said front panel is provided with an anode having a springy projection at a position to be in contact with said spacer.