TW201326687A - Lamp and method for changing light color thereof - Google Patents

Abstract

A lamp is provided. The lamp includes a light source, a light modulating film and a moving unit. The light source provides an initiate light beam. The light modulating film is selectively corresponding to the light source. The light modulating film includes a first area and a second area. When the first area is corresponding to the light source, the initiate light beam passes through the first area to be a first light beam. The first light beam has a first wavelength. When the second area is corresponding to the light source, the initiate light beam passes through the second area to be a second light beam. The second light beam has a second wavelength. The first wavelength differs from the second wavelength. The moving unit is connected to the light modulating film. The moving unit changes the position of the light modulating film relative to the light source.

Description

Lamp and its color temperature adjustment method

The present invention relates to a luminaire, and more particularly to a luminaire capable of providing light of different color temperatures.

In conventional lighting fixtures such as decoration or advertisements, depending on environmental changes or situational needs, the color temperature of the light is changed to enhance the situational atmosphere or attract attention. The design is to provide two different color temperature LED packages. The color temperature variation of the provided light causes the luminaire to switch between two different color temperature ray variations due to limited variation and high cost. Another conventional technique also has a luminaire that supplies light through a mixture of red, blue, and green monochromatic light-emitting diodes, and controls the brightness and color temperature of the luminaire through a circuit, thereby controlling the color temperature conversion in this way, and the cost is higher, and The color temperature changes are monotonous and cannot be adjusted or changed as needed.

In order to solve the problems of the prior art, the present invention provides a light fixture comprising: a light source, a light conversion film, and an actuation unit. The light source provides initial light; the light conversion film corresponds to the light source in an alternative manner, including the first block and the second block, wherein the initial light passes through the first block when the first block corresponds to the light source Forming a first ray by a block, the first ray having a first wavelength, and when the second block corresponds to the light source, the initial ray passes through the second block to form a second ray, the second ray having a second wavelength, the first wavelength being different from the second wavelength; the actuation unit is coupled to the light conversion film to adjust a relative position between the light conversion film and the light source.

As an alternative technical solution, the light conversion film comprises a phosphor powder or a dye.

As an optional technical solution, the light source includes a light emitting surface, and the light emitting surface is a curved surface, and the light conversion film corresponds to the light emitting surface.

As an optional technical solution, the light-emitting surface has a radius of curvature, and the width of the first block and the second block are both equal to the length of the radius of curvature.

As an optional technical solution, the colors in the first block are consistent, and the colors in the second block are consistent.

As an alternative technical solution, the color in the first block changes in a gradual manner, and the color in the second block changes in a gradual manner.

As an optional technical solution, the light source includes a light emitting surface, and the light emitting surface is a plane, and the light conversion film corresponds to the light emitting surface.

In an optional technical solution, the illuminating surface has a illuminating surface width, and the width of the first block and the second block are both equal to the illuminating surface width.

As an optional technical solution, the actuation unit includes a first actuation reel and a second actuation reel, one end of the light conversion film is fixed to the first actuation reel, and the other end of the optical conversion film is fixed to the first The second actuating reel, the first actuating reel and the second actuating reel roll the light conversion film such that the light conversion film corresponds to the light source in an alternative manner.

As an alternative technical solution, the actuating unit comprises at least one electric motor that drives the first actuating reel and the second actuating reel.

As an optional technical solution, the light source is a white light source, a red light source, a green light source or a blue light source.

According to another embodiment, the present invention provides a method for adjusting a color temperature of a lamp, comprising: (a) providing a light source that provides initial light; (b) providing a light conversion film, the light conversion film including a first block and a second a block; (c) providing an actuating unit connected to the light conversion film; (d) driving the actuating unit such that the first block corresponds to a light source, and the initial light passes through the first Forming a first ray with a first ray having a first wavelength; and (e) driving the actuation unit such that the second ray corresponds to a light source, and the initial ray passes through the second region The block forms a second light having a second wavelength that is different from the second wavelength.

As an optional technical solution, in step (d), the actuating unit moves the first block in a first direction, so that the first block corresponds to a light source, and in step (e), The moving unit moves the second block in the first direction, and the second block corresponds to the light source.

As an optional technical solution, in step (d), the actuating unit moves the first block in a first direction, and the second block corresponds to a light source, in step (e), The moving unit moves the second block in a second direction, and the second block corresponds to the light source, and the second direction is opposite to the first direction.

By applying the invention, since the color temperature of the light is controlled by the light conversion film, the light conversion film can be replaced at will and the specific color temperature light can be selected as needed. Moreover, compared with the prior art, the present invention can easily achieve different glare effects such as gradual change and rapid change, and thus can be widely applied to various lighting environments.

In order to facilitate a better understanding and recognition of the structural purpose and efficacy of the present invention, the drawings are described in detail below.

Referring to FIG. 1A, there is shown a lamp 1 of a first embodiment of the present invention, comprising a light source 10, a light conversion film 20, and an actuation unit 30. Light source 10 provides initial light. The light conversion film 20 corresponds to the light source 10 in an alternative manner. Referring to FIG. 1B, the light conversion film 20 includes a plurality of blocks (a first block 21, a second block 22, and the like). Referring to FIG. 1A, when the first block 21 corresponds to the light source 10, the initial light passes through the first block 21 to form a first light ray 11 having a first wavelength. Referring to FIG. 1C, when the second block 22 corresponds to the light source, the initial light passes through the second block 22 to form a second light ray 12 having a second wavelength, the first wavelength being different from the first wavelength The second wavelength (the color temperature is different). The actuating unit 30 is connected to the light conversion film 20 to adjust the relative position between the light conversion film 20 and the light source 10, thereby changing the color temperature of the light.

In FIGS. 1A and 1C, a plurality of blocks of the light conversion film 20 are separated from each other by a line segment to clearly show the positions of the respective blocks, which are for indication only, and are not physical segments.

The light conversion film 20 may include phosphor powder, a dye, or other material that changes the wavelength of light.

The actuation unit 30 includes a first actuation reel 31 and a second actuation reel 32. One end of the light conversion film 20 is fixed to the first actuation reel 31, and the other end of the optical conversion film 20 is fixed to the second The reel 32 is actuated, and the first actuation reel 31 and the second actuation reel 32 wind the light conversion film 20 such that the light conversion film 20 corresponds to the light source 10 in an alternative manner.

The actuation unit can include at least one electric motor for driving the first actuation reel and the second actuation reel. For example, in the embodiment of FIG. 1A, the actuation unit 30 includes an electric motor 33 that is electrically The motor 33 can be connected directly or through a gear or other transmission mechanism to connect the first actuating reel 31 and the second actuating reel 32, thereby rotating the first actuating reel 31 and the second actuating reel 32. The light conversion film 20 is scrolled so that the light conversion film 20 can be selected in a manner corresponding to the light source 10. In FIG. 1A, the connection between the electric motor 33 and the first actuating reel 31 and the second actuating reel 32 is presented in a schematic manner, which does not limit the electric motor and the first and second actuating reels. The way to connect.

Referring to FIG. 1A, in this embodiment, the light source 10 includes a light-emitting surface 13 which is a curved surface, and the light conversion film 20 corresponds to the light-emitting surface 13. The light exit surface 13 has a radius of curvature r. Referring to FIG. 1B, the widths w of the first block 21 and the second block 22 are both equal to the length of the radius of curvature r. In this embodiment, the colors in the first block are the same, and the colors in the second block are the same.

In the above embodiment, the light conversion film 20 may contact the light-emitting surface 13 of the light source 10 or correspond to the light-emitting surface 13 by means of a groove or a positioning roller.

In another embodiment, the color in the first block 21 changes in a gradual manner, and the color in the second block 22 changes in a gradual manner.

The light source 10 can be a white light source, a red light source, a green light source, or a blue light source.

Referring to Fig. 2A, there is shown a luminaire 2 of a second embodiment of the present invention, comprising a light source 10', a light conversion film 20', and an actuation unit 30. The main feature of the second embodiment is that the light source 10' is a flat-plate light source comprising a light-emitting surface 13' which is a flat surface, and the light-converting film 20' corresponds to the light-emitting surface 13'. Referring to FIG. 2A and FIG. 2B, the light-emitting surface 13 ′ has a light-emitting surface width L, and the light conversion film 20 ′ has a first block 21 ′ and a second block 22 ′, the first block 21 ′ and the first The width of the two blocks 22' is equal to the width L of the light exit surface.

Fig. 3 is a view showing the steps of the method for adjusting the color temperature of the lamp of the present invention. The method for adjusting the color temperature of the lamp of the present invention comprises the steps of: (a) providing a light source that provides an initial light (S1); and, (b) providing a light conversion film, the light conversion film including the first block and the first a second block (S2); then, (c) providing an actuating unit that connects the light conversion film (S3); and, (d) drives the actuating unit such that the first block corresponds to a light source, the initial light rays passing through the first block to form a first light, the first light having a first wavelength (S4); and (e) driving the actuating unit to make the second block Corresponding to the light source, the initial light passes through the second block to form a second light having a second wavelength, the first wavelength being different from the second wavelength (S5).

Referring to FIG. 1A, in this embodiment, in step (d) (S4), the actuating unit 30 moves the first block 21 toward a first direction α, so that the first block 21 corresponds to the light source. 10. Referring to FIG. 1C, in step (e) (S5), the actuating unit 30 moves the second block 21 toward the second direction -α, so that the second block 21 corresponds to the light source, the second direction -α is opposite to the first direction α.

Referring to FIG. 4, in another embodiment, in step (d) (S4), the actuating unit 30 moves the first block 21 toward a first direction α, so that the first block 21 corresponds to Light source 10. In the step (e) (S5), the actuating unit 30 also moves the second block 22 in the first direction α, so that the second block 22 corresponds to the light source 10.

By applying the invention, since the color temperature of the light is controlled by the light conversion film, the light conversion film can be replaced at will and the specific color temperature light can be selected as needed. Moreover, compared with the prior art, the present invention can easily achieve different glare effects such as gradual change and rapid change, and thus can be widely applied to various lighting environments.

Although the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

1, 2. . . Lamp

10, 10’. . . light source

11. . . First light

12. . . Second light

13, 13’. . . Glossy surface

20, 20’. . . Light conversion film

21, 21’. . . First block

22, 22’. . . Second block

30. . . Actuating unit

31. . . Consistent scroll

32. . . Second actuating reel

33. . . electric motor

1A is a view showing a lamp according to a first embodiment of the present invention, wherein a first block of the light conversion film corresponds to a light source;

1B is a view showing a plurality of blocks of the light conversion film of the first embodiment of the present invention;

1C is a lamp according to a first embodiment of the present invention, wherein a second block of the light conversion film corresponds to a light source;

2A is a view showing a lamp of a second embodiment of the present invention;

2B is a view showing a plurality of blocks of the light conversion film of the second embodiment of the present invention;

Figure 3 is a diagram showing the steps of the method for adjusting the color temperature of the lamp of the present invention;

Fig. 4 is a view showing a lamp according to another embodiment of the present invention.

1. . . Lamp

10. . . light source

11. . . First light

13. . . Glossy surface

20. . . Light conversion film

twenty one. . . First block

twenty two. . . Second block

30. . . Actuating unit

31. . . Consistent scroll

32. . . Second actuating reel

33. . . electric motor

Claims (14)

A luminaire comprising: a light source providing initial light; a light conversion film corresponding to the light source in an alternative manner, comprising a first block and a second block, wherein the initial portion corresponds to the light source, the initial The light passes through the first block to form a first light, the first light has a first wavelength, and when the second block corresponds to the light source, the initial light passes through the second block to form a second light. The second light has a second wavelength different from the second wavelength; and an actuating unit is coupled to the light conversion film to adjust a relative position between the light conversion film and the light source. The luminaire of claim 1, wherein the light conversion film comprises a phosphor or a dye. The luminaire of claim 1, wherein the light source comprises a light exiting surface, the light exiting surface is a curved surface, and the light converting film corresponds to the light emitting surface. The luminaire of claim 3, wherein the illuminating surface has a radius of curvature, and the width of the first block and the second block are both equal to the length of the radius of curvature. The luminaire of claim 1, wherein the colors in the first block are the same, and the colors in the second block are the same. The luminaire of claim 1, wherein the color in the first block changes in a gradual manner, and the color in the second block changes in a gradual manner. The luminaire of claim 1, wherein the light source comprises a light exiting surface, the light exiting surface is a plane, and the light conversion film corresponds to the light emitting surface. The luminaire of claim 7, wherein the illuminating surface has a illuminating surface width, and the width of the first block and the second block are equal to the illuminating surface width. The luminaire of claim 1, wherein the actuating unit comprises a first actuating reel and a second actuating reel, one end of the light conversion film being fixed to the first actuating reel, the light conversion film The other end is fixed to the second actuating reel, and the first actuating reel and the second actuating reel roll the light conversion film such that the light conversion film corresponds to the light source in an alternative manner. The luminaire of claim 9, wherein the actuating unit comprises at least one electric motor that drives the first actuating reel and the second actuating reel. The luminaire of claim 1, wherein the light source is a white light source, a red light source, a green light source or a blue light source. A method for adjusting a color temperature of a luminaire, comprising: (a) providing a light source that provides initial light; (b) providing a light conversion film, the light conversion film including a first block and a second block; (c) providing an actuation unit The actuation unit is coupled to the light conversion film; (d) driving the actuation unit such that the first block corresponds to a light source, and the initial light passes through the first block to form a first light. The first light has a first wavelength; and (e) driving the actuation unit such that the second block corresponds to the light source, and the initial light passes through the second block to form a second light, the second The light has a second wavelength that is different from the second wavelength. The method for adjusting the color temperature of the lamp according to claim 12, wherein in the step (d), the actuating unit moves the first block in a first direction, so that the first block corresponds to the light source. In the step (e), the actuating unit moves the second block toward the second direction, so that the second block corresponds to the light source, and the second direction is opposite to the first direction. The method for adjusting the color temperature of the lamp according to claim 12, wherein in the step (d), the actuating unit moves the first block in a first direction, so that the first block corresponds to the light source. In step (e), the actuating unit moves the second block in a first direction, and the second block corresponds to a light source.