Night light

• US 6,390,647 B1
• Filed: 12/30/1998
• Issued: 05/21/2002
• Est. Priority Date: 12/31/1997
• Status: Expired due to Fees

• Current Assignee: Quality Night Lights LLC (Mark Baerwaldt)
• Original Assignee: Louisa Shaefer
• Inventors: Shaefer, Louisa
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): Hobden, David V.
• Application Number:
  US09/222,901
• Time in Patent Office: 1,238 Days
• Field of Search: 362/276, 362/802, 362/226, 362/267, 362/311, 362/374, 362/375, 362/310, 362/295
• US Class Current: 362/276
• CPC Class Codes: F21S 8/035 by means of plugging into a wall outlet, e.g. night light
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 31/00 Gas-tight or water-tight arrangements
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection
• CPC Class Codes: Y10S 362/802 Position or condition responsive switch

Abstract

A night light design which allows for improved functionality over those heretofore available. The basic design is flexible enough to be adapted for either indoor or outdoor use, and for various brightness levels. Particularly for outdoor use, bulbs of up to 15 watts can be used, providing an increased illumination level. All designs preferably include a light sensing element and a control circuit, wherein the light turns itself on when the ambient lighting levels fall low enough. Also, several preferred embodiments include a variable control, wherein the brightness of the night light can be continuously varied between very dim and full brightness.

Claims

1. An improved night light, comprising:

a housing suitable for connecting to an electrical outlet, such housing having a front and a back, and at least two conductive blades extending from the back in an arrangement suitable for insertion into an electrical outlet, whereby insertion of the blades into an outlet places the housing back into a position immediately adjacent the outlet, wherein the housing is no larger than approximately the size of a two plug electrical outlet, and wherein the housing is sealed to be weathertight, whereby it is suitable for use outdoors;

a bulb mounted on the housing;

a switch having a portion extending from the housing, the extending portion capable of physical movement by a person between at least first, second, and third positions; and

a control circuit within the housing and connected to the switch for connecting the bulb to electrical power, wherein the control circuit is operable to turn the bulb off when the switch is in the first position, to turn the bulb on at a first brightness when the switch is in the second position, and to turn the bulb on at a second brightness brighter than the first brightness when the switch is in the third position.

14. The night light of claim 1, wherein the control circuit includes a motion detector to turn the night light on in response to movement nearby.

15. The night light of claim 14, wherein the motion detector turns the night light on to the second brightness in response to movement.

16. The improved night light of claim 1, further comprising:

a ground fault interrupter connected to the control circuit, wherein the night light is protected from the occurrence of an unsafe ground fault condition.

2. An improved night light for use in an outdoor installation, comprising:

an outlet box cover adapted to mount over an electrical outlet in an outlet box, the electrical outlet having at least first and second outlets;

a gasket attached to a back surface of the outlet box cover to sealingly engage the outlet box and provide a weathertight cover therefor;

a light transmitting cover plate over a portion of the outlet box cover, positioned so as to provide a seal and cover the first outlet when the outlet box cover is installed over the outlet box;

three conductive blades extending from the outlet box cover behind the cover plate for insertion into the first electrical outlet, including two blades for conducting power and a third blade adapted for insertion into a grounding receptacle;

a hinged door connected to the outlet box cover, and positioned to cover a second electrical outlet and protect it from the weather;

an incandescent bulb mounted under the cover plate; and

a control circuit within the outlet box cover, connected to the blades and the bulb, to control operation of the bulb.

3. The night light of claim 2, wherein the control circuit includes a photosensitive device to turn the bulb on and off as a function of ambient light levels.

4. The night light of claim 2, wherein the control circuit includes an on/off switch.

5. The night light of claim 2, wherein the cover plate is transparent.

12. The improved night light of claim 2, further comprising:

a ground fault interrupter connected to the control circuit, wherein the night light is protected from the occurrence of an unsafe ground fault condition.

13. The improved night light of claim 2, wherein the cover plate has vents, and wherein the bulb is mounted in a socket attached to the outlet box cover, further comprising:

a gasket around the base of the bulb to seal the socket from the weather.

17. The night light of claim 2, wherein the control circuit includes a motion detector to turn the night light on in response to movement nearby.

6. An improved night light for outdoor use, comprising:

a housing which is sealed against weather;

blades connected to the housing for insertion into an electrical outlet;

a bulb mounted in a socket connected to the housing;

a light transmitting cover plate connected to the housing and covering the bulb, wherein the cover plate is sealed against the weather, and has a base which is sealed to the housing with an O-ring; and

a control circuit within the housing which controls operation of the bulb.

7. The night light of claim 6, wherein the housing includes a gasket between the housing and the outlet to provide a seal against the weather.

8. The night light of claim 6, wherein the control circuit is an on and off control for the bulb.

9. The night light of claim 8, wherein the control circuit includes a photosensitive device to control operation of the bulb in response to ambient light levels.

10. The night light of claim 6, wherein the control circuit includes a motion detector to turn the night light on in response to movement nearby.

18. The improved night light of claim 6, further comprising:

a ground fault interrupter connected to the control circuit, wherein the night light is protected from the occurrence of an unsafe ground fault condition.

11. An improved night light, comprising:

a housing suitable for connecting to an electrical outlet, such housing having a front and a back, and at least two conductive blades extending from the back in an arrangement suitable for insertion into an electrical outlet, whereby insertion of the blades into an outlet places the housing back into a position immediately adjacent the outlet, wherein the housing is no larger than approximately the size of a two plug electrical outlet;

a bulb mounted on the housing;

a switch having a portion extending from the housing, the extending portion capable of physical movement by a person between at least first, second, and third positions; and

a control circuit within the housing and connected to the switch for connecting the bulb to electrical power, wherein the control circuit is operable to turn the bulb off when the switch is in the first position, to turn the bulb on at a first discrete brightness level when the switch is in the second position, and to turn the bulb on at a second discrete brightness level brighter than the first discrete brightness level when the switch is in the third position, and wherein the control circuit is not operable to turn the bulb on at a brightness level intermediate the first brightness level and the second brightness level;

wherein the switch extending portion also has a fourth position, and wherein the control circuit is operable to turn the bulb on at a third brightness level brighter than the second brightness level.

19. The night light of claim 11, wherein the control circuit includes a motion detector to turn the night light on in response to movement nearby.

20. The night light of claim 19, wherein the motion detector turns the night light on to the second brightness in response to movement.

21. The night light of claim 19, wherein the motion detector turns the night light on to the third brightness in response to movement.

22. The improved night light of claim 11, further comprising:

a ground fault interrupter connected to the control circuit, wherein the night light is protected from the occurrence of an unsafe ground fault condition.