ITSA20100006A1 - HIGHLY PERFORMANCE ELECTRIC LED ROAD LAMP PROVIDED WITH AN INTEGRATED THERMAL DISSIPATION SYSTEM AND ANTI-SHUTDOWN SAFETY SYSTEM. - Google Patents

HIGHLY PERFORMANCE ELECTRIC LED ROAD LAMP PROVIDED WITH AN INTEGRATED THERMAL DISSIPATION SYSTEM AND ANTI-SHUTDOWN SAFETY SYSTEM. Download PDF

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Publication number
ITSA20100006A1
ITSA20100006A1 IT000006A ITSA20100006A ITSA20100006A1 IT SA20100006 A1 ITSA20100006 A1 IT SA20100006A1 IT 000006 A IT000006 A IT 000006A IT SA20100006 A ITSA20100006 A IT SA20100006A IT SA20100006 A1 ITSA20100006 A1 IT SA20100006A1
Authority
IT
Italy
Prior art keywords
per
printed circuit
armature
fixed
safety system
Prior art date
Application number
IT000006A
Other languages
Italian (it)
Inventor
Francesco Vita
Original Assignee
Manufatti Cemento Ferro S A S Di V Ita Francesco
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 Manufatti Cemento Ferro S A S Di V Ita Francesco filed Critical Manufatti Cemento Ferro S A S Di V Ita Francesco
Priority to IT000006A priority Critical patent/ITSA20100006A1/en
Publication of ITSA20100006A1 publication Critical patent/ITSA20100006A1/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
    • H05K1/0203—Cooling of mounted components
    • H05K1/0204—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate
    • 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
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Road Signs Or Road Markings (AREA)

Description

DESCRIZIONE DESCRIPTION

Le caratteristiche complessive dell'invenzione sono le seguenti: The overall characteristics of the invention are as follows:

1. Altissimo rendimento luminoso ed elettrico 1. Very high light and electrical efficiency

2. Alto grado di scambio termico 2. High degree of heat exchange

3. Sicurezza di funzionamento 3. Operational safety

4. Funzionamento a Bassa tensione ( < 50 Vca3⁄4 4. Low voltage operation (<50 Vac3⁄4

• Composizione dell'invenzione e definizione delle caratteristiche • Composition of the invention and definition of the characteristics

L'oggetto descritto nella seguente invenzione è stato progettato per essere industrializzato secondo regole di filiera produttiva e, quindi, secondo canoni di qualità ed affidabilità tipiche di un prodotto serializzabile. Lo scopo principale è quello di ottenere un prodotto di qualità , ripetibile e certificato. Di seguito si illustrano le parti che compongono l'invenzione: The object described in the following invention has been designed to be industrialized according to production chain rules and, therefore, according to quality and reliability standards typical of a serializable product. The main purpose is to obtain a quality, repeatable and certified product. The parts that make up the invention are illustrated below:

1. Piastra - circuito stampato in alluminio con asole e alette integrate 1. Plate - aluminum printed circuit with integrated slots and fins

2. Elementi illuminanti a stato solido LED ad altissima efficienza. 2. Very high efficiency LED solid state lighting elements.

3. Circuito alimentatore ad altissima efficienza di conversione. 3. Very high conversion efficiency power supply circuit.

4. Diodi zener e resistore in parallelo a ciascun elemento LED 4. Zener diodes and resistor in parallel with each LED element

5. Contenitore in materiale plastico o metallico ad elevata trasmittanza termica. 5. Plastic or metal container with high thermal transmittance.

Le caratteristiche illustrate nel capoverso precedente The characteristics illustrated in the previous paragraph

1, Altissimo rendimento luminoso ed elettrico 1, Very high light and electrical output

Il prodotto oggetto di brevetto è realizzato in modo tale da produrre un risparmio energetico rispetto ad analoghi prodotti convenzionali. Lo scopo viene raggiunto impiegando sorgenti luminose a stato solido che abbiano un elevato rapporto lumen/watt ed alimentatori elettronici dedicati ad altissima efficienza di conversione. The patented product is made in such a way as to produce energy savings compared to similar conventional products. The purpose is achieved by using solid state light sources that have a high lumen / watt ratio and dedicated electronic ballasts with very high conversion efficiency.

2. Alto grado di scambio termico 2. High degree of heat exchange

I dispositivi illuminanti a stato solido di potenza - High Power LED - hanno la caratteristica di produrre una notevole quantità di calore che deve essere necessariamente smaltito. Un errato dimensionamento del dissipatore termico può causare un drastico abbassamento della vita utile del dispositivo illuminante fino alla sua completa distruzione. La realizzazione delle asole e delle corrispondenti integrate nel circuito stampato fa si che la superficie di scambio termico totale aumenti e, di conseguenza, aumenti anche lo scambio termico per convezione naturale. Infatti nelle asole realizzate nel circuito stampato in alluminio si produce un flusso di aria ascendente che sottrae calore alla piastra e lo trasporta verso l'alto. Le alette ricavate dall'asolatura vengono calcolate in funzione del tipo di LED impiegato e della relativa potenza di esercizio. Questo accorgimento permette una migliore distribuzione degli elementi illuminanti sulla piastra nonché una corretta gestione termica degli stessi procurando per via diretta un aumento considerevole della loro durata. The solid-state power lighting devices - High Power LEDs - have the characteristic of producing a considerable amount of heat that must necessarily be disposed of. An incorrect sizing of the heat sink can cause a drastic reduction in the useful life of the lighting device up to its complete destruction. The realization of the slots and the corresponding ones integrated in the printed circuit causes the total heat exchange surface to increase and, consequently, the heat exchange by natural convection also increases. In fact, in the slots made in the aluminum printed circuit, an ascending air flow is produced which extracts heat from the plate and carries it upwards. The fins obtained from the slot are calculated according to the type of LED used and the relative operating power. This expedient allows a better distribution of the lighting elements on the plate as well as a correct thermal management of the same, directly obtaining a considerable increase in their duration.

Sicurezza di funzionamento Operation safety

Gli elementi illuminanti a stato solido - LED - sono naturalmente collegati in serie per avere alimentatori a bassa corrente. In questo caso se un elemento cessa di funzionare, inevitabilmente si spegne tutta la serie. The solid state lighting elements - LEDs - are naturally connected in series to have low current power supplies. In this case, if one element stops working, the whole series will inevitably shut down.

Tale problematica viene agevolmente superata inserendo in parallelo a ciascun elemento illuminante e stato solido - LED - una serie formata da un diodo Zener ed un resistore in modo da avere che This problem is easily overcome by inserting in parallel to each lighting element and solid state - LED - a series formed by a Zener diode and a resistor so as to have that

Ovvero la tensione caratteristica di un LED è uguale alla somma delia tensione di Zener più la caduta ottenuta sui resistore R attraversato dalla corrente That is, the characteristic voltage of an LED is equal to the sum of the Zener voltage plus the drop obtained on the resistor R crossed by the current

Nel caso in cui si verifichi un'avaria di un LED accade che la tensione ai capi dello zener raggiunge la tensione di zener Vz e quindi inizia a condurre sostituendo in toto il LED difettoso ed impedendo alia serie di spegnersi. In the event that an LED failure occurs, the voltage across the zener reaches the zener voltage Vz and then begins to conduct, completely replacing the faulty LED and preventing the series from switching off.

Funzionamento a Bassissima tensione ( < 50 V) Very low voltage operation (<50 V)

Tutto il circuito esposto a possibili contatti fisici è alimentato con tensioni < 50V ca. Tale caratteristica garantisce un adeguata protezione contro eventuali elettrocuzioni accidentali o dovute ad anomalie circuitali. The whole circuit exposed to possible physical contacts is powered with voltages <50V approx. This feature guarantees adequate protection against any accidental electrocution or due to circuit anomalies.

Claims (1)

RIVENDICAZIONI Di seguito si descrive un assemblato tipo dell'invenzione descritta: Un "LAMPIONE STRADALE A LED AD ALTISSIMO RENDIMENTO ELETTRICO PROVVISTO DI SISTEMA INTEGRATO DI DISSIPAZIONE TERMICA E DI SISTEMA DI SICUREZZA ANTI SPEGNIMENTO è formato da: 1. Circuito Stampato in alluminio (0) provvisto di asole(l) ed alette di raffreddamento (2) integrate ; 2. Elementi illuminanti a stato solido - LED - ad altissima efficienza luminosa(3), saldati sul circuito stampato di cui alla rivendicazione (1) mediante saldatura a rifusione del tipo Lead free; 3. Gruppo di protezione formato da zener e/o resistore, posto in serie a ciascun elemento illuminante di cui alla rivendicazione (2); 4. Contenitore esterno o armatura, in materiale plastico o metallico, di forma qualsiasi, in cui viene fissato il circuito stampato, completo di elementi illuminanti a stato solido -LED, di cui alla rivendicazione (1) e (2), e di gruppo di protezione, di cui alla rivendicazione (3); 5. Circuito alimentatore di tipo Switching ad altissimo rendimento fissato, mediante viti o bulloni o in qualunque modo che ne assicuri un fissaggio stabile, nell' armatura di cui alla rivendicazione (4) 6. Trasformatore toroidale ad alta efficienza fissato anch'esso mediante viti o bulloni o in qualunque modo che ne assicuri un fissaggio stabile nell' armatura di cui alla rivendicazione (4); 7. Cavetteria di collegamento di sezione adeguata all'assorbimento previsto e del tipo a bassa emissione di fumo e/o antifiamma,CLAIMS A standard assembly of the described invention is described below: A "VERY HIGH ELECTRIC EFFICIENCY LED STREET LAMP EQUIPPED WITH INTEGRATED HEAT DISSIPATION SYSTEM AND ANTI SHUTDOWN SAFETY SYSTEM is made up of: 1. Printed circuit in aluminum (0) with integrated slots (l) and cooling fins (2); 2. Solid state lighting elements - LEDs - with very high luminous efficiency (3), soldered on the printed circuit as per claim (1) by lead free reflow soldering; 3. Protection group formed by zener and / or resistor, placed in series with each illuminating element as per claim (2); 4. External container or armature, in plastic or metal material, of any shape, in which the printed circuit is fixed, complete with solid-state lighting elements -LED, as per claims (1) and (2), and group protection, referred to in claim (3); 5. Switching type power supply circuit with very high efficiency fixed, by means of screws or bolts or in any way that ensures a stable fixing, in the armature referred to in claim (4) 6. High efficiency toroidal transformer also fixed by means of screws or bolts or in any way that ensures a stable fixing in the armature as per claim (4); 7. Connection cables with a section suitable for the expected absorption and of the low smoke and / or flame retardant type,
IT000006A 2010-02-16 2010-02-16 HIGHLY PERFORMANCE ELECTRIC LED ROAD LAMP PROVIDED WITH AN INTEGRATED THERMAL DISSIPATION SYSTEM AND ANTI-SHUTDOWN SAFETY SYSTEM. ITSA20100006A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT000006A ITSA20100006A1 (en) 2010-02-16 2010-02-16 HIGHLY PERFORMANCE ELECTRIC LED ROAD LAMP PROVIDED WITH AN INTEGRATED THERMAL DISSIPATION SYSTEM AND ANTI-SHUTDOWN SAFETY SYSTEM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000006A ITSA20100006A1 (en) 2010-02-16 2010-02-16 HIGHLY PERFORMANCE ELECTRIC LED ROAD LAMP PROVIDED WITH AN INTEGRATED THERMAL DISSIPATION SYSTEM AND ANTI-SHUTDOWN SAFETY SYSTEM.

Publications (1)

Publication Number Publication Date
ITSA20100006A1 true ITSA20100006A1 (en) 2010-05-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
IT000006A ITSA20100006A1 (en) 2010-02-16 2010-02-16 HIGHLY PERFORMANCE ELECTRIC LED ROAD LAMP PROVIDED WITH AN INTEGRATED THERMAL DISSIPATION SYSTEM AND ANTI-SHUTDOWN SAFETY SYSTEM.

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IT (1) ITSA20100006A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5844779A (en) * 1995-04-27 1998-12-01 Lg Semicon Co., Ltd. Semiconductor package, and semiconductor device using the same
US20070081340A1 (en) * 2005-10-07 2007-04-12 Chung Huai-Ku LED light source module with high efficiency heat dissipation
US20070230184A1 (en) * 2006-03-31 2007-10-04 Shuy Geoffrey W Heat exchange enhancement
US20070290328A1 (en) * 2006-06-16 2007-12-20 Gigno Technology Co., Ltd. Light emitting diode module
CN201288950Y (en) * 2008-08-15 2009-08-12 北京中庆微数字设备开发有限公司 LED lamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5844779A (en) * 1995-04-27 1998-12-01 Lg Semicon Co., Ltd. Semiconductor package, and semiconductor device using the same
US20070081340A1 (en) * 2005-10-07 2007-04-12 Chung Huai-Ku LED light source module with high efficiency heat dissipation
US20070230184A1 (en) * 2006-03-31 2007-10-04 Shuy Geoffrey W Heat exchange enhancement
US20070290328A1 (en) * 2006-06-16 2007-12-20 Gigno Technology Co., Ltd. Light emitting diode module
CN201288950Y (en) * 2008-08-15 2009-08-12 北京中庆微数字设备开发有限公司 LED lamp

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