Light-emitting device, illumination device, image display device, and indicator lamp for vehicle

A light-emitting device having at least one or more light emission colors having a correlated color temperature of 4000 K or lower, the light-emitting device comprising:

• a light-emitting element including a first luminescent material and a second luminescent material which emits visible light by irradiation with light from the first luminescent material,
• wherein the second luminescent material contains at least one or more phosphors having an emission peak in a wavelength region of 450 nm or more and less than 600 nm, and one or more other phosphors having an emission peak wavelength in a wavelength region of 600 nm or more and 700 nm or less,
• in at least one of the light emission colors having the correlated color temperature of 4000 K or lower, when an emission intensity at a wavelength λ1 where an emission intensity of an emission spectrum is maximum at 600 nm or more and 700 nm or less is set to A, and an emission intensity at 700 nm is set to C, C/A is 0.25 or less, and
• the one or more other phosphors having the emission peak wavelength in the wavelength region of 600 nm or more and 700 nm or less include at least a phosphor containing a crystal phase having a composition represented by the following formula [1]:
• RexMAaMBbMCcNdXe [1]
• wherein in formula [1], MA includes one or more elements selected from the group consisting of Sr, Ca, Ba, Na, K, Y, Gd, and La,
• MB includes one or more elements selected from the group consisting of Li, Mg, and Zn,
• MC includes one or more elements selected from the group consisting of Al, Si, Ga, In, and Sc,
• X includes one or more elements selected from the group consisting of F, Cl, Br, and I,
• Re includes one or more elements selected from the group consisting of Eu, Ce, Pr, Tb, and Dy, and
• a, b, c, d, e, and x respectively satisfy the following expressions:
• 0.7
• ≤
• a
• ≤
• 1.3
• 0.7
• ≤
• b
• ≤
• 1.3
• 2.4
• ≤
• c
• ≤
• 3.6
• 3.2
• ≤
• d
• ≤
• 4.8
• 0.
• ≤
• e
• ≤
• 0.2
• 0.
• <
• x
• ≤
• 0.2
• .