US 12,264,799 B2
Display device
Shunsuke Aoyama, Kiyosu (JP); Koji Okumura, Kiyosu (JP); Koji Fukagawa, Kiyosu (JP); Hiroaki Ando, Kiyosu (JP); and Takeshi Yagami, Kiyosu (JP)
Assigned to TOYODA GOSEI CO., LTD., Aichi-pref. (JP)
Filed by TOYODA GOSEI CO., LTD., Kiyosu (JP)
Filed on Jun. 28, 2024, as Appl. No. 18/758,468.
Claims priority of application No. 2023-119178 (JP), filed on Jul. 21, 2023.
Prior Publication US 2025/0027628 A1, Jan. 23, 2025
Int. Cl. F21S 41/40 (2018.01); F21S 41/13 (2018.01); F21W 104/00 (2018.01); F21Y 113/00 (2016.01)
CPC F21S 41/40 (2018.01) [F21S 41/13 (2018.01); F21W 2104/00 (2018.01); F21Y 2113/30 (2023.05)] 3 Claims
OG exemplary drawing
 
1. A display device, comprising:
a light-transmitting portion arranged on an electromagnetic-wave-transmissive panel;
a display light source arranged at an inner side of the light-transmitting portion, the display light source being configured to emit light to the light-transmitting portion to illuminate and display the light-transmitting portion; and
a housing including an opening, the housing accommodating the display light source, the light-transmitting portion being arranged in the opening, wherein
the light-transmitting portion includes
a transparent plastic base member,
a first color exhibiting layer containing dye or pigment, and
a second color exhibiting layer containing a filler made of a cold mirror thin film reflecting visible light and transmitting infrared light,
the first color exhibiting layer has a transmittance of 20% or more for light having a specific wavelength, and
the second color exhibiting layer has a reflectance of 80% or less for light having a wavelength not absorbed by the dye or the pigment of the first color exhibiting layer and a transmittance of 60% or more for light having a wavelength absorbed by the dye or the pigment of the first color exhibiting layer.