Abstract: An object of the present invention is to stably fix a light source board without using any screw. A backlight unit 12 according to the present invention includes an LED board 18 including an LED 17 as a light source, a chassis 14 that stores the LED board 18 and has an opening 14b through which light from the LED 17 exits, and a holding member 20 that extends in at least one direction along a plate surface of the LED board 18 and is fixed to the chassis 14 so as to hold the LED board 18 together with the chassis between the holding member 20 and the chassis 14.

Abstract: It is an object of the present invention to provide a light source unit enabling cost reduction. A light source unit of the present invention includes a plurality of LEDs 16, and an elongated LED board 17 having a plurality of arranging portions 18 on which each LED 16 is arranged, and a plurality of connecting portions 19 connecting the adjacent arranging portions 18. Each connecting portion 19 has a width smaller than a width of each arranging portion 18 in a short direction of the LED board 17.

Abstract: A backlight unit (49) of a display device (69) having a liquid crystal display panel (59) is provided with a chassis (41), a diffusion plate (43) supported by the chassis, and a light source which irradiates the diffusion plate with light. The light source is constructed by combining a plurality of mounting substrates (21) provided with an LED (22) which serves as the light-emitting element and a diffusion lens (24) for covering the LED. Connectors (25A) are mounted on matching edges of the plurality of mounting substrates to electrically connect the substrates. The connectors are placed so as not to interfere with the illumination light region in which the LED imparts brightness to the diffusion plate. In order to achieve this state of non-interference, a beveled part (26) is formed on the side of the connectors facing the LED.

Abstract: The backlight unit (49) of a display device (69) having a liquid crystal display panel (59) is provided with a chassis (41), a diffusion plate (43) supported by the chassis, and a light source for irradiating the diffusion plate with light. A reflective sheet (42) for reflecting light towards the diffusion plate is combined with a light-emitting module (MJ), which is a light source. An inclined surface (42a) such that the light emitted from the light-emitting module in the lateral direction is reflected toward the diffusion plate is formed on the peripheral edge of the reflective sheet. The inclined surface is subjected to a reflectance reduction treatment. The reflectance reduction treatment involves forming a plurality of small holes (46A) in the inclined surface, for example.

Abstract: The backlight unit (49) of a display device (69) having a liquid crystal display panel (59) is provided with a chassis (41), a diffusion plate (43) supported by the chassis, and a light source which irradiates the diffusion plate with light. The light source has a plurality of light-emitting modules (MJ) which include an LED (22) serving as a light-emitting element and a diffusion lens (24) that covers the LED. The light-emitting modules are arranged in a grid pattern on the chassis supporting the diffusion plate. Support pins (26) for supporting the diffusion plate are disposed at points on the chassis. The support pins are arranged on line segments connecting adjacent pairs of light-emitting modules.

Abstract: A backlight unit 12 includes a chassis 14, a plurality of cold cathode tubes 18, an optical member 16 and a plurality of support members 20. The chassis 14 has an opening on a light exit side. The cold cathode tubes 18 are light sources arranged in a parallel layout and housed in the chassis 14. The optical member 16 is arranged on the light exit side outer than the cold cathode tubes 18 so as to cover the opening of the chassis 14. The support members 20 are arranged in a parallel layout along a parallel arrangement direction of the cold cathode tubes 18. The support members 20 are formed such that support positions of the optical member 16 are relatively closer to the cold cathode tubes 18 around the center and relatively farter from the cold cathode tubes 18 near the edges. The cold cathode tubes 18 are arranged at relatively smaller intervals around the center and at relatively larger intervals near the edges.

Abstract: A lighting device having a reduced size. The lighting device has a support member (9) installed on an installation section (4c) of a backlight chassis (4), a power source substrate (6) placed behind the backlight chassis (4), and an insulation sheet (7) bonded to a bottom section (4a) of the backlight chassis (4). The installation section (4c) does not project rearward from the bottom section (4a) but projects forward. The support member (9) is installed so as not to project rearward from the bonding surface between the bottom section (4a) and the insulation sheet (7).

Abstract: A plurality of clipping portions which clip a plurality of lamps to be juxtaposed are provided on one face, and a mounting portion to be mounted on a supporting member by which the lamps are supported, and holding projecting portions for holding positions of the clipping portions with respect to the supporting member are provided, and two flexible portions which can bend in a direction in which a distance between the supporting sections is changed are provided between at least two clipping portions.

Abstract: An illuminating device (3) includes a plurality of cold cathode fluorescent tubes (discharge tubes) (9); inverter circuits (drive circuits) (17) that are connected to the plurality of cold cathode fluorescent tubes (9) and respectively light the plurality of cold cathode fluorescent tubes (9); a metal chassis (10) accommodating the plurality of cold cathode fluorescent tubes (9); and a reflecting sheet (11) formed of synthetic resin for reflecting light from the plurality of cold cathode fluorescent tubes (9). The chassis (10) is provided with a frame-shaped frame body (10a), and a plurality of rib members (10b) arranged respectively for the plurality of cold cathode fluorescent tubes (9) and attached to the frame body (10a) in parallel to the longitudinal direction of the cold cathode fluorescent tubes (9) on a side directly below the cold cathode fluorescent tubes (9).

Abstract: A liquid crystal display device (1) is provided with a lens sheet (10) that includes a low refractive index layer (11) having a low refractive index of a predetermined refractive index or lower and a high refractive index layer (12) having a refractive index higher than that of the low refractive index layer (11) and provided integrally with the low refractive index layer (11). Further, in the lens sheet (10), among a pair of polarizing plates (7, 8), the low refractive index layer (11) is attached to the polarizing plate (8) that is provided on an illumination device (3) side while being in intimate contact with the polarizing plate (8).

Abstract: In a lighting device 10, a discharge tube 15 includes a glass tube 34, an electrode 34a, an outer lead 35 and a ferrule 36. The electrode 34a is arranged inside the glass tube 34. The outer lead 35 makes electrical connection between the electrode 34a and an external device. The ferrule 36 has a drum shape so as to be fitted onto the glass tube 34 and makes electrical connection between the outer lead 35 and the terminal 14. The ferrule 36 includes a main body 37, a connecting part 40 and a holding part 50. The main body 37 is fitted onto the glass tube 34. The connecting part 40 extends from the main body 37 and is electrically connected to the outer lead 35. The holding part 50 is separately provided from the connecting part 40 and extends from the main body 37. The holding part 50 holds the outer lead 35 and a relative position of the ferrule 36 to the glass tube 34 is defined with the holding part 50.

Abstract: A lamp clip 18 includes a main body 27 mounted to a chassis 14 and a lamp gripping portion 28 having an open-end ring shape. The lamp gripping portion 28 is provided on a side of the main body 27 opposite from the chassis 14 so as to grip a tubular cold cathode tube 17 housed in the chassis 14. At least a part of an inner surface of the lamp gripping portion 28 opposing the cold cathode tube 17 is sloped surfaces 44 and the distances from the cold cathode tube 17 gradually decrease from a center side toward respective edge sides along a length direction of the cold cathode tube 17.

Abstract: An illumination device includes a chassis 14, a cold cathode tube 17 housed in the chassis 14, a diffusing plate 15a arranged at a position on the other side of the cold cathode tube 17 on the chassis 14 and a lamp clip 18. The lamp clip 18 includes a main body 27 mounted to the chassis 14 and a lamp gripping portion 28 that is provided on the main body 27 so as to grip the cold cathode tube 17. The chassis 14 has a recess 46 in which the main body 27 is inserted.

Abstract: A lamp clip 18 includes a main body 27 and a lamp gripping portion 28. The main body 27 is mounted to a chassis 14. The lamp gripping portion 28 has an open-end ring shape and is provided on an opposite side of the main body 27 from the chassis 14 so as to grip a tubular cold cathode tube 17 housed in the chassis 14. At least a part of the lamp gripping portion 28 is tapered such that a size that measures in a length direction of the cold cathode tube 17 gradually decreases toward the cold cathode tube 17.

Abstract: A lighting device 12 of the present invention includes a light source 17 having a conductive portion 19 at ends thereof, an optical sheet 15 arranged on a light output side with respect to the light source 17 and a cover 20 having light blocking effect and covering the end of the light source 17. The cover 20 includes a covering portion 20z for covering the light source and an optical sheet supporting portion 20a for supporting the optical sheet 15 on a surface located on the light output side with respect to the covering portion 20z. A projection 71 projects from the optical sheet supporting portion 20a toward the middle of the light source 17.

Abstract: A lighting device having a reduced size. The lighting device has a support member (9) installed on an installation section (4c) of a backlight chassis (4), a power source substrate (6) placed behind the backlight chassis (4), and an insulation sheet (7) bonded to a bottom section (4a) of the backlight chassis (4). The installation section (4c) does not project rearward from the bottom section (4a) but projects forward. The support member (9) is installed so as not to project rearward from the bonding surface between the bottom section (4a) and the insulation sheet (7).

Abstract: A lamp clip 18 includes a main body 27, a lamp gripping portion 28, a first mounting portion 30 and a second mounting portion 31. The main body 27 is mounted to a chassis 14 that houses a plurality of tubular cold cathode tubes 17. The lamp gripping portion 28 is provided on a surface of the main body 27 opposing the cold cathode tube 17 so as to grip the cold cathode tube 17. The first mounting portion 30 protrudes from the main body 27 so as to extend toward the chassis 14 and to be in a first mounting hole 32 formed in the chassis 14 so that a rim of the first mounting hole 32 is sandwiched between the first mounting portion 30 and the main body 27. The second mounting portion 31 protrudes from the main body 27 so as to extend toward the chassis 14 and to be inserted in a second mounting hole 33 formed in the chassis 14 so that a rim of the second mounting hole 33 is sandwiches between the second mounting portion 31 and the main body 27.

Abstract: A lighting device 12 of the present invention includes a light source 17, an external power source 21 arranged to supply drive power to the light source 17, and a relay connector 19 arranged to provide an electrical connection between the light source 17 and the external power source 21. The relay connector 19 includes a conductive resin layer 40 and an insulating resin layer 50 arranged on the periphery of the conductive resin layer 40. According to the construction, the conductive portion and the insulating portion of the relay connector 19 are both made of resin, and therefore can be formed by the same process, e.g., by two-shot molding. Further, the number of components can be reduced.

Abstract: The present invention provides a discharge tube for infrared communication interference suppression, a lighting device for liquid crystal display devices, and a liquid crystal display device, each capable of suppressing infrared communication interference. The present invention is a discharge tube for infrared communication interference suppression, including a pair of electrodes, wherein the discharge tube contains mercury, argon gas, and rare gas thereinside, the rare gas having an excitation energy lower than that of argon gas. Krypton gas is mentioned as the rare gas. The discharge tube may further contain neon gas thereinside.

Abstract: The present invention provides an infrared signal-receiving unit and an electronic device each capable of suppressing malfunction and communication failures of infrared communication equipment. The present invention is an infrared signal-receiving unit comprising a light guide and an infrared receiver that receives an infrared signal guided by the light guide, wherein the unit includes a multi-layer reflective film that reflects infrared at a wavelength band corresponding to that of disturbing light, and the infrared receiver receives the infrared signal that has passed through the multi-layer reflective film.