公开(公告)号：JPH07146411A

公开(公告)日：1995-06-06

申请号：JP31916693

申请日：1993-11-24

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA

IPC: G02B6/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To manufacture a light conductive plate having a scattering and reflecting part in one surface efficiently by providing grooves in one surface of light conductive material to form plural light conductive plate sections, and then providing scattering and reflecting parts in one surface inside the conductive plate sections at once. CONSTITUTION:Grooves 2 are provided in one surface of light conductive material 1 to form plural light conductive plate sections. The grooves 2 are provided for the purpose of parting the light conductive material 1 easily after forming scattering and reflecting parts 3. The scattering and reflecting parts 3 are then formed in one surface of the plural light conductive plate sections at once. The scattering and reflecting parts 3 are provided as gradation patterns comprising dots and strips for changing surface ratio properly in accordance with brightness change from a light beam source, so light incidental from the light beam source into the light conductive plate is distributed uniformly to be scattered and reflected to be radiated from a light emission surface of the light conductive plate. Finally, the light conductive material 1 is parted into each light conductive plate section, thereby plural light conductive plates having the scattering and reflecting parts 3 in one surface can be provided.

公开(公告)号：JPH0784259A

公开(公告)日：1995-03-31

申请号：JP25492793

申请日：1993-09-16

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA ,  KIRIMURA HIROSHI

IPC: F21V8/00 ,  G02B6/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To provide an efficient and high-luminance surface light emission device. CONSTITUTION:A linear light source 2 is arranged on one side surf ace of a transparent light transmission plate 1. Plural grooves 4 constituted of two inclined surf aces are formed on the back surface of the plate 1 in parallel with the light source 2. The angles of the inclined surfaces 31 of the respective grooves 4 on the light source 2 side are set to be

公开(公告)号：JPH0736036A

公开(公告)日：1995-02-07

申请号：JP19917293

申请日：1993-07-15

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA

IPC: F21V8/00 ,  G02B6/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To obtain a U-shaped linear light source type surface light emission device whose luminance is high and whose power consumption is low by using a U-shaped linear light source as a linear light source and arranging a side reflection plate on one side surface of a light transmission plate where the U-shaped linear light source is not arranged. CONSTITUTION:The U-shaped linear light sources 2 are provided on three side surfaces of the light transmission plate 1. The side reflection plate 4 is formed on one side surface of the plate 1 where the light source 2 is not arranged. By arranging the light sources 2 extending over three side surfaces of the plate 1, light is introduced in the plate 1 from three side surfaces thereof. Therefore, the quantity of the light in the plate 1 is increased and the surface light emission whose luminance is high is obtained. Besides, since only one set of electrodes is required, the loss of the electric power of the electrodes is reduced and the power consumption becomes low in comparison with a case that three straight linear light sources are arranged. Moreover, since only one inverter for lighting is required, cost is reduced in comparison with the case that three straight linear light sources are arranged.

公开(公告)号：JPH06138326A

公开(公告)日：1994-05-20

申请号：JP30936992

申请日：1992-10-22

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA ,  KATSUTA TSUTOMU

IPC: G02B6/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To provide the process for production of the surface light emitting device constituted in such a manner that one sheet of reflection plate formed as a rear flank integrating type reflection plate is easily bendable at the boundary between a rear surface reflection part and a flank reflection part. CONSTITUTION:This process for production of the surface light emitting device consists in bending one sheet of the reflection plate 9, which has the rear surface reflection part 5 of a rectangular shape and the flank reflection part 6 of a rectangular strip shape adjacent to one side to be the side facing a light source afterward among the four sides of the above-mentioned reflection part and consists of 'E60 White Polyester(R)' produced by Toray Industries, Inc., perpendicularly at the boundary between the rear surface reflection part 5 and the flank reflection part 6 to form the rear flank integrating type reflection plate 4 and adhering this rear flank integrating type reflection plate 4 to a light transmission plate 1 consisting of an acrylic plate by an acrylic tacky adhesive 10, then building the assembly formed in such a manner into the surface light emitting device 11. Fine wire-shaped scores 8 of 30mm length are put in a straight line at the boundary between the rear surface reflection part 5 and the flank reflection part 6 by using Thomson dies exclusive of joint parts 7 of 0.3mm width which are made to remain six number before bending one sheet of the reflection part 9.

公开(公告)号：JPH04355429A

公开(公告)日：1992-12-09

申请号：JP15752091

申请日：1991-05-31

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA

IPC: F21V8/00 ,  G02F1/1335 ,  G02F1/13357 ,  G09F13/18

Abstract: PURPOSE:To obtain a light emission device achieving a high brightness without loss of the light. CONSTITUTION:A transparent acrylic plate is used for a light conductive plate 1, and a cold cathode tube is disposed in a side surface of the light conductive plate 1 as a linear light source. In the mean-while, a white polyester film is set for a reflection film 3, and a dot-like spacer 4 is formed using ink including acrylic resin having a transparency by screen printing. The reflection film 3 is next wound directly around a linear light source 2 to be fixed at a surface and back of an end part of the light conductive plate 1. White polyethylene terephthalate film is disposed for a backing reflection layer 7 on the back of the light conductive plate 1. A light diffusion film D204 is disposed for a light diffusion layer 6 on the surface of the light conductive plate 1 to obtain a surface light emission device.

公开(公告)号：JPH04355409A

公开(公告)日：1992-12-09

申请号：JP15752391

申请日：1991-05-31

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA

IPC: G02B5/02 ,  G02B6/00 ,  G02F1/1335 ,  G02F1/13357 ,  G03B21/14

Abstract: PURPOSE:To provide a transparent light conductive body having an optional solid shape by using a transfer sheet having a patternized light diffusing layer, and forming a transparent light conductive body and a light diffusing layer simultaneously. CONSTITUTION:A transfer layer containing a patternized light diffusing layer 3 is formed on a transfer sheet 1. The base body sheet 2 side is sent in a molding metal mold 4 so as to be placed along the inwall surface of the metal mold 4. Next, it is positioned in a prescribed position so as to be sandwiched between the metal mold by means of a clamping system. Next, melted resin is injected into the clamped molding metal mold 4. Moldings of a transparent light conductive body having an optional solid shape is formed in this way, and at the same time, the transfer layer on the transfer sheet 1 is transferred onto the surface on the opposite side of the surface being its light emission surface, so that the light diffusing layer 3 can be formed in a prescribed pattern shape. After solidification is finished by means of cooling, a basic sheet 2 is separated from the moldings of the transparent light conductive body.

公开(公告)号：JPH04268506A

公开(公告)日：1992-09-24

申请号：JP5057991

申请日：1991-02-22

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA ,  NAKAJIMA KATSUHIKO

IPC: F21V8/00 ,  G02B5/02 ,  G02B6/00 ,  G02F1/1335 ,  G02F1/13357 ,  G09F13/04

Abstract: PURPOSE:To obtain uniform panel light emission. CONSTITUTION:A cold cathode ray tube is disposed as a line light source 2 on one side face of a transparent light transmission plate 1 made of an acrylic resin and an aluminum sheet printed white is disposed as a side face reflection plate on the other side face. Dotty light diffusive transmission parts 3 are printed and formed on the rear surface of the light transmission plate in such a manner that the area rate thereof is gradually larger the furtherer from the line light source 2 up to the prescribed point between the line light source 2 and the side face reflection plate 4 and the area rate is gradually smaller the nearer the side face reflection plate from the prescribed point. The light diffusive transmission parts 3 are so printed and formed near the line light source 2 that the area rate of the light diffusive transmission parts 3 is gradually larger the nearer the end of the line light source 2 from the central part of the line light source 2.

公开(公告)号：JPH04194903A

公开(公告)日：1992-07-14

申请号：JP32699390

申请日：1990-11-27

Applicant: NISSHA PRINTING

Inventor： FUKUSHIMA YUTAKA ,  YAMAMOTO KUNITOSHI ,  NAKAJIMA KATSUHIKO

IPC: G02B6/00 ,  F21V8/00 ,  G02B5/02 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To substantially prevent the generation of clogging of a plate and defect such as ink thinning and to stabilize the quality at the time of mass production by providing a diffuse transmission parts with patterns of 20 to 29 line density. CONSTITUTION:The diffuse transmission parts 5 of such gradation to gradually increase the areas thereof the further from a light source 1 are formed on the area surface of a transparent light transmission part 2. The light arriving from a light source 1 at the diffuse transmission parts 5 diffuses there and heads further in the multiple directions of the transparent light transmission part 2 such as the directions apart from the light source 1. The diffuse transmission parts 5 are formed by confining the density to

公开(公告)号：JPH03264982A

公开(公告)日：1991-11-26

申请号：JP14305590

申请日：1990-05-31

Applicant: NISSHA PRINTING

Inventor： FUKUSHIMA YUTAKA ,  YAMAMOTO KUNITOSHI

IPC: G02B5/02 ,  G02F1/1335 ,  G02F1/13357 ,  G09F9/00

Abstract: PURPOSE:To reduce the loss and enable uniform lighting by forming light diffusion and transmission parts on the reverse surface of a light transmission plate so that the area increases gradually with the distances from light sources and also arranging a light scattering and transmission part on the reverse surface of the light transmission plate where the light diffusion and transmission parts are formed. CONSTITUTION:The light diffusion and transmission parts 5... 5 are formed on the reverse surface of the light transmission plate 2 while increasing in area gradually with the distances from the light sources 1 and 1, and the light scattering and reflecting plate 4 is arranged on the reverse surface. The majority of light emitted by the light source 1 is equal in incidence angle and reflection angle nearby each light source 1 in the transparent light transmission plate and reflected totally and repeatedly, and the light is guided to nearby the center of the light transmission plate 2. The remaining light, on the other hand, is scattered by the light diffusion and transmission parts 5... 5 which are small in area and guided to the top surface side directly or indirectly after being reflected by the white reflecting plate 4 on the reverse surface of the light transmission plate. Consequently, the light loss is small on the whole and the face light emission device which has extremely high brightness and is uniform is obtained.

公开(公告)号：JPH03208087A

公开(公告)日：1991-09-11

申请号：JP324790

申请日：1990-01-09

Applicant: NISSHA PRINTING

Inventor： YAMAMOTO KUNITOSHI ,  FUKUSHIMA YUTAKA

IPC: G02F1/1335 ,  G02F1/13357 ,  G09F9/00

Abstract: PURPOSE:To equalize the illumination of the display surface of a plane light emitting device by superposing a light diffusion reflecting plate having a roughly uniform reflecting surface under a light diffusing plate, and also, placing a light shielding layer having an area distribution being roughly proportional to an illumination distribution between both of them. CONSTITUTION:On one face of such a light diffusing plate 1 as a milk-white methacrylic resin plate of 1mm thick, a gradation-like light shielding layer 2 is formed by a screen printing method by using black-and-white screen ink. A gradation pattern is designed so as to form a printing film having such an area distribution as is proportional to an illumination distribution on its surface at the time when a light diffusion reflecting plate 3 of the same resin plate is placed on a face light emitting device to which a cold cathode ray tube 5 is attached. In such a state, by placing the layer 2 on the lower side so that the maximum part of photoabsorptivity of the layer 2 comes to the highest illuminance part on the reflecting plate 3 being right above a light source 5, and superposing and placing the diffusing plate 1, the face light emission on the surface of a panel 4 can be equalized.