Sharp Kabushiki Kaisha Corporation

Tomohiko Okada

Shohichi Fukutome

Mitsuharu Yoshimoto

Yasuhiro Suto

Kenji Nakanishi

Hisashi Yamanaka

Kenji Tanaka

Yoshitaka Okahashi

Tetsushi Ito

Yukihito Nishio

Takao Horiuchi

Hirotoshi Iemura

Yoshihisa Yamada

Noritomo Nakashima

Akira Kohno

Takeshi Murakami

Susumu Murakami

Kimihide Tsukamoto

Yoshiaki Ibuchi

Shirou Wakahara

Ayumu Oda

Hideshi Izumi

Keiji Sakai

Minoru Tomiyori

Takaharu Motoyama

Takateru Yamamoto

Motoaki Okitsu

Yasushi Matsutomo

Kazuhiro Mizude

Hideyuki Hiro

Shinji Sugita

Kiwamu Morita

Takashi Makiura

Hiroshi Kamiyama

Tadaaki Kawano

Haruyoshi Migita

Yoshinobu Okumura

Toshiyuki Gotoh

Katsuaki Yamada

Seiichi Kizu

Yoshiyuki Nishizato

Shinichiro Hiraoka

Takashi Nishida

Eiji Kurimoto

Daisuke Mukaiyama

Toshio Takehara

Fumio Shiozaki

Kunihiko Sakaguchi

Yoshikazu Fukuda

Hiroshi Sudoh

Masakatsu Kusuda

Yutaka Fukuda

Hideo Maeda

Atsushi Saito

Kouji Aoki

Wooseong Jeong

Masaki Nishizaka

Hidenori Ishii

Kazuhiko Ashiya

A display device includes a housing, a display panel, a light source, a first acquirer, a second acquirer, and a stabilizer. The display panel is provided in the housing. The light source is provided in the housing, and includes an LED that irradiates the display panel with light. The first acquirer acquires a first temperature in a first region including a region where the light source is disposed in the housing. The second acquirer acquires a second temperature in a second region different from the first region. The stabilizer has a first adjustment mode for lighting the LED with maximum luminance as an adjustment mode for stabilizing luminance of the LED. The stabilizer operates the LED in the first adjustment mode in a case where a temperature difference between the first temperature and the second temperature is a first threshold value or more.

Display device

An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array and a reflective plate are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member is disposed on the side of the LED array. The light-guiding member includes a direct emission unit disposed between an illumination range y centered on a document reading position and the LED array and an indirect emission unit disposed between the reflective plate and the LED array, a light incidence face of the direct emission unit and a light incidence face of the indirect emission unit are disposed at mutually different position around the LED array, and the LED array is disposed on a side of an interior angle formed by the light incidence faces.

Illuminating device, image reading apparatus including the illuminating device, and image forming apparatus including the image reading apparatus

An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array () and a reflective plate () are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member () is disposed on the side of the LED array (). The light-guiding member () includes a direct emission unit () disposed between an illumination range y centered on a document reading position and the LED array () and an indirect emission unit () disposed between the reflective plate () and the LED array (), a light incidence face of the direct emission unit () and a light incidence face of the indirect emission unit () are disposed at mutually different position around the LED array (), and the LED array () is disposed on a side of an interior angle formed by the light incidence faces.

In an image display apparatus, a protruding portion is fixed to a chassis on a back side Zof a planar member and protrudes towards the planar member. The protruding portion has one or more first protruding members and one or more second protruding members and defines a small allowance region and a large allowance region for the planar member. In the small allowance region, an amount of displacement of the planar member towards the chassis side is regulated at most to a first predetermined value by the one or more first protruding members. In the large allowance region, an amount of displacement of the planar member towards the chassis side is regulated at most to a second predetermined value larger than the first predetermined value by the one or more second protruding member.

Image display apparatus

Illuminating device, image reading apparatus including the illuinating device, and image forming apparatus including the image reading apparatus

A display apparatus includes a display section, a control section, and a cooling section including a first ceiling section, a second ceiling section, a first connecting section and an air stream generating section. The first ceiling section is formed such that a distance of the first ceiling section from a non-display surface of the display section is shorter than that of the second ceiling section, and a ventilating area of a first ventilating passage is smaller than that of a second ventilating passage. The air stream generating section is configured such that an air stream is generated from the second ventilating passage toward the first ventilating passage so as to take the air out of the first ventilating passage and the second ventilating passage, and replenish the taken air with the ambient air. The control section is provided on a control section mounting surface of the first ceiling section.

Display apparatus including cooling section

In a light source unit () serving as an embodiment of an illuminating apparatus, when P is a light-emitting element pitch [mm], and H is an optical axis distance [mm] between light-emitting elements () and an original (G), and when, in an illuminance cycle (T) representing repetition of bright and dark areas in a main scanning direction (X) on a light-irradiated face (Gs) of the original (G) caused by the light-emitting elements (), the light-emitting element pitch (P) and the optical axis distance (H) are set such that unevenness [%] (M) (=(LL)/L%]) obtained by dividing a value obtained by subtracting a minimum illuminance value (L) from a maximum illuminance value (L) by an average illuminance value (L) and an inter-unevenness distance [mm] (N) which is a half cycle of the illuminance cycle (T) satisfy the relation M&#x2266;N/2&#x2212;5.5, and more preferably, M&#x2266;N/2&#x2212;7.5.

Illuminating apparatus, image reading apparatus, and image forming apparatus

An illuminating device includes a light-emitting element that is mounted on a base material and a light-guiding member that guides light from the light-emitting element to an irradiation target, and illuminates the irradiation target with the light transmitted through the light-guiding member. The light-guiding member includes an extending portion that extends from the surface of the base material on which the light-emitting element is mounted to a left side end portion of the base material so as to cover the left side end portion. An image-reading includes this illuminating device. Image-forming apparatus includes this image-reading apparatus.

Illuminating device, image-reading apparatus comprising the illuminating device, and image-forming apparatus comprising the image-reading apparatus

An embodiment of the present invention provides an illuminating device that is disposed in an image-reading apparatus and image-forming equipment, including a light-source portion on one side; a light-source portion on the other side; and a long translucent light-guiding member having a light-discharging face long in a longitudinal direction thereof, and guiding light derived from the one light-source portion from one end face in the longitudinal direction, and light derived from the other light-source portion from the other end face in the longitudinal direction so that the guided light is irradiated to an object through the long light-discharging face; wherein the one and the other light-source portions are arranged such that positions of optical axes thereof differ from each other in a direction that is parallel to a light-irradiated face of the object and in a direction that is perpendicular to the longitudinal direction of the light-guiding member.

Illuminating device, image-reading apparatus, and image-forming equipment

A document reader has a main conveying path, an auxiliary conveying path, a pickup roller, a first conveying roller, and a second conveying roller. The auxiliary conveying path runs between a first connection point and a second connection point on the main conveying path. The cylindrical surface of the first conveying roller is located partially on the main conveying path and partially on the auxiliary conveying path. While the first conveying roller is under the forward or reverse control, it rotates normally. The cylindrical surface of the second conveying roller is located partially on the main conveying path between the second connection point and a discharge position. A controller switches from the forward control selected during this mode to the reverse control, while a document being conveyed along the main conveying path is out of contact with the first conveying roller.

Document reader

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Osaka, Japan

Tomohiko Okada