Pager receiver including a light emitting and a light sensing element adjacent to a translucent portion of a receiver housing

• US 4,876,537 A
• Filed: 12/28/1987
• Issued: 10/24/1989
• Est. Priority Date: 12/25/1986
• Status: Expired due to Fees

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Oyamada, Takashi
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/138,274
• Time in Patent Office: 666 Days
• Field of Search: 340/825.44, 340/825.47, 340/825.48, 340/311.1, 340/312, 340/313, 340/700, 340/765, 379/56, 379/57, 455/351
• US Class Current: 340/7.63
• CPC Class Codes: G02F 1/1336 Illuminating devices
• CPC Class Codes: G02F 2201/58 Arrangements comprising a monitoring photodetector
• CPC Class Codes: G08B 5/225 Display details

Abstract

For simplifying a pager housing (14) containing a light sensing and a light emitting element (36 and 38), the housing has a common translucent portion (30). The light sensing and the light emitting elements are disposed adjacent to the translucent portion. The light emitting element is for indicating reception of a call. The light sensing element is useful to control operation of a display element (42) which is displaying a message and other. Preferably, the housing comprises holding arrangements for holding a protecting plate (24) for the display element. The holding arrangements are engaged with both ends of the protecting plate.

Claims

1. In a pager receiver comprising, in a housing having a display panel and a translucent portion, a light emitting element for indicating reception of a call, a light sensing element for sensing an illuminance at said translucent portion to produce a control signal representative of said illuminance, and an illuminating element for illuminating said display panel when the illuminance represented by said control signal is below a threshold value, the improvement wherein said light emitting element is disposed adjacent to said translucent portion such that said translucent portion is shared by said light sensing and light emitting elements.

2. A pager receiver as claimed in claim 1, wherein:

said housing comprises a stepped portion which surrounds a mounting space for said display panel and has a recessed portion adjacent to one end of said mounting space;

said display panel comprising a display element and a protecting plate for protecting said display element, said protecting plate having an end portion which is received in said recessed portion.

3. A pager receiver as claimed in claim 2, wherein:

said housing comprises a flange portion inwardly extended from said stepped portion and a rod portion perpendicularly extended from said flange portion;

said protecting plate having a through hole at an end opposite to said end portion, said through hole being for receiving said rod portion.

4. A pager receiver as claimed in claim 3, said rod portion having a peripheral surface, wherein:

said housing further comprises an engaging portion radially outwardly extended from said peripheral surface in contact with a back surface of said protecting plate.

5. A pager receiver as claimed in claim 4, wherein said housing further comprises an adhesive tape between said protecting plate and said flange portion to attach said protecting plate to said flange portion.

6. A pager receiver as claimed in claim 5, wherein said adhesive tape is of a pressure sensitive double coated tape.

7. A pager receiver as claimed in claim 1, said housing having a side and a top adjacent to said side, said translucent portion comprising a first and a second portion located at said side and said top, respectively, said display panel being disposed at said top, wherein said light emitting and said light sensing elements are disposed to face said first and said second portions, respectively.