Color display device, vehicle interior/exterior member, lamp for panel light, signboard for display and vehicle
A color display device (D) is provided, including a colored light-transmitting base material ( 10 ), a light-blocking base material, and a light source unit ( 30 ) that has at least a part located between the colored light-transmitting base material ( 10 ) and the light-blocking base material ( 20 ), in which the colored light-transmitting base material ( 10 ) has a total light transmittance of 18% or less, and in which the light source unit ( 30 ) is disposed such that emission light transmits through the colored light-transmitting base material ( 10 ), the color display device having excellent designability and high luminance.
1. A color display device, comprising:
a colored light-transmitting base material;
a light-blocking base material; and
a light source that is located between the colored light-transmitting base material and the light-blocking base material;
wherein the colored light-transmitting base material has a total light transmittance of 18% or less;
wherein the light source is disposed such that emission light transmits through the colored light-transmitting base material;
wherein the light source includes a light-emitting diode light source; and
wherein the light-emitting diode light source is a white light-emitting diode light source or a red light-emitting diode light source, and wherein the colored light-transmitting base material satisfies the following formula (1):
T 600 ≤60% and 60%< T 675 (1)
wherein, in formula (1), T 600 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 600 nm, and T 675 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 675 nm.
2. The color display device according to claim 1 , wherein the light source is only partly located between the colored light-transmitting base material and the light-blocking base material.
3. The color display device according to claim 1 , wherein the colored light-transmitting base material includes a display that displays predetermined information.
4. The color display device according to claim 3 , wherein the display includes a light-emitting mechanism that is formed in at least a partial area of a main surface of the colored light-transmitting base material on a side opposite to the light source, and wherein the light-emitting mechanism discharges the emission light from the light source so that the predetermined information is displayed on the display.
5. The color display device according to claim 1 , wherein the light source includes a planar light source.
6. The color display device according to claim 1 , wherein the light-emitting diode light source is formed on a black circuit board.
7. The color display device according to claim 1 , further comprising a light-diffusing member, wherein the light-diffusing member is located between the light source and the colored light-transmitting base material.
8. The color display device according to claim 1 , further comprising a light-transmitting member containing a black colorant, wherein the light-transmitting member containing the black colorant is located between the light source and the colored light-transmitting base material.
9. The color display device according to claim 1 , wherein the colored light-transmitting base material contains a transparent resin and at least one type of colorant selected from the group consisting of a dye and a pigment.
10. A vehicle interior or exterior member, an illumination light lamp, or a display signboard comprising the color display device according to claim 1 .
11. A vehicle comprising the vehicle interior or exterior member according to claim 6 .
12. A color display device, comprising:
a colored light-transmitting base material;
a light-blocking base material; and
a light source that is located between the colored light-transmitting base material and the light-blocking base material;
wherein the colored light-transmitting base material has a total light transmittance of 18% or less;
wherein the light source is disposed such that emission light transmits through the colored light-transmitting base material;
wherein the light source includes a light-emitting diode light source; and
wherein the light-emitting diode light source is a white light-emitting diode light source or a blue light-emitting diode light source, and wherein the colored light-transmitting base material has a peak of a light transmittance in a range of a wavelength which is 400 nm or more and less than 475 nm, and satisfies at least one of the following formulas (2) and (3):
T 400/475 ≥5% (2)
T 675 ≤60% and 60%≤ T 750 (3)
wherein, in formula (2), T 400/475 is a maximum value of the light transmittance obtained through conversion into an optical path length of 2 mm in a range of the wavelength which is 400 nm or more and less than 475 nm, and
wherein, in formula (3), T 675 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 675 nm and T 750 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 750 nm.
13. The color display device according to claim 12 , wherein the light source is only partly located between the colored light-transmitting base material and the light-blocking base material.
14. The color display device according to claim 12 , wherein the colored light-transmitting base material includes a display that displays predetermined information.
15. The color display device according to claim 14 , wherein the display includes a light-emitting mechanism that is formed in at least a partial area of a main surface of the colored light-transmitting base material on a side opposite to the light source, and wherein the light-emitting mechanism discharges the emission light from the light source so that the predetermined information is displayed on the display.
16. The color display device according to claim 12 , wherein the light source includes a planar light source.
17. The color display device according to claim 12 , wherein the light-emitting diode light source is formed on a black circuit board.
18. The color display device according to claim 12 , further comprising a light-diffusing member, wherein the light-diffusing member is located between the light source and the colored light-transmitting base material.
19. The color display device according to claim 12 , further comprising a light-transmitting member containing a black colorant, wherein the light-transmitting member containing the black colorant is located between the light source and the colored light-transmitting base material.
20. The color display device according to claim 12 , wherein the colored light-transmitting base material contains a transparent resin and at least one type of colorant selected from the group consisting of a dye and a pigment.
21. A vehicle interior or exterior member, an illumination light lamp, or a display signboard comprising the color display device according to claim 12 .
22. A vehicle comprising the vehicle interior or exterior member according to claim 21 .
23. A color display device, comprising:
a colored light-transmitting base material;
a light-blocking base material; and
a light source that is located between the colored light-transmitting base material and the light-blocking base material;
wherein the colored light-transmitting base material has a total light transmittance of 18% or less;
wherein the light source is disposed such that emission light transmits through the colored light-transmitting base material;
wherein the light source includes a light-emitting diode light source; and
wherein the light-emitting diode light source is a white light-emitting diode light source or a green light-emitting diode light source, and wherein the colored light-transmitting base material has a peak of a light transmittance in a range of a wavelength which is 475 nm or more and less than 600 nm, and satisfies the following formula (4):
T 475/600 ≥10% (4)
wherein, in formula (4), T 475/600 is a maximum value of the light transmittance obtained through conversion into an optical path length of 2 mm in a range of the wavelength which is 475 nm or more and less than 600 nm.
24. The color display device according to claim 23 , wherein the light source is only partly located between the colored light-transmitting base material and the light-blocking base material.
25. The color display device according to claim 23 , wherein the colored light-transmitting base material includes a display that displays predetermined information.
26. The color display device according to claim 25 , wherein the display includes a light-emitting mechanism that is formed in at least a partial area of a main surface of the colored light-transmitting base material on a side opposite to the light source, and wherein the light-emitting mechanism discharges the emission light from the light source so that the predetermined information is displayed on the display.
27. The color display device according to claim 23 , wherein the light source includes a planar light source.
28. The color display device according to claim 23 , wherein the light-emitting diode light source is formed on a black circuit board.
29. The color display device according to claim 23 , further comprising a light-diffusing member, wherein the light-diffusing member is located between the light source and the colored light-transmitting base material.
30. The color display device according to claim 23 , further comprising a light-transmitting member containing a black colorant, wherein the light-transmitting member containing the black colorant is located between the light source and the colored light-transmitting base material.
31. The color display device according to claim 23 , wherein the colored light-transmitting base material contains a transparent resin and at least one type of colorant selected from the group consisting of a dye and a pigment.
32. A vehicle interior or exterior member, an illumination light lamp, or a display signboard comprising the color display device according to claim 23 .
33. A vehicle comprising the vehicle interior or exterior member according to claim 32 .
34. A color display device, comprising:
a colored light-transmitting base material;
a light-blocking base material; and
a light source that is located between the colored light-transmitting base material and the light-blocking base material;
wherein the colored light-transmitting base material has a total light transmittance of 18% or less;
wherein the light source is disposed such that emission light transmits through the colored light-transmitting base material;
wherein the colored light-transmitting base material contains a transparent resin, and two or more types of dyes having different wavelengths each indicating a maximum value of absorbance in a range of a wavelength which is 380 nm or more and 880 nm or less, and wherein, for a combination of the two or more types of dyes, the wavelength indicating the maximum value of the absorbance is in a range of 450 nm or more and less than 700 nm, and wherein the two or more types of dyes satisfy the following formulas (1-1) and (1-2):
λ( i+ 1)−λ( i )<180 (1-1)
880−λ( n )≥200 (1-2)
wherein, in formulas (1-1) and (1-2), λ(i) is a wavelength (unit: nm) representing a maximum value of absorbance of a dye (i), which is one of the dyes, in a range of a wavelength which is 450 nm or more and 850 nm or less, i is an integer which is 1 or more and (n−1) or less, n is an integer which is 2 or more and indicates the number of types of the dyes contained in the colored light-transmitting base material, and λ(1)<λ(2)< . . . <λ(n).
35. The color display device according to claim 34 , wherein the light source is only partly located between the colored light-transmitting base material and the light-blocking base material.
36. The color display device according to claim 34 , wherein the colored light-transmitting base material includes a display that displays predetermined information.
37. The color display device according to claim 36 , wherein the display includes a light-emitting mechanism that is formed in at least a partial area of a main surface of the colored light-transmitting base material on a side opposite to the light source, and wherein the light-emitting mechanism discharges the emission light from the light source so that the predetermined information is displayed on the display.
38. The color display device according to claim 34 , wherein the light source includes a planar light source.
39. The color display device according to claim 34 , wherein the light source includes a light-emitting diode light source.
40. The color display device according to claim 39 , wherein the light-emitting diode light source is formed on a black circuit board.
41. The color display device according to claim 39 , wherein the light-emitting diode light source is a white light-emitting diode light source or a red light-emitting diode light source, and wherein the colored light-transmitting base material satisfies the following formula (1):
T 600 ≤60% and 60%< T 675 (1)
wherein, in formula (1), T 600 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 600 nm, and T 675 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 675 nm.
42. The color display device according to claim 39 , wherein the light-emitting diode light source is a white light-emitting diode light source or a blue light-emitting diode light source, and wherein the colored light-transmitting base material has a peak of a light transmittance in a range of a wavelength which is 400 nm or more and less than 475 nm, and satisfies at least one of the following formulas (2) and (3):
T 400/475 ≥5% (2)
T 675 ≤60% and 60%≤ T 750 (3)
wherein, in formula (2), T 400/475 is a maximum value of the light transmittance obtained through conversion into an optical path length of 2 mm in a range of the wavelength which is 400 nm or more and less than 475 nm, and
wherein, in formula (3), T 675 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 675 nm and T 750 is a light transmittance obtained through conversion into an optical path length of 2 mm at a wavelength of 750 nm.
43. The color display device according to claim 39 , wherein the light-emitting diode light source is a white light-emitting diode light source or a green light-emitting diode light source, and wherein the colored light-transmitting base material has a peak of a light transmittance in a range of a wavelength which is 475 nm or more and less than 600 nm, and satisfies the following formula (4):
T 475/600 ≥10% (4)
wherein, in formula (4), T 475/600 is a maximum value of the light transmittance obtained through conversion into an optical path length of 2 mm in a range of the wavelength which is 475 nm or more and less than 600 nm.
44. The color display device according to claim 34 , further comprising a light-diffusing member, wherein the light-diffusing member is located between the light source and the colored light-transmitting base material.
45. A vehicle interior or exterior member, an illumination light lamp, or a display signboard comprising the color display device according to claim 34 .
46. A vehicle comprising the vehicle interior or exterior member according to claim 45 .