Illumination device and display unit

A display unit provided with a liquid crystal panel and an illumination device provided on a back surface side of the liquid crystal panel, the illumination device comprising:

• a light source;
• an optical component;
• a holding member holding the light source and the optical component with respect to one another, wherein the holding member is divided into a plurality of divided holding members, adjacent ones of the plurality of divided holding members having end portions for coupling adjacent divided holding members to one another, an end portion having at least one of a projection and a step part by which the end portion couples to the end portion of an adjacent divided holding member;
• and
• a variable pressing member variably pressing the optical component against the holding member.

A display device comprising:

• at least one light source configured to emit light of a first wavelength range;
• a light guide plate having a light incident surface that faces the at least one light source, a light emission surface orthogonal to the light incident surface, and a bottom surface parallel to the light emission surface, the bottom surface having a pattern that irregularly reflects light toward the light emission surface;
• a heat dissipating member disposed on a backside of the at least one light source;
• a luminescent body comprising wavelength conversion material provided in a resin and positioned to receive the light of the first wavelength range, the luminescent body is positioned such that the at least one light source is between the luminescent body and the heat dissipating member;
• a reflective member having a planar surface disposed to face the bottom surface, the reflective member having light reflecting and light scattering functions;
• a holding member being divided into at least two divided holding members and the holding member having at least one surface section;
• and
• an elastic component that causes the at least one surface section to engage the at least one light source and the luminescent body;
• wherein the luminescent body is configured such that a portion of the light of the first wavelength range is converted to light of at least a second wavelength range and is configured to transmit light of the first wavelength range through the luminescent body without colliding with the wavelength conversion material, the light of the first wavelength range that transmits through the luminescent body without colliding with the wavelength conversion material includes light incident at oblique angles.

A display device comprising:

• a liquid crystal panel having a backside;
• light sources configured to emit light of a first wavelength range;
• light source substrates on which the light sources are mounted perpendicular to the backside of the liquid crystal panel;
• a heat dissipating member disposed on a backside of the light source substrates;
• a luminescent body comprising wavelength conversion material provided in a resin and positioned to receive the light of the first wavelength range, the luminescent body is positioned such that the light sources are between the luminescent body and the light source substrates;
• a reflective member having a planar surface disposed to face the backside, the reflective member having light reflecting and light scattering functions;
• a holding member being divided into at least two divided holding members and the holding member having at least one surface section;
• and
• an elastic component that causes the at least one surface section to engage at least one of the light sources and the luminescent body;
• wherein the luminescent body is configured such that a portion of the light of the first wavelength range is converted to light of at least a second wavelength range and is configured to transmit light of the first wavelength range through the luminescent body without colliding with the wavelength conversion material, the light of the first wavelength range that transmits through the luminescent body without colliding with the wavelength conversion material includes light incident at oblique angles, and
• wherein the luminescent body is disposed between at least one of the light sources and the backside of the liquid crystal panel.

A display device comprising:

• a liquid crystal panel having a backside;
• light sources configured to emit light of a first wavelength range;
• a heat dissipating member on which the light sources are disposed thereover;
• a luminescent body comprising wavelength conversion material provided in a resin and positioned to receive the light of the first wavelength range, the luminescent body is positioned such that the light sources are between the luminescent body and light source substrates;
• a reflective member having a planar surface disposed to face the backside, the reflective member having light reflecting and light scattering functions;
• a holding member being divided into at least two divided holding members and the holding member having at least one surface section;
• and
• an elastic component that causes the at least one surface section to engage the at least one light source and the luminescent body;
• wherein the luminescent body is configured such that a portion of the light of the first wavelength range is converted to light of at least a second wavelength range and is configured to transmit light of the first wavelength range through the luminescent body without colliding with the wavelength conversion material, the light of the first wavelength range that transmits through the luminescent body without colliding with the wavelength conversion material includes light incident at oblique angles, and
• wherein the luminescent body is disposed between the light sources and the backside of the liquid crystal panel.

A display device comprising:

• a liquid crystal panel having a backside;
• light sources configured to emit light of a first wavelength range;
• a light guide plate having a light incident surface that faces the light sources, a light emission surface orthogonal to the light incident surface and facing the backside of the liquid crystal panel, and a bottom surface parallel to the light emission surface, the bottom surface having a pattern that irregularly reflects light toward the light emission surface;
• a heat dissipating member on which the light sources are disposed thereover;
• a luminescent body comprising wavelength conversion material provided in a resin and positioned to receive the light of the first wavelength range, the luminescent body is positioned such that the light sources are between the luminescent body and light source substrates that the light sources are mounted thereon;
• a reflective member having a planar surface disposed to face the bottom surface, the reflective member having light reflecting and light scattering functions;
• a holding member being divided into at least two divided holding members and the holding member having at least one surface section;
• and
• an elastic component that causes the at least one surface section to engage the at least one light source and the luminescent body;
• wherein the luminescent body is disposed between the light sources and the backside of the liquid crystal panel,
• wherein the luminescent body is configured such that a portion of the light of the first wavelength range is converted to light of at least a second wavelength range and is configured to transmit light of the first wavelength range through the luminescent body without colliding with the wavelength conversion material, the light of the first wavelength range that transmits through the luminescent body without colliding with the wavelength conversion material includes light incident at oblique angles, and
• wherein the heat dissipating member is disposed to have a portion perpendicular to the liquid crystal panel and is bent to have a portion parallel with the liquid crystal panel.