Abstract: A backlight unit 12 includes cold cathode tubes 18, a chassis 14, inverter boards 20, and relay connectors 21. The chassis 14 houses the cold cathode tubes 18. The inverter boards 20 are arranged on a side of the chassis 14 opposite from the cold cathode tubes 18. A predetermined amount of clearance C is provided between a reference plane BS and each inverter board 20. Each inverter board 20 is configured to supply drive power to the cold cathode tubes 18. The relay connectors 21 are mounted to the chassis 14 and configured to relay power supply from the inverter boards 20 to the cold cathode tubes 18. Each inverter board 20 is connected to the relay connectors 21 so as to be removable in one direction along a board surface of the inverter board 20. Blocking portions 35 and 36 are provided on the chassis 14 side. The blocking portions 35 and 36 project from the reference plane BS toward ends portions 20e to 20g of the inverter board 20.

Abstract: A backlight unit 12 includes cold cathode tubes 18, a chassis 14, inverter boards 20, and relay connectors 21. The chassis 14 houses the cold cathode tubes 18. The inverter boards 20 are arranged on a side of the chassis 14 opposite from the cold cathode tubes 18, and configured to supply a drive power to the cold cathode tubes. The relay connectors 21 are mounted to the chassis 14 and configured to relay power supply from the inverter boards 20 to the cold cathode tubes 18. Each inverter board 20 can be moved from a non-inserted position and an inserted position along a direction along the board surface of the inverter board 20. The inverter board 20 is separated from the relay connectors 21 at the non-inserted position and inserted in the relay connectors 21 at the inserted position. The backlight unit 12 further includes positioning structures for positioning the inverter board 20 relative to the chassis 14 at least one of directions along the board surface of the inverter board 20.

Abstract: A backlight unit 12 includes an LED 16 and light guide plates 18. The ELD includes a light emitting surface 16d. Each light guide plate includes a light entrance surface 18b and a light exit surface 18c. The light entrance surface 18b is provided to face the light emitting surface 16d and rays of light emitted from the light emitting surface 16d enter the light entrance surface 18b. The rays of light exit through the light exit surface 18c. The light guide plates are arranged parallel to each other along the light exit surface 18c. The light emitting surface 16d and the light entrance surface 18b are slanted to a surface perpendicular to the light exit surface 18c.

Abstract: A lighting device for a display device includes a plurality of linear light sources and a light source holding member arranged to hold the linear light sources. The light source holding member includes a first member and a second member. A sliding mechanism is provided between the first member and the second member, so as to allow parallel displacement of the first member and the second member relative to each other. The first member includes a first light source holder arranged to directly hold a first linear light source of the plurality of linear light sources. The second member includes a second light source holder arranged to directly hold a second linear light source other than the first linear light source.

Abstract: A lighting device for a display device includes a tubular light source and a relay connector used to supply power to the tubular light source. The tubular light source includes a glass tube and a ferrule having a cylindrical shape arranged to be fitted to the glass tube. The ferrule is arranged to electrically connect the tubular light source to the terminal. The ferrule includes an inner-diameter-changing elastic member that is elastically and radially deformable so that its inner diameter varies and adapts to the outer diameter of the glass tube.

Abstract: A backlight unit 12 includes LEDs 16 and alight guide plate 18. The LEDs 16 includes a light emitting surface 16a. The light guide plate 18 includes a light entrance surface 34 disposed so as to face the light emitting surface 16a and through which light from the light emitting surface 16a enters and a light exit surface 34 through which the light exits. The light emitting surface 16a and the light entrance surface 34 are formed to be curved and an AR coating process is performed on the light entrance surface 34 as an optical process. An AR coating layer 47 is formed on the light entrance surface 34. Accordingly, improved brightness is achieved.

Abstract: A backlight unit 12 includes LEDs 16, a first light guide plate 18A, a second light guide plate 18B and a fitting structure. Each of the first light guide plate 18A and the second light guide plate 18B has a light entrance surface 34 and a light exit surface 36. The light entrance surface 34 faces the corresponding LED 16 and light from the LED 16 enters through the light entrance surface 34. The light exit surface 36 through which light exits is arranged along an arrangement direction in which the LED 16 and the light entrance surface 34 are arranged. The light guide plates 18 are arranged in a parallel layout in the arrangement direction and partially overlap in a direction perpendicular to the light exit surface 36. A light exit portion 31 is an overlapping area OA that is provided on the first light guide plate 18A on a relatively light output side.

Abstract: A lighting device for a display device includes a light source, an optical member arranged on the light emitting side of the light source, and a support member arranged to support the optical member from the light source side. A recess portion arranged to accommodate the distal end portion of the support member is provided in the surface of the optical member that faces the light source, and the recess portion is arranged to overlap with the support member when seen in a planar view.

Abstract: A display device such that even if the display device is large size, opening and closing a cabinet of the display device is easy and maintenance of the inside of the display device is easy. A display device (1) includes a cabinet (4) including a front case (41) accommodating a liquid crystal panel (2) and a back case (42) accommodating a backlight unit (3), and the front case (41) and the back case (42) are fitted with each other such that periphery surfaces of the front case (41) cover periphery surfaces of the back case (42). The periphery surfaces of the front case (41) include mobile portions (411a, 412a, 413a, 414a) having hinge structures such that the mobile portions are capable of being rotated with respect to immobile portions (411b, 412b, 413b, 414b).

Abstract: A lighting unit 12 of the present invention includes a light source 17, a chassis that covers the light source 17 and a vibration absorber 70 provided in a mat-like form and arranged between the light source 17 and the chassis 14. The vibration absorber 70 is made of gelatinous material. With this configuration, the vibration absorber 70 blocks vibration propagation from the light source 17 to the chassis 14. As a result, a roaring sound is properly eliminated or reduced.

Abstract: There is provided a backlight device with which it is possible not only to prevent an assembly process from being complicated and the number of components from being increased, but also to connect a light source to a connector member satisfactorily and electrically. In this backlight device (20), a distance (W12) from the central axis (O1) of a cold cathode fluorescent lamp (23) to a connector terminal portion (240) is larger than a distance (W2) from the central axis of the cold cathode fluorescent lamp to an end portion of a contact portion (23d) of a cap portion (23a) in an F direction but is smaller than a distance (L2) from the central axis of the cold cathode fluorescent lamp to an end portion of the contact portion of the cap portion in an E direction.

Abstract: A display device 1 including a cabinet 4 that includes a front case 41 accommodating a liquid crystal panel 2 and a back case 42 accommodating a backlight unit 3, a hinge 5 that is attached on one lateral side of the cabinet 4 and is arranged to connect the front case 41 and the back case 42, an opening 7 that is formed on the other lateral side of the cabinet 4, and a movable supporting rod 6 that is attached on the lateral side of the cabinet 4 where the opening 7 is provided and is arranged to support the front case 41 when the front case 41 turns to open in a horizontal direction.

Abstract: The present invention provides a backlight device that can ensure the margin for design of the placement of a circuit board by simplifying the configuration of a lighting circuit of a lamp and reducing the size of the circuit board on which circuit components are mounted, and a display device using the backlight device. The backlight device includes a lamp (20) and a lighting circuit (21) that generates a lighting drive voltage to light and drive the lamp (20). The lighting circuit (21) includes the following: a direct-current power supply circuit (33) that generates a direct-current voltage from an input voltage; an inverter drive circuit (43) that converts the direct-current voltage output from the direct-current power supply circuit (33) into a high frequency voltage; and a booster portion (T2) that boosts the high frequency voltage output from the inverter drive circuit (43) to a lighting drive voltage of the lamp (20).

Abstract: An optical member 16 capable of light transmission and having a sheet-shape is installed in a chassis 13 of a backlight device 10 around an opening of the chassis 13. A cold cathode tube 15 capable of emitting light and having a substantially circle cross-section is installed behind the optical member 16 inside the chassis 13. A reflecting sheet 14 that reflects light emitted from the cold cathode tube 15 is installed behind the cold cathode tube 15 inside the chassis 13. The reflecting sheet 14 has a concave portion that surrounds the cold cathode tube 15 from the rear. The reflecting sheet 14 has an arch surface 26 at least in an area that faces the cold cathode tube 15 in a direction perpendicular to the surface of the optical member 16. The arch surface 26 is formed in a concentric manner as the cold cathode tube 15.

Abstract: A lighting device for a display device includes a light source and a chassis arranged to cover the light source. The chassis includes a base member made of resin material, and further includes a metallic skeleton frame provided on the base member. Thus, the lighting device for a display device having a simple construction capable of preventing or suppressing beat tones generated on a lamp housing member is provided without increasing the thickness of the device.

Abstract: A lighting device 12 for a display device, according to the present invention, includes a light source 17 and a chassis 14 arranged to cover the light source 17. The chassis 14 is formed of a plate-like member 53 having a reticulated structure 55. Thus, the lighting device for a display device, capable of preventing or suppressing beat tones generated on a lamp housing member, is provided without increasing the thickness of the device and with a simple structure.

Abstract: A lighting device for a display device includes a light source and a chassis arranged to cover the light source. The chassis includes an opening section located directly below a portion of or all of the light source. Thus, the lighting device for a display device, having a simple construction capable of preventing or suppressing beat tones generated on a lamp housing member, is provided without increasing the thickness of the device.

Abstract: A lighting device for a display device includes a light source and a chassis arranged to cover the light source. Further included is an inverter circuit board that is mounted to the chassis and includes an inverter circuit arranged to supply drive voltage to the light source. The chassis includes an opening section located directly below a portion of or all of the inverter circuit board. Thus, the lighting device for a display device, capable of preventing or suppressing beat tones generated on a lamp housing member, is provided without increasing the thickness of the device and with a simple structure.