ILLUMINATING DEVICE, LUMINAIRE, AND MANUFACTURING METHOD FOR ILLUMINATING DEVICE

To provide an illuminating device, etc. that can restrain foreign bodies such as insects and dust from entering a space between a cover member and a supporting member.SOLUTION: An illuminating device 3 comprises a light source part 10, a long supporting member 20 supporting the light source part 10, and a long cover member 30 attached to the supporting member 20. The cover member 30 comprises a main part 31 covering the light source part 10, and an extended part 32 extended toward the light source part 10. In the cover member 30, both end parts in a longitudinal direction of the cover member 30 are blocked. The extended part 32 comprises a contact part 32c in contact with at least one of the supporting member 20 and the light source part 10 while being pressed against it.SELECTED DRAWING: Figure 3 【課題】カバー部材と支持部材との間の空間に虫や埃等の異物が侵入することを抑制できる照明装置等を提供する。【解決手段】照明装置３は、光源部１０と、光源部１０を支持する長尺状の支持部材２０と、支持部材２０に取り付けられた長尺状のカバー部材３０と、を備える。カバー部材３０は、光源部１０を覆う主部３１と、光源部１０に向かって延出する延設部３２とを有する。カバー部材３０は、当該カバー部材３０の長手方向の両端部が閉塞されている。延設部３２は、支持部材２０及び光源部１０の少なくとも一方に押し付けられた状態で当接する当接部３２ｃを有する。【選択図】図３