X'tip ta 'lampa tal-mejda għall-protezzjoni tal-għajnejn hija adattata għat-tfal biex jużaw?
Children's eyesight problems have become more and more serious in recent decades, not only because of the frequent use of mobile phones, computers and other electronic products, but also because of the heavy schoolwork pressure of today's children, requiring long hours of study at desks. Most children have different degree of myopia. As an item placed on a writing desk or a dining table for lighting, a desk lamp is actually one of the important factors that affect children's eyesight. It must not be sloppy when choosing. Come and see what kind of eye protection table lamp is suitable for children to use!
1. Issodisfa l-kundizzjonijiet tal-prestazzjoni ottika
Biex tiġġudika jekk lampa tal-iskrivanija hijiex kwalifikata jew le. L-ewwel iridu jintlaħqu tliet rekwiżiti ta 'prestazzjoni ottika. Meta l-lampa tal-iskrivanija tal-kitba tkun fil-pożizzjoni normali tax-xogħol, hemm it-tliet rekwiżiti ewlenin ta 'prestazzjoni ottika li ġejjin.
Sfumatura: Meta persuna tkun f'pożizzjoni normali ta 'seduta, il-ħajt ta' ġewwa tal-lampshade u s-sors tad-dawl m'għandhomx jidhru meta l-għajnejn iħarsu fid-direzzjoni orizzontali;
Rekwiżiti ta 'illuminazzjoni tad-desktop: Iż-żona tax-xogħol illuminata mill-lampa ta' l-iskrivanija għandha tkun 250lx-500lx, u l-illuminazzjoni minima għandha tkun Akbar minn jew ugwali għal 120lx.
Rekwiżiti ta 'uniformità ta' l-illuminazzjoni: Għandu jiġi żgurat li l-illuminazzjoni fiż-żona tax-xogħol irradjata mill-lampa ta 'l-iskrivanija hija relattivament uniformi, u ma jistgħu jiġu prodotti l-ebda tikek partikolarment qawwi jew skuri. Biss billi jiġu żgurati dawn it-tliet rekwiżiti bażiċi ta 'prestazzjoni ottika tista' tnaqqas l-għeja tal-għajnejn u tissejjaħ fanal tal-kitba Desk.
2. Sors tad-dawl xieraq
Sors ta 'dawl radjanti
Thermal radiation light source is a kind of incoherent light source, which is a light source that converts thermal energy into light energy under the state of thermal equilibrium of luminous objects, such as incandescent lamps, tungsten halogen lamps, etc. The radiant light source has high color rendering and continuous spectrum. Color rendering is a measure of how close an object's color is to the color it would display under sunlight. Generally speaking, the higher the color rendering (0 - 100), the more realistic the color reproduction is. In theory, this type of light source is the most suitable.
Sors tad-dawl tal-ħruġ tal-gass
Fanal ta 'skarigu tal-gass huwa fanal li jarmu dawl permezz ta' ħruġ ta 'gass, fwar tal-metall jew taħlita ta' diversi gassijiet u fwar tal-metall. Sors ta’ dawl elettriku li jikkonverti l-enerġija elettrika f’dawl permezz ta’ ħruġ ta’ gass. Fl-applikazzjoni ta' lampi tal-mejda, lampi fluworexxenti (vireg elettriċi) u lampi fluworexxenti kompatti (lampi li jiffrankaw l-enerġija-) huma komuni. Is-sors tad-dawl tal-iskarigu tal-gass huwa relattivament uniformi, artab, u għandu rendiment għoli tal-kulur, u dan it-tip ta 'dawl huwa wkoll adattat għall-użu fil-lampi tal-mejda.
Sors tad-dawl elettroluminixxenti
Sors tad-dawl elettroluminixxenti huwa sors tad-dawl li jagħmel materja solida jarmu dawl taħt l-azzjoni ta 'kamp elettriku. Jikkonverti l-enerġija elettrika direttament f'enerġija tad-dawl. Lampa LED hija rappreżentant tipiku ta 'sors tad-dawl elettroluminixxenti, LED tfisser dajowd li jarmi d-dawl. Dan it-tip ta 'dawl huwa wkoll aktar adattat għall-użu fil-lampi tal-iskrivanija.
3. Il-lampshade għandu jkopri l-korp tal-lampa
Another point that many consumers and manufacturers have overlooked is whether the lampshade can cover the lamp body. This is actually a very important factor. If the lampshade cannot cover the lamp body, the eyes will be directly exposed to strong light, which will affect the user's vision.
4. Enerġija u fluss luminuż
Għaliex il-qawwa tal-bozza hija daqshekk importanti? Għax jekk il-grad ikun baxx wisq, id-dawl fuq il-ktieb ikun aktar skur, u se jkun diffiċli għall-għajn tal-bniedem biex taqra l-kitba, li tikkawża għeja viżwali, u twassal għal mijopija wara żmien twil. B'mod ġenerali, il-qawwa Huwa meħtieġ li tagħżel aktar minn 16-il watt, iżda l-grad tal-bozza m'għandux ikun għoli wisq. Dawl eċċessiv se jiġi rifless fl-għajnejn tagħna permezz tal-wiċċ tal-karta bajda, li jirriżulta fi dija, u l-istudenti se jkomplu jiċkienu, u jikkawżaw uġigħ fl-għajnejn u uġigħ ta 'ras. 25 watt - 45 watt ta 'luminożità inkandexxenti huwa l-aktar adattat. F'termini ta 'fluss luminuż, għandu jkun akbar minn 1200lm. Xi prodotti foloz u inferjuri jużaw fosfori minflok midja luminuża. Il-qawwa hija kbira ħafna, iżda l-fluss luminuż mhuwiex kwalifikat. Biss b'qawwa xierqa u fluss luminuż jista 'jitqies bħala lampa ta' l-iskrivanija kwalifikata biex tipproteġi l-vista.
5. L-għoli tal-lampa
The height of the lamp is also a factor that cannot be ignored. Usually, when the eyes are 30 cm away from the book, the handwriting can be clearly seen without being overly tired. Based on this calculation, the height of the desk lamp is 40-50 cm away from the writing. This will not only ensure sufficient reading lighting, but also the surrounding environment. brightness. The desk lamp is too low, the range of light exposure is small, and the surrounding is pitch black. Losing the reference object for distant vision will make the eye adjustment systems in a state of tension and compression, which will cause the eyes to feel fatigued quickly and accumulate rapidly, resulting in "light source myopia". The table lamp is too high, even if there is a qualified lampshade, it is useless. The light will also directly shine on our eyes, causing glare, and the strong light at close range will also cause light retention on the retina. Long-term eye muscle tightening is harmful to children. Their eyesight is even worse.
Another thing many consumers don't know is that it's best not to use colored light bulbs. Although colored light bulbs look cool, scientific research has confirmed that our vision is best in white light, so it is generally better to choose incandescent or frosted or LED lights that emit a soft, uniform white light rather than colored bulbs .
