| 摘要 |
A lighting apparatus has a casing pivotally separable along an intermediate parting line so as to facilitate various operations such as assembly, replacement, repair and checking of components contained therein. These components can be a light source, a projector lens, a variable masking device and a cooling fan, for example. Additionally, displaceable pivots are provided along the parting line for pulling a pivotal mechanism into the casing as respective casing halves are coupled to each other. The pivots can be displaced as the casing is opened and closed so that not only the opening and closing operation can be smoothly performed but also the external appearance of the apparatus is never injured since the pivotal mechanism is not exposed and no gap is developed along the parting line upon completely coupling the casing halves. Furthermore, the pivots are displaceable against the tensile force of tension spring members and, after the casing halves have been coupled to each other, the pivotal mechanism is held by the tension spring members within the casing to assure a simplified structure and a reliable coupling effect. |
