LIGHT SOURCE UNIT AND LUMINAIRE

To uniformize light passing through a cover.SOLUTION: A light source unit 2 comprises a light source module 20, a supporting member 21 supporting the light source module 20, and a cover 22 having translucency, and covering the light source module 20. The supporting member 21 comprises a main part 210, and a cover attachment piece 214. The cover 22 comprises a front wall 220 opposed to a plurality of LEDs 201 along a thickness direction of a board 200, one or more side walls 221 protruding in a direction in which they get close to the board 200 from a peripheral edge of the front wall 220, and an attachment part 222 of which a portion is inserted into a space of the cover attachment piece 214. The attachment part 222 comprises an insertion piece 2221 inserted into the space, and an opposed piece 2222 opposed to the insertion piece 2221 across the cover attachment piece 214. The attachment part 222 comprises a protruding piece 2224 protruding toward the cover attachment piece 214 from the opposed piece 2222.SELECTED DRAWING: Figure 11 【課題】カバーを透過する光の均斉化を図る。【解決手段】光源ユニット２は、光源モジュール２０と、光源モジュール２０を支持する支持部材２１と、透光性を有して光源モジュール２０を覆うカバー２２とを備える。支持部材２１は、主部２１０と、カバー取付片２１４とを有する。カバー２２は、基板２００の厚み方向に沿って複数のＬＥＤ２０１と対向する前壁２２０と、前壁２２０の周縁から基板２００に近付く向きに突出する１つ以上の側壁２２１と、カバー取付片２１４の空間に一部が挿入される取付部２２２とを有する。取付部２２２は、空間に挿入される挿入片２２２１と、カバー取付片２１４を挟んで挿入片２２２１と対向する対向片２２２２とを有する。取付部２２２は、対向片２２２２からカバー取付片２１４に向かって突出する突片２２２４を有する。【選択図】 図１１