| 摘要 |
PROBLEM TO BE SOLVED: To cope with the variety of lamp base shapes with ease by providing an opening portion for accepting a moving key in a lamp base body, and determining the dimension of the opening so as to limit the number of selected positions for moving key turning. SOLUTION: Since a moving key 14 can move between selected key positions during the process of its manufacturing, a large number of different lamp shapes can be formed by using a single lamp base and the moving key. The moving key 14 and fixed keys 32, 34 can have different shapes. For example, a lamp device 10 can contains one or more fixed key and moving key. A key support member can be formed into a suitable shape for fitting the moving key to a lamp base body 20. The moving key 14 can have different sizes and shapes. The inner face of the key support member and the circular surface 50 of the lamp base body 20 can be smooth. The moving key 14 can be continuously turned in an angle determined by the opening portion. |
