Projection bulb purchase maintenance and repair - android - Phones Developers

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Like projectors, projection bulbs vary widely. From the price point of view, the gap between hundreds of yuan and tens of thousands of yuan is wide; from the brand point of view, Osram, Philips, Epson and other brand bulbs are dazzling; from the bulb type, it can be divided into metal halide lamps, ultra-high pressure mercury Lights, etc... There is so much knowledge about the projection bulb, let alone the average consumer, even when the author just touched it, it was also a fog-projection bulb construction analysis:
Since Edison invented the light bulb in 1879, the light bulb has gone through more than a hundred years, and the projection bulb has been a tiny branch for decades. In fact, the core technology of the current projection bulb is still in the hands of some Japanese companies. At present, our common light bulb brands are mainly Philips (model: UHP), Epson (model: UHE), OSRAM (OSRAM model: VIP), Matsushita (model: UHM), Japan Uchiwang (USHIO model: UMPRD/UMVRD/NSH ), Japan Phoenix (PHOENIX model: SHP), American singularity (GE model: SHL).
Then, for the average consumer, how to choose the projection bulb, how to maintain it, how to maintain it, how to replace it? Below, the author comprehensively analyzes all aspects of the projection bulb from multiple angles. I hope that I can provide some help for you to choose the right product.
NEC NP63+ projector to change the bulb:
Anyone who knows the projector knows that the projector bulb is the only consumable of the projector. It is the same as the printer's ink cartridge. It belongs to the consumables and has a certain service life. When it is used up, it has to be updated, which requires a secondary cost. The life of a projection bulb is mostly 2000 hours, and the life of a relatively high bulb is 6000 hours, but few machines will be equipped with such a long-life bulb.
The performance of the projector's lamp consumption is that after the lamp's nominal life has been used for more than half of the time, its brightness will drop significantly, and the projected picture will be gray and bounce, which will affect the viewing effect. At present, there are many types of projection bulbs. Different bulbs have different characteristics. Familiar with all kinds of bulbs, it is very helpful for scientifically purchasing machines and identifying true and false bulbs. However, not every projector user knows this knowledge well. Some users think that the higher the brightness of the light bulb, the better. Some people think that it is better to choose the right type. Even some users think that the more expensive the light bulb, the better, or the more The cheaper the more affordable, in fact, these kinds of ideas are one-sided, even wrong. In fact, we must choose the type of projector to use, and then choose the projector bulb that suits your needs according to your needs and the environment.
Projector bulb type and characteristics analysis:
At present, the projector bulbs on the market mainly include two types of ultra-high pressure mercury bulbs and metal halogen bulbs. The UHE, UHP and UMPRD bulbs we usually see are divided into different brands. For example, UHE is the projector lamp model of Eposn, UHP is the projector bulb brand of Philips (PHILIPS), UMPRD/UMVRD/NSH It is the bulb model of Uchiha, Japan, SHP is the bulb model of Japan Phoenix, SHL is the singular bulb model of the United States, and the VIP is the bulb model of Osram of Germany. Among these models, some are metal halide bulbs, named after the bulbs are filled with metal halides, and more are ultra-high pressure mercury bulbs. As the name implies, the bulbs are filled with high-pressure mercury. Among the many types of bulbs, UHE bulbs, UHP bulbs and metal halide bulbs are the most used. UHE and UHP are ultra-high pressure mercury bulbs.
Epson EH-TW5500 Projector Bulb:
UHE bulbs and UHP bulbs with ultra-high pressure mercury filling technology are often referred to as cold light bulbs because of their low power consumption and low heat generation. The current mainstream bulb type is cold light bulb. The advantage of the cold light source bulb is very obvious, because its power consumption is low, the heat is small, and the temperature rise of the projector is relatively low, so it is suitable for the projector to work for a long time, and the performance curve of the bulb is smooth and long. The use of brightness reduction is not as obvious.
UHE bulbs are widely used in mid-range projectors. They have the advantages of moderate price, rich variety, long life, generally more than 3,000 hours, and almost no attenuation before 2000 hours of use. UHP bulbs are also a mainstream projector bulb type. They are also cold light source type bulbs. They are used longer than UHE and can be used normally for 4000 hours to 5000 hours, and the longest is even nominally 12,000 hours. The brightness attenuation is very small, but its patented technology is monopolized by Philips, so the price is relatively high, generally more than 3,000 yuan, generally used in high-end projectors. One feature of UHP bulbs is that when depleted, the bulb is extinguished immediately.
flash bulb:
Metal halide lamps are not cold light sources, they generate warm light, require more power to produce the same brightness as cold light bulbs, and have a shorter life span and a greater brightness decay. Generally, after 1000 hours, the brightness is probably only new bulbs. Half of it. And it generates a large amount of heat, which makes the temperature of the whole projector higher, and the heat dissipation system of the projector is also relatively high, so it is not suitable for long-time projection use. Unlike UHP lamps, metal halide lamp failure is extinguished instantly, but gradually extinguished.
It is important to note that the bulbs of different projectors are generally not universal, so be sure to carefully check which type of bulbs the projector uses when purchasing. Although buying a light bulb can't just look at the type, but it doesn't work without looking at the type.
In addition, there is a rookie in the projector bulb family - the neon light. Xenon lamp is a kind of light source that uses the arc generated by the discharge between positive and negative electrodes. Due to its high technical content and high price, it is currently only used in high-end projectors. Since the spectrum of the xenon lamp is closest to natural light, it can provide superior color than other light sources. Compared with UHP bulbs, xenon lamps have the advantage of being able to switch at any time, and can be turned on again immediately after the xenon lamp is turned off, which was not possible with other projector bulbs. Xenon lamps are a promising source of light, and as technology advances and matures, it will be universally applied to a variety of projectors.
Looking at the projection bulb from the use environment:
The projection principle of the projector is to use the light bulb in the projector to generate strong light to project the signal onto a large screen with a long distance. The projection effect is not only related to the performance of the projector, but also the environment in which the projector is used. Very big relationship. Obviously, the effect of projection in a high-brightness environment is much worse than in a darker environment. The higher the brightness of the environment, the farther the projection distance, and the larger the projection screen, the higher the brightness. On the contrary, if the ambient brightness is dark, the projection distance is relatively close, and the projection screen is small, only the lower brightness is required. Just fine. The brightness of the projector is determined by the light bulb. It can be said that in the projector, the light bulb dominates everything. A high-end projector, if the brightness of the bulb is not enough, can not get a good projection effect.
For example, the use in a small conference room, the space is small, the projection screen is not too large, the brightness requirements in this environment is not very high, currently generally choose 2000 lumens or so can easily meet, ordinary metal halogen bulbs This brightness can be achieved. If it is used in a relatively large conference hall, the projection distance is generally far, and the projection screen is relatively large. Such users also require higher brightness and contrast when purchasing the bulb. We recommend to purchase the mainstream 3000. Fluorescent light bulbs, such users can only choose the UHE or UHP of the cold light source type, as well as UMPRD, SAP, etc. when purchasing the bulb.
Looking at the projection of the projection bulb from the cost and frequency of use:
Different bulb prices are different. Metal halide bulbs are cheaper than normal. Generally, as long as 1000 yuan to 2,000 yuan, UHE bulbs are generally between 2,000 yuan and 4,000 yuan. UHP bulbs generally have a long service life of 4,000. Above yuan, some even above 8,000 yuan. The cost of a light bulb is about 30% of the projector, so which type of light bulb to buy depends on the frequency of use of the projector, so that it does not waste:
If the frequency of use is not high and the use time is not long, you can choose a metal halogen bulb with a short life and low price. Its 2000-hour service life is enough for users who are not using it for a long time. For large and medium-sized enterprises and home users, the use of more frequent, and long-term use, it is best to use UHE, UHP cold light bulbs with small brightness decay and long life, these bulbs can not only ensure that the projector works for a long time, It also provides high brightness and contrast to meet the user's need for projection on large screens and long distances. If the user who uses the projector for a long time also chooses a metal halogen bulb, although the price of the bulb is relatively cheap, the cost of frequency replacement is also high, so it is recommended that users who use the projector for a long time choose a cold light source with a long life. light bulb.
In addition, it should be noted that when buying a light bulb, do not choose a brand-name inferior product because it is cheap, because the light bulb is working in a high temperature and high pressure environment. If the quality is not good, the bulb may burst and explode.
Projection bulb safety precautions:
The projector bulb has always been a delicate feeling. After all, the price is not low. If it is used improperly, it will cause the bulb to burst, explode and even damage the entire projector. First of all, for a projector using a metal halide bulb, it is strictly prohibited to move it when it is turned on. Because the halogen bulb is in the state of lighting, the temperature is thousands of degrees, the filament is in a semi-molten state, and the filament is likely to cause the filament to be moved. Disconnected, the bulb bursts. Secondly, the projector should be switched on and off at least for about 5 minutes. Inappropriate frequent switching may cause the projector to overheat and cause the bulb to explode. Also, when the projector is turned off, it must wait for the cooling fan to stop running, and then turn off the power switch. Otherwise, the lamp will explode because the projector cannot dissipate heat in time.
Since the projection lamp market is not as expensive as the printing consumables market, the price of the GM is 2,000 yuan, which is undoubtedly a major factor hindering the popularity of projectors. Monopoly is high price, the low price of projection bulbs is expected to be difficult to achieve. Only by waiting for the presence of conscientious and powerful manufacturers can greatly reduce the price of light bulbs. Fortunately, some manufacturers have begun such an attempt to buy a light bulb or a light bulb. Although this method is also for profit, the purchase of a light bulb alone is undoubtedly a saving for the consumer. The practices of these vendors are worthy of recognition. In addition, it is also recommended that friends should purchase the projector in the future, and add the condition of adding one or two light bulbs together to negotiate the price, which should be more favorable.