GB2099975B - Improvements in navigation lanterns - Google Patents

Improvements in navigation lanterns

Info

Publication number
GB2099975B
GB2099975B GB8215209A GB8215209A GB2099975B GB 2099975 B GB2099975 B GB 2099975B GB 8215209 A GB8215209 A GB 8215209A GB 8215209 A GB8215209 A GB 8215209A GB 2099975 B GB2099975 B GB 2099975B
Authority
GB
United Kingdom
Prior art keywords
lamps
lens
heat
support block
high intensity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB8215209A
Other versions
GB2099975A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dunlop Ltd filed Critical Dunlop Ltd
Priority to GB8215209A priority Critical patent/GB2099975B/en
Publication of GB2099975A publication Critical patent/GB2099975A/en
Application granted granted Critical
Publication of GB2099975B publication Critical patent/GB2099975B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/04—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for waterways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/04—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for waterways
    • F21W2111/043—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for waterways for lighthouses or lightships

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A navigation lantern for use as a beacon or buoy achieves a high intensity light output without the need for a cylindrical glass lens of large diameter by providing, in the vicinity of the focal point of the lens, a light source comprising at least two halogen type lamps. The use of more than one lamp assists in avoiding undue vertical divergence of the high intensity beam issuing from the lens, and reduces the concentration of heat generated in the lantern. Damage to lamp control electronics by heat from the lamps is further safeguarded against by the provision of a heat shield between the lamps and a terminal support block. Preferably the shield is spaced from the support block.
GB8215209A 1981-05-26 1982-05-25 Improvements in navigation lanterns Expired GB2099975B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8215209A GB2099975B (en) 1981-05-26 1982-05-25 Improvements in navigation lanterns

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8115971 1981-05-26
GB8215209A GB2099975B (en) 1981-05-26 1982-05-25 Improvements in navigation lanterns

Publications (2)

Publication Number Publication Date
GB2099975A GB2099975A (en) 1982-12-15
GB2099975B true GB2099975B (en) 1984-11-28

Family

ID=26279592

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8215209A Expired GB2099975B (en) 1981-05-26 1982-05-25 Improvements in navigation lanterns

Country Status (1)

Country Link
GB (1) GB2099975B (en)

Also Published As

Publication number Publication date
GB2099975A (en) 1982-12-15

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee