# US 12,181,125 B2 · Display device and image forming apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,181,125 B2 - Document ID: US12181125B2 - Status: Granted - Kind: B2 - Application number: 17/989,876 - Filed: 2022-11-18 - Published: 2023-06-22 - Granted: 2024-12-31 - Earliest claimed: 2021-12-16 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Shunsuke Tanaka - Web page: https://patentgrep.com/patent/US12181125B2 ## CPC - F21S 8/00: Lighting devices intended for fixed installation (F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00) - H04N 1/0049: {providing a visual indication to the user, e.g. using a lamp (H04N1/00408 takes precedence)} - G03G 15/5016: {User-machine interface; Display panels; Control console} - H04N 1/00496: {Constructional details of the interface or console not otherwise provided for, e.g. rotating or tilting means} - F21W 2111/00: Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS ## Abstract A display device includes a first wall, a second wall disposed opposed to the first wall, a third wall disposed in a direction crossing the first wall and the second wall and provided with a mounting portion, a substrate disposed between the first wall and the second wall and provided with a light emitting portion, and a display portion to permit transmission of light irradiated from the light emitting portion and mounted on the mounting portion. As viewed in a direction perpendicular to a normal direction of the substrate and parallel to the first and second walls, a distance between the first wall and the second wall is shorter than a length of the substrate, and the substrate is inclined with respect to the first and second walls. ## Claims ### Claim 1 An image forming apparatus configured to form an image on a recording material, the image forming apparatus comprising: a first wall extending in a first direction intersecting a vertical direction, the first wall including a first end of the first wall in the first direction; a second wall disposed opposed to the first wall, the second wall extending in the first direction, wherein the second wall includes a second end of the second wall in the first direction; a third wall extending in the vertical direction and connecting the first end and the second end, the third wall being provided with a mounting portion; a substrate disposed between the first wall and the second wall in a second direction intersecting the first direction and the vertical direction and provided with a light emitting portion, the substrate including a mounting surface on which the light emitting portion is provided; and a display unit configured to permit transmission of light irradiated from the light emitting portion and mounted on the mounting portion, wherein the second wall faces a discharging portion to which the recording material is discharged in the second direction, wherein as viewed in the vertical direction, the substrate is inclined with respect to the first wall and the second wall, wherein as viewed in the vertical direction, a distance between the first wall and the second wall in the second direction is shorter than a length of the substrate in a third direction, and wherein the third direction is perpendicular to a normal to the mounting surface. ### Claim 2 (depends on 1) An image forming apparatus according to claim 1, wherein the light emitting portion includes light emitting elements, wherein the display unit includes display portions, and wherein each of the display portions is mounted on the mounting portion corresponding to a respectively corresponding one of the light emitting elements. ### Claim 3 (depends on 2) An image forming apparatus according to claim 2, further comprising a reflecting surface configured to reflect a light emitted from the light emitting elements to a surface where the light emitting elements oppose, and wherein the light emitted from the light emitting elements is reflected by the reflecting surface and is irradiated to the display portions corresponding thereto. ### Claim 4 (depends on 2) An image forming apparatus according to claim 2, further comprising a light guide member provided between the substrate and the third wall, and configured to guide the light emitted from the light emitting elements to the display portions, and wherein the light emitted from the light emitting elements is reflected on an inner surface of the light guide member and is irradiated to the display portions corresponding thereto. ### Claim 5 (depends on 2) An image forming apparatus according to claim 2, wherein the display unit further includes display panels configured to diffuse the light irradiated from a back surface of the display portions inside thereof, and wherein the light emitting elements irradiate the back surface of the display portions corresponding thereto with the light. ### Claim 6 (depends on 2) An image forming apparatus according to claim 2, wherein the substrate is provided with a connector configured to connect a bundle wire through which a signal controlling lighting the light emitting elements is input and a power supply voltage is supplied, and wherein the connector is disposed on a surface opposite to the mounting surface. ### Claim 7 (depends on 2) An image forming apparatus according to claim 2, wherein the light emitting elements are arranged in the vertical direction with respect to each other. ### Claim 8 (depends on 1) An image forming apparatus according to claim 1, wherein the substrate includes a first surface opposite to the mounting surface, and wherein a direction that is normal to the mounting surface and that extends from the first surface to the mounting surface has a component of a direction from the first wall to the second wall.