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 \u00b7 V roce 2017 se odborn\u00e9 v\u011bdeck\u00e9 f\u00f3rum, zab\u00fdvaj\u00edc\u00ed se osv\u011btlovac\u00ed technikou, vyj\u00e1d\u0159ilo ke vzr\u016fstaj\u00edc\u00edmu trendu osv\u011btlov\u00e1n\u00ed m\u011bst v…","datePublished":"2018-03-16","dateModified":"2023-05-24","author":{"@type":"Person","@id":"https:\/\/www.quickchem.cz\/author\/#Person","name":"","url":"https:\/\/www.quickchem.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/1e120f96477763896a9e7ab3663c076bf8b67ca32fa1a5943b70761da502a7a7?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/1e120f96477763896a9e7ab3663c076bf8b67ca32fa1a5943b70761da502a7a7?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"quickchem.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.quickchem.cz\/wp-content\/uploads\/img_a315598_w2600_t1526455280.jpg","url":"https:\/\/www.quickchem.cz\/wp-content\/uploads\/img_a315598_w2600_t1526455280.jpg","height":0,"width":0},"url":"https:\/\/www.quickchem.cz\/zajimavosti-ktere-mozna-o-led-svetelnych-zdrojich-nevite\/","about":["Auto moto"],"wordCount":459,"articleBody":"
 \u00b7 V roce 2017 se odborn\u00e9 v\u011bdeck\u00e9 f\u00f3rum, zab\u00fdvaj\u00edc\u00ed se osv\u011btlovac\u00ed technikou, vyj\u00e1d\u0159ilo ke vzr\u016fstaj\u00edc\u00edmu trendu osv\u011btlov\u00e1n\u00ed m\u011bst v no\u010dn\u00edch hodin\u00e1ch. Napom\u00e1h\u00e1 tomu rychle se rozv\u00edjej\u00edc\u00ed technologie LED zdroj\u016f, kter\u00e9 se objevuj\u00ed na ve\u0159ejn\u00fdch prostranstv\u00edch a osv\u011btluj\u00ed fas\u00e1dy budov, parky, font\u00e1ny, um\u011bleck\u00e1 d\u00edla, chodn\u00edky, ulice, silnice. Tyto zdroje jsou velice \u00fasporn\u00e9 z hlediska p\u0159\u00edkonu elektrick\u00e9 energie, a proto si je mohou m\u011bsta dovolit instalovat na v\u00edce m\u00edst. T\u00edm p\u00e1dem ale vzr\u016fst\u00e1 intenzita no\u010dn\u00edho sv\u011btla. Prok\u00e1zaly to satelitn\u00ed sn\u00edmky – porovn\u00e1n\u00edm sn\u00edmkov\u00e1n\u00ed z doby p\u0159ed \u010dtvrt stolet\u00edm se sou\u010dasn\u00fdm stavem se zv\u00fd\u0161il osvit m\u011bst a\u017e o des\u00edtky procent. To m\u00e1 ov\u0161em neblah\u00fd vliv na kvalitu sp\u00e1nku \u010dlov\u011bka a \u017eivo\u010dich\u016f \u017eij\u00edc\u00edch v m\u011bstsk\u00fdch aglomerac\u00edch a zd\u00e1 se, \u017ee se budou l\u00e9ka\u0159i p\u0159imlouvat za to, aby se sv\u00edtilo v rozumn\u00e9 m\u00ed\u0159e. Aby se p\u0159edev\u0161\u00edm se v\u011bt\u0161ina no\u010dn\u00edch sv\u011btel zhas\u00ednala v dob\u011b mezi p\u016flnoc\u00ed a \u010dtvrtou hodinou rann\u00ed, kdy se tvo\u0159\u00ed nejv\u00edce melatoninu (ve tm\u011b), a kdy se lidsk\u00fd organismus efektivn\u011b regeneruje.
 \u00b7 V\u00edte, \u017ee kdyby v pr\u016fb\u011bhu v\u00e1no\u010dn\u00edch sv\u00e1tk\u016f ve Spojen\u00fdch st\u00e1tech nahradili st\u00e1vaj\u00edc\u00ed osv\u011btlen\u00ed (v\u011bt\u0161inou halogenov\u00e1 sv\u011btla a v\u00fdbojky) LED diodov\u00fdmi sv\u011btly, \u017ee by se t\u00edm v zemi uspo\u0159ilo p\u0159ibli\u017en\u011b 16 miliard americk\u00fdch dolar\u016f?
 \u00b7 V\u00edte, \u017ee prvn\u00ed LED dioda byla vyrobena v roce 1962? Tehdy ji jej\u00ed tv\u016frce N. Holonyak pojmenoval jako \u201ekouzelnou diodu\u201c. Vyza\u0159ovala \u010derven\u00e9 sv\u011bteln\u00e9 spektrum, kter\u00e9 bylo pro tyto diody typick\u00e9 a\u017e do konce 80. let.
 \u00b7 V\u00edte, \u017ee zat\u00edmco klasick\u00e9 vl\u00e1knov\u00e9 \u017e\u00e1rovky (Edisonky) nap\u00e1j\u00ed p\u0159\u00edmo st\u0159\u00eddav\u00fd proud z rozvodn\u00e9 s\u00edt\u011b (zkr\u00e1cen\u011b AC), u LED diodov\u00fdch \u017e\u00e1rovek je to naopak stejnosm\u011brn\u00fd proud (zkr\u00e1cen\u011b DC), kter\u00fd produkuje p\u0159evad\u011b\u010d (vnit\u0159n\u00ed zdroj \u2013 transform\u00e1tor)? N\u00e1zev zn\u00e1m\u00e9 rockov\u00e9 kapely AC\/DC vznikl pr\u00e1v\u011b ze zkratek st\u0159\u00eddav\u00e9ho a stejnosm\u011brn\u00e9ho proudu.
 \u00b7 V\u016fbec prvn\u00ed objev tohoto principu vzniku sv\u011btla poch\u00e1z\u00ed ji\u017e z roku 1907. Jist\u00fd v\u011bdec H. J. Round zjistil, \u017ee pr\u016fchodem elektrick\u00e9ho proudu n\u011bkter\u00fdmi l\u00e1tkami (anorganick\u00e9ho p\u016fvodu) vznik\u00e1 tzv. sv\u011bteln\u00fd elektroluminiscen\u010dn\u00ed polovodi\u010dov\u00fd jev. Jeho vyn\u00e1lez se v\u0161ak nikde neujal, a tak si musel na svou reinkarnaci po\u010dkat n\u011bkolik des\u00edtek let.                                                                                                                                                                                                                                                                                                                                                                                        4.2\/5 - (8 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Zaj\u00edmavosti, kter\u00e9 mo\u017en\u00e1 o LED sv\u011bteln\u00fdch zdroj\u00edch nev\u00edte","item":"https:\/\/www.quickchem.cz\/zajimavosti-ktere-mozna-o-led-svetelnych-zdrojich-nevite\/#breadcrumbitem"}]}]