摘要：
Described is a modular LED lamp structure comprising a LED light source (7) of the type mounted on a plate, a heat sink element (3) having a flat face (6) for supporting the LED light source (7) and a central axis (A1) perpendicular to the flat face (6), a mask (8) for locking the light source (7) designed to press the light source (7) itself, keeping it pressed against the flat supporting face (6) of the sink element (3), means (9) for removably fastening the metal mask (8) to the sink element (3).
权利要求：
CLAIMS
1. A modular LED lamp structure comprising:
- an LED light source (7),
- a heat sink element (3) having a flat supporting face (6) for the LED light source (7) and a central axis (A1) which is perpendicular to the flat face
(6),
- means (2, 20) for conditioning the beam of light emitted by the light source (7),
- a mask (8) for blocking the light source (7) designed to press the light source (7) by keeping it pressed against the flat supporting face (6) of the sink element (3), the mask (8) comprising an engaging area (8c) for the conditioning means (2, 20),
- means (9) for removably fastening the mask (8) to the sink element (3) .characterised in that the engaging area (8c) extends circumferentially inside the outer cylindrical portion (8b) to define, together with a suitably matched end portion (12) of the conditioning means (2, 20), a bayonet coupling designed to guarantee stable positioning of the conditioning means (2, 20) relative to the sink element (3), and in that it comprises snap-on means (16) for fastening the bayonet coupling.
2. The modular structure according to claim 1 , characterised in that it comprises an interchangeable adapter element (11) interposed between the light source (7) and the mask (8) to make the mask (8) compatible with different light sources.
3. The modular structure according to claim 2, characterised in that the blocking mask (8) and the adapter element (11) have respective matching faces designed to engage with each other to define a shape coupling, the shape defining the coupling having asymmetrical profile to define a single angular coupling position relative to the central axis (A1).
4. The modular structure according to any one of claims 1 to 3, characterised in that the metal mask (8) comprises a central portion (8a) for engaging with the adapter element (11) and an outer cylindrical portion (8b) enclosing the central portion (8a) and designed to contribute to dissipating the heat generated by the light source (7).
5. The modular structure according to claim 4, characterised in that the central axis (A2) of the outer cylindrical portion (8b) extends perpendicular to the flat supporting face (6) of the sink element (3).
6. A method for replacing a LED light source (7) in a modular lamp structure (1) comprising a LED light source (7), a heat sink element (3) having a flat face (6) for supporting the LED light source (7) and a central axis (A1) perpendicular to the flat face (6), a mask (8) for locking the light source (7) designed to press the light source (7) itself, keeping it pressed against the flat supporting face (6) of the sink element (3), an interchangeable adapter element (11) interposed between the light source (7) and the mask (8) for making the mask (8) compatible with different light sources, and means (9) for removably fastening the metal mask (8) to the sink element (3), characterised in that it comprises the following steps:
- freeing the metal mask (8) from the sink element (3) by acting on the removable fastening means,
- removing the LED light source (7) to be substituted and the respective interchangeable adapter element (1 ),
- positioning a new different LED light source (7) on the sink element (3),
- positioning a new adapter element (11) shaped to adapt to the new LED light source (7),
- positioning the metal mask (8) on the adapter element (11) and constraining it to the sink element (3) by acting on the removable fastening means (9).