1. An LED light source emitting white light, the light source comprising:
a transparent bulb;
at least one first LED emitting light in a first spectrum comprising near UV spectrum;
at least one second LED for emitting light in a second spectrum different from the first spectrum,
at least one controller coupled to the at least one first LED and the at least one second LED and configured to selectively and independently control intensity of the light emitted thereby so as to controllably vary one or more attributes of total light generated by the light source, and
a luminescent layer disposed on the surface of the bulb and for being irradiated by the at least one first LED emitting and the at least one second LED, the luminescent layer comprises a red emitting luminescent material, wherein the at least one first LED, the at least one second LED, the at least one controller and the luminescent layer are constrained to implement a red shift of said white light when the light source is dimmed.
2. The LED light source according to claim 1, wherein the bulb is at least partly covered with a reflective coating.
3. The LED light source according to claim 1, wherein the bulb (40) has the GLS-like shape or a conical shape.
4. The LED light source according to claim 1, wherein the at least one first LED emitting and the at least one second LED are mounted on a heat sink.
5. The LED light source according to claim 1, wherein the near UV spectrum is a spectrum that has an emission peak in the range of about 370 nm to 400 nm.
6. The LED light source according to claim 1, wherein the second LED is a blue emitting LED with an emission peak in the range of about 400 nm to 480 nm, or a green emitting LED with an emission peak in the range of about 520 to 560 nm.
7. The LED light source according to claim 1, wherein the second LED is a white-emitting phosphor-converted LED or a green-emitting phosphor-converted LED.
8. The LED light source according to claim 1, wherein the luminescent layer is configured to absorb and convert light with the emission spectrum of one of the at least one first LED and the at least one second LED.
9. The LED light source according to claim 1, wherein the red emitting luminescent material comprises a composition in accordance to the general formulas (Sr1-x-yCaxBay)2-zSi5N8:Euz (0\u2266x\u22661, 0\u2266y\u22661, 0.1\u2266z\u22662), (Sr1-xCax)S:Eu (0\u2266x\u22661), (Sr1-x-yCaxBay)3-zSi2N2O4:Euz (0\u2266x\u22661, 0\u2266y\u22661, 0.1\u2266z\u22663), CaAlSiN3:Eu, MLn1-z (Mo1-xWx)2O8:Euz (with M=Li, Na, K, Rb, Cs and Ln=Y, La, Ga and 0\u2266x\u22661, 0.1\u2266z\u22661), Ln2-z(Mo1-xWx)2O9:Euz (with Ln=La, Gd, Lu and 0\u2266x\u22661, 0.2\u2266z\u22662), or Ln2-z(Mo1-xWx)3O12:Euz (with Ln=La, Gd, Lu and 0\u2266x\u22661, 0.2\u2266z\u22662).
10. An LED light source emitting white light, the light source comprising:
a transparent bulb;
at least one first LED emitting light in a first spectrum;
at least one second LED for emitting light in a second spectrum different from the first spectrum,
at least one controller coupled to the at least one first LED and the at least one second LED and configured to selectively and independently control intensity of the light emitted thereby so as to controllably vary one or more attributes of total light generated by the light source, and
a luminescent layer disposed on the surface of the bulb and for being irradiated by the at least one first LED emitting and the at least one second LED, the luminescent layer comprises a green-to-yellow-emitting luminescent material, wherein the at least one first LED, the at least one second LED and the luminescent layer are constrained to implement a red shift of said white light when the light source is dimmed.
11. The LED light source according to claim 10, wherein the luminescent material comprises a composition in accordance to the general formulas (Sr1-x-yCaxBay)2SiO4:Eu (0\u2266x\u22661, 0\u2266y\u22661), (Sr1-xCax)Si2N2O2:Eu (0\u2266x\u22661), SrLi2SiO4:Eu, (Y1-x-y-zLuxGdyTbz)3(Al1-aGaa)5O12:Ce (0\u2266a\u22661, 0\u2266x\u22661, 0\u2266y\u22661, 0\u2266z\u22661), Y3Al5-xSixO12-xNx:Ce, or CaAlSiN3:Ce.
12. The LED light source according to claim 10, wherein the bulb is at least partly covered with a reflective coating.
13. The LED light source according to claim 10, wherein the bulb (40) has the GLS-like shape or a conical shape.
14. The LED light source according to claim 10, wherein the at least one first LED has an emission peak in the range of about 370 nm to 400 nm.
15. The LED light source according to claim 10, wherein the second LED is a blue emitting LED with an emission peak in the range of about 400 nm to 480 nm, or a green emitting LED with an emission peak in the range of about 520 to 560 nm.
16. The LED light source according to claim 10, wherein the luminescent layer is configured to absorb and convert light with the emission spectrum of one of the at least one first LED and the at least one second LED.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A carriage for sliding doors and windows; said doors and windows (2) comprising:
a fixed frame (3), at least one sash (4) that slides relative to the fixed frame (3) horizontally on at least one carriage (7) between an open position and a closed position, and a handle (9) mounted on the sash (4) and designed to control the carriage (7); the carriage (7) being provided with a supporting frame (11), mobile on wheels, and with a connecting member (13) interposed between the supporting frame (11) and a bottom sash (4) rail (8); the connecting member (13) being movably constrained to the supporting frame (11) to enable the sash (4) to be lifted and lowered relative to the supporting frame (11); the carriage (7) also comprising a drive system (25) whereby the handle (9) controls the lifting and lowering of the sash (4) relative to the supporting frame (11) of the carriage (7); the carriage (7) being characterized in that it further comprises elastic means (44) interposed between the supporting frame (11) and the connecting member (13).
2. The carriage according to claim 1, characterized in that the elastic means (44) are in the form of a helical spring (44).
3. The carriage according to claim 2, characterized in that the connecting member (13) comprises an upper plate (14) coupled to the bottom rail (8) of the sash (4), and a bottom protrusion (16) extending from a middle portion of the plate (14) and movably constrained to a central portion of the supporting frame (11); the helical spring (44) being interposed between the protrusion (16) and the supporting frame (11).
4. The carriage according to claim 3, characterized in that the protrusion (16) has a cylindrical hole (46) which accommodates one longitudinal end (45) of the spring (44); the supporting frame (11) comprising a pin (48) that fits into the other longitudinal end (47) of the spring (44).
5. The carriage according to claim 4, characterized in that the protrusion (16) comprises an elongated slot (17) engaged by a central pin (18) of the supporting frame (11).
6. The carriage according to claim 5, characterized in that the cylindrical hole (46) is made in the protrusion (16) between the plate (14) and the slot (17) and extends longitudinally along a central axis (S) parallel to the direction in which the slot (17) extends.
7. The carriage according to claim 5, characterized in that the slot (17) is inclined in such a way that its lower end is located in front of its upper end in the closing direction (C) of the sash (4).
8. The carriage according to claim 3, characterized in that the supporting frame (11) is in the form of a partially open, substantially parallelepiped shaped box and, more specifically, has a bottom wall (21) opposite an upper opening (22), two side walls (20) extending transversally from the bottom wall (21), and two further walls (23) at its front and back ends, extending transversally from both the bottom wall (21) an the side walls (22); the protrusion (16) being partially contained within the supporting frame (11) through the upper opening (22).
9. A sliding door or window of the lift and slide type comprising a carriage (7) according to claim 1.