| 摘要 |
A lighting device comprises a stem (2) and a plurality of rings (10), which can be attached to the stem (2). The attachment means are releasable and comprise first electrical contacts associated with the stem (2) and second electrical contacts (60) associated with the ring (10), a centring pin (40) associated with the stem (2) and a centring hole associated with the ring (10), and an attachment screw associated with the stem (2) and an attachment pin (70) rotatable to engage the screw, pulling it to block the ring (10) to the stem (2). |
