SSL lamp for replacing gas discharge lamp

1. A solid state lighting lamp for replacing a gas discharge lamp having a light emission area with a given light center length (A) and a given light emission area length (B), the solid state lighting lamp comprising:

a base portion including a connector;

an upper portion opposite said base portion; and

a plurality of linear arrays of solid state lighting sources mounted on a body and extending in parallel with a central axis of the lamp, each linear array having a central point within 10% tolerance of the given light center length (A) from the connector, wherein, for each linear array:

an upper solid state lighting source lies on an upper virtual conical surface extending from a point of said central axis coinciding with an upper edge of the light emission area under a first internal angle (α) between said central axis and the upper virtual conical surface in a range 40-85°; and

a lower solid state lighting source lies on a lower virtual conical surface extending from a further point of said central axis coinciding with a lower edge of the light emission area under a second internal angle (β) between said central axis and the lower virtual conical surface in a range 40-85°;

wherein the distance between the point and the further point of said central axis is the given light emission area length (B).

2. The solid state lighting lamp of claim 1 , wherein the first internal angle (α) and the second internal angle (β) are individually selected from a range of 77-83°.

3. The solid state lighting lamp of claim 1 , wherein the first internal angle (α) and the second internal angle (β) are the same.

4. The solid state lighting lamp of claim 1 , wherein each linear array has a central point within 5% tolerance of the given light center length (A) from the connector.

5. The solid state lighting lamp of claim 1 , wherein each linear array has a length exceeding the given light emission area length by at least 30%.

6. The solid state lighting lamp of claim 1 , wherein the body is formed of separate optical modules, each carrying one of said linear arrays.

7. The solid state lighting lamp of claim 1 , wherein the body is made of a thermally conductive material and arranged to act as a heat sink for the solid state lighting sources.

8. The solid state lighting lamp of claim 7 , wherein the thermally conductive material is aluminium.

9. The solid state lighting lamp of claim 1 , wherein the body delimits an inner volume of the solid state lighting lamp, said inner volume comprising a driver circuit for the solid state lighting sources.

10. The solid state lighting lamp of claim 1 , wherein the body comprises a plurality of channels, each linear array of solid state lighting sources being mounted in one of said channels.

11. A luminaire for use with a gas discharge lamp having a given light center length (A) and a given light emission area length (B), the luminaire comprising:

a chamber delimited by an upper surface and a lower surface, and

the solid state lighting lamp of claim 1 as a replacement of the gas discharge lamp.

12. The luminaire of claim 11 , wherein the chamber is further delimited by a housing having a smooth central region centered around said light center.

13. The luminaire of claim 12 , wherein the smooth central region is transparent or translucent.

14. The luminaire of claim 12 , the housing further comprising:

an upper region in between the smooth central region and the upper surface, the upper region comprising a first plurality of prisms for shaping incident light of the solid state lighting lamp; and

a lower region in between the smooth central region and the lower surface, the lower region comprising a second plurality of prisms for shaping incident light of the solid state lighting lamp.

15. The luminaire of claim 11 , wherein at least one of the upper surface and the lower surface comprises a reflector.