Features of LED table lamps

The choice of a table lamp must be made taking into account a number of factors, since the equipment affects comfortable work. It is especially important to choose a high-quality model for those who spend a lot of time at their desk. If a lamp is needed for a child, then any mistakes and miscalculations are unacceptable, as this can worsen vision.

Futuristic xiaomi mi smart led lamp

What is LED Table Light

LED is a semiconductor light source. It emits light when electric current passes through it. Electrons in a semiconductor recombine with electron holes, then releasing energy in the form of photons. This is called electroluminescence.

The color of the glow is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is produced by the interaction of multiple semiconductors or a layer of light-emitting phosphor on a semiconductor device.

It is worth considering that a desktop device, even based on super-bright diodes, is an additional source. It should not act as the main light source in any way. For complete lighting, it is worth using high-quality LED lamps for interior lighting or lamps built into the wall.

Review of the best manufacturers

Among the manufacturers of LED lamps there are many worthy companies that have been working conscientiously in this market for many years. Their distinctive feature is the provision of a product warranty for a period of 2 to 5 years.

True, among the new companies there are also those whose guarantee does not cover all types of breakdowns. Therefore, before purchasing, you should clarify this point in advance.

Foreigners on the Russian market

Among foreigners, Belgian lighting products Massive, Japanese table lamps from the Supra brand and lamps from the Austrian company Globo have a good reputation. Consumers call brands such as Philips, Maxus, Osram AG and Xiaomi the best. Let's talk about them in more detail.

Brand #1 - Dutch company Philips

The Dutch company is rightly called the leader in the segment for the production of LED products. Philips has been producing lighting products for the general public for over 120 years.

Among the huge assortment, a separate direction is allocated for the development and implementation of the latest technologies in the manufacture of LED devices. The company uses an innovative approach to each product item, focusing on its availability.

The catalog contains a whole range of universal light bulbs with E27 socket, suitable for most table lamps. As well as original models with built-in LEDs and filaments

Where and how it is used

Table lamps with super-bright diodes are designed to illuminate the surface of the desktop. LED desk lamps for schoolchildren are one of the most common types. In addition, there are many varieties of LED table lamps for desks, classrooms, and offices. Devices are also necessary for sewing and knitting.

A wide variety of different table lamps allows you to use them as interior decoration.

Safety to use

Even such a common household appliance as a table lamp can pose a great threat if it is not made properly. Before purchasing, you should carefully inspect the product - check the wire, socket, switch. The seller must show the appropriate safety certificate. Even a light bulb in a table lamp can affect the health of a child’s eyes, either stimulating or reducing their performance. Therefore, you should not save money and buy the first lamp you come across. First you need to carefully study all the characteristics of the product. Then it will last a long time and will contribute to better learning.

Design Features

LED lamp circuit IC1 BP5041; AC/DC converter.

The converter is connected to a network with a voltage of 220 V. At the output, it provides a voltage of 5 V, taking into account a current of 100 mA.

The connection to the network occurs through a rectifier made of a super-bright diode D1, as well as a capacitor C3. Capacitor C2 and resistor R1 are responsible for eliminating impulse noise.

Full protection of the device is provided by fuse F1. Its nominal value should not be higher than that indicated in the diagram. Smoothing of voltage ripple at the output is performed by capacitor C3. The output voltage has no galvanic isolation from the network. It requires strict adherence to safety precautions during its production. In this scheme its presence is not necessary.

Capacitor C2 must be made of ceramic or film materials. For capacitors C2 and C3, the operating voltage must be no less than 450 V. The resistance of resistor R1 must be in the range from 10 to 20 Ohms, which ensures normal operation of the converter.

The operation of such a converter makes it possible not to use a step-down transformer. This significantly reduces the size of the entire device.

One of the characteristic features of this circuit is the presence of a built-in inductive coil. This allows you to significantly reduce the size of the circuit board, as well as the number of attached parts.

Any diode D1 with a reverse voltage of at least 800 V and a rectifying current of approximately 500 mA is suitable. For example, a 1N4007 diode is suitable for this.

Types of table lamp designs can be divided into two groups:

Classic. They are characterized by a flat platform base. This type of device has a flexible part from the base to the lampshade.
Clamp. These are LED table lamps that are mounted to the table or mounted on the edge of the tabletop thanks to a screw clamp. This type has hinged structures that adjust the position of the device.

Here is an example of calculations

Let's say you have a children's room measuring 10 square meters and three meters high. In this case, we take the norm for children’s rooms - 200 lm/m2 and the coefficient for ceilings from 2.7 to 3 meters - 1.2.

We multiply these indicators: 10m2 x 200 lm/m2 x 1.2 = 2400 lm.

It turns out that for this nursery you need a luminous flux of 2400 lm. Based on this indicator, you can select the number and type of lamps by referring to our first table. This is a very convenient formula because it allows you to quickly and easily obtain indicators for each room.

Technical characteristics of the LED table lamp

The characteristics largely depend on the model and manufacturer.

The supply voltage is on average from 12 to 220 V. Most often, a 12 V DC network is used, but thanks to powerful drivers it is possible to use the lamp in an alternating voltage of 220 V.
Power consumption ranges from 3 to 28 W. The power may not differ much from, for example, bathroom fixtures.
The luminous flux varies from 70 to 85 lm/W. For luminaires for suspended ceilings, this figure will be higher and will be 90 lm/W. For every watt, the diode produces almost 10 times more luminous flux than a conventional incandescent lamp.
Colorful temperature. Its indicator varies from 2700 K to 7000 K. Thanks to LED crystals, the following lighting color options are available: warm white (2700-3200 K), daylight (3500-5000 K) and cool white (5000-7000 K). This characteristic is displayed not only on the packaging, but also on the lamp itself.
Light is emitted in one direction and in a small sector. For magnification, frosted polycarbonate diffusers are used. You can also use several diodes aimed at different angles.
Brightness adjustment is adjusted using a dimmer (dimmer), if available. It produces power in the form of pulses. The lower the pulse frequency, the dimmer the diode; the higher it is, the brighter it is. The blinking frequency is not noticeable as it is around 200-300 kHz.
LED light sources can operate at temperatures from -40 to +40. This makes it possible to use them instead of other, more harmful, sodium, gas-discharge or mercury lamps.
Basically, the protection level is IP 54 - a high level of protection against dust, as well as protection against rain and splashes.

Editor's Choice

Mi LED Desk Lamp EU MJTD01YL (from 2.2 thousand rubles)

Mi LED Desk Lamp EU MJTD01YL.
Photo: yandex.market.ru A laconic device in high-tech style that can fit into any interior, except perhaps for an overly classic one. It has the highest illumination levels, which exceeds 1000 lux - you can read more about this characteristic below in our guide to choosing devices. All thanks to the built-in LED lamp. The manufacturer has installed a mechanism that prevents flickering: few people can visually notice these interruptions, however, it has been proven that they affect human vision. The lamp has four built-in lighting modes: they consist of changing the color temperature. One eliminates harmful blue lighting from devices, the other reduces eye fatigue, the third increases alertness, and the last simply provides soft diffused light. The lighting intensity is controlled by a rotary switch at the bottom. The service life of the device is more than 25 thousand hours. However, after that you will have to dispose of it, since you are unlikely to find it on sale and will be able to replace burnt-out LEDs yourself.

Characteristics

LED lamp	built-in
Lamp and fittings	made of plastic
Height	45 cm
Works with smart home	Yes
Dimmer	There is

Advantages and disadvantages

Integrates with smart home services

The lighting element cannot be replaced

In Home SSO-02CH (from 700 rubles)

In Home SSO-02CH. Photo: yandex.market.ru

A mid-price table lamp from a major manufacturer of lighting fixtures for home use. Available only in black. Let us immediately draw your attention to the disadvantage of the glossy finish: it will collect dust, so if you are not a fan of wet cleaning, then consider purchasing another model. For everyone else, we'll tell you what's good about this sample. Firstly, it is high and powerful - LEDs “fry” up to 10 W, and this is a very high figure. Fortunately, the power is regulated by a touch dimmer, which is built into the stand of the table lamp. It is bought not only for written work at the table, but also by various craftsmen, for example, seamstresses. The manufacturer indicates the degree of moisture protection on the packaging according to the IP20 standard. This is a low indicator, which essentially only means impermeability to drops and splashes. The device has a long cord of one and a half meters.

Characteristics

LED lamp	built-in
Lamp and fittings	made of plastic
Height	60 cm
Control	sensory

Advantages and disadvantages

Folds compactly

You can’t turn it off without re-pressing all modes

ERA N-121-E27-40W-BK (from 800 rubles)

ERA N-121-E27-40W-BK. Photo: yandex.market.ru

In 2022, lighting devices of this form factor look outlandish, and not many manufacturers dare to produce such. Although such table lamps have a considerable circle of fans. First of all, these are people who work a lot with various kinds of drawings. Due to its mechanism and height, the device is perfectly adjustable. By the way, this bending part is called a pantograph. The lamp is attached to the table using a clamp. It is important to understand here that not every table will be convenient for this mechanism - you need a well-protruding edge. Otherwise, any awkward movement will lead to a fall. Hidden inside the lampshade is a standard E27 socket, lamps for which are sold in every hardware store. And what is important, here you are free to choose any one, because the connector is universal: incandescent, halogen, LED. However, keep in mind that the lampshade here is not deep, which means massive lamps will stick out and hit your eyes.

Characteristics

Replacement lamp base	E27
Lamp and fittings	made of metal
Height	85 cm

Advantages and disadvantages

Many possibilities for adjusting the lighting angle

The mount cannot be called universal

What are the types?

By type of destination:

LED desk lamps for work desk;
office LED lamps;
decorative lamps with fastening to the table.

By style:

classic;
modern;
high tech;
loft.

There is a classification based on the type of network connection:

wired;
wireless;
both wired and wireless (2 in 1).

Table lamps can also have two different types of bulbs:

removable;
integrated.

The first type is a ready-made model with already installed super-bright diodes of a given power. If any of the diodes burns out, the entire device will stop functioning.

The second type of light bulb is directly screwed into the socket of the structure itself.

What else do ophthalmologists warn about?

Even a properly selected table lamp will not replace the main lighting for a student. For reading, writing, and drawing, general overhead light is also needed, but its brightness can be relatively low. If the children's lighting is combined, the child's eyes will be less tired when working and doing creative work.

Many people traditionally consider only its power when choosing a lamp. However, today this approach is irrelevant, since in addition to watts, you also need to know lumens - this indicator is not fully understood by all buyers. Let's figure out what we're talking about, how lumens affect efficiency, quality of light, and which lamps should be chosen based on this indicator.

Advantages

Long service life, which can amount to about 100,000 hours of continuous operation.
Economical. LED light sources consume up to 20 times less electricity compared to classic incandescent lamps.
No flicker.
No pulsation.
No glare.
No overheating.
Lack of infrared and ultraviolet radiation.
Low temperature resistance.
Environmental friendliness. These lamps do not contain mercury or other toxic elements.
Focusing. The LED housing can also be designed to focus the light. Classic incandescent and fluorescent sources often require an external reflector to collect light and direct it in a way that is easy to use. More LED bodies require total internal reflection lenses. However, when a large amount of light is required, there are usually quite a few light sources that are difficult to focus or collimate towards the same target, which is not necessary with a single LED table lamp.

Ripple factor

In ordinary lamps, when the brightness changes, pulsations appear with a frequency of 100 Hertz. They are invisible to the eye and quite harmful, deteriorating well-being, performance, headaches, and fatigue. I felt all these symptoms while working in an office with cheap lighting.

Measurements show that there is no ripple when the brightness changes. This is a good result and is rare in lamps.

Flaws

High price.
Manufacturing defect.
Sensitivity to mechanical influences. The vast majority of light bulb types are made from fragile or soft materials. In the event of an impact or fall, the required level of protection is not available.
Sensitivity to tension. Electrical current and service life vary with small changes in applied voltage. Thus, they require a regulated current supply (usually just a series resistor for LED lights).
Blue light pollution. Because ultra-bright cool white LEDs emit proportionately more blue light than conventional outdoor light sources such as high-pressure sodium lamps, Rayleigh scattering is wavelength dependent. This means that these types of LEDs can be more light pollutants than other light sources. The International Dark-Sky Association does not recommend the use of white light sources with a correlated color temperature above 3000 K.
Gradual decrease in efficiency. The efficiency of LEDs decreases in proportion to the increase in electric current. The heating of the luminaires also increases with increasing current, which reduces the life of the diodes themselves. These effects place limitations on the current through the LED under high power conditions.

Creating the right lighting conditions for children and adults when reading

Office workers, schoolchildren or students spend a lot of time at the table, and a comfortable chair and a well-chosen lamp will ensure a comfortable stay at it and will not damage your eyesight.

Optimal reading conditions:

When organizing lighting in a children's room, there must be at least three sources. This is a chandelier on the ceiling, a separate lamp near the bed and a device that illuminates the study space. All elements must have separate switches and be safe to use. It’s good if the electrical wiring is hidden under the decorative trim, this will be an additional guarantee against injury to the child.
The most optimal location for the table is considered to be the area near the window, which is complemented by a separate adjustable lighting fixture. The lamp should be directed at the book, and not scatter light throughout the room. At the same time, its location above the reader should not exceed 50 cm; the higher the light source, the more powerful the lamp should be, and this can affect vision.
A lamp that has an additional decorative function should not have a bright shade color if it is used for reading. Intense shades have a negative effect on visual function, especially for devices in the children's room. You should also avoid drawings on the lampshade; they give off glare and refract the light flow.
The sconce above the bed should be easily adjusted to suit the position of the body, otherwise there will be no pleasure from reading and there will be a serious strain on the eyes, which can be detrimental to vision.
The best place for reading is considered to be a table or a comfortable chair. Spending many hours in bed with a book is not the best for your eyes. The optimal reading time before bed is 20-30 minutes. If you spend more time in bed with a book, it will be tiring not only for the eyes, but for the musculoskeletal system.
The table lamp should be installed depending on the person's working hand. A right-handed person needs light on the left, a left-handed person on the right, this is especially important for lighting a child’s table. In this case, the lampshade of the device should not heat up or melt.

With proper organization of the reading space, you can create optimal conditions for vision. And it is desirable that the lamp has a strictly defined function, and to decorate the room you can use other devices that are not responsible for health. Pay attention to lighting devices that are specifically designed for this - these are office lamps on flexible and height-adjustable rods.

How to choose

The packaging must be undamaged, dry and clean.
Correct spelling of the manufacturer's product name.
Mandatory presence of a barcode and/or QR code.
Availability of instructions and passport.
Availability of all technical characteristics and parameters on the packaging, and/or in the passport, and/or in the instructions.
Choosing a table lamp is quite an important process, since the level of vision depends on it, and LED-based lamps can provide a high-quality level of illumination without harming it.

A high-quality LED lamp is a functional addition to the desktop of both a schoolchild and an office worker, an assistant when reading and working at the computer. Making it possible to save on electricity, such a lamp often becomes a successful element of room design. It really has many advantages that can make life and work more comfortable. That's why it's so important to choose the right lamp.

Type of light bulb for manicure work

To make the light comfortable, it is important to choose the right light bulb. The most popular of them are:

incandescent lamp: no flicker, high color rendering index, low cost;
LED: low power consumption, long service life (50 thousand hours), low body temperature, safe;
luminescent: good light output, long service life up to 15 thousand hours, high energy efficiency.

An incandescent light bulb has a cost advantage, but it can cause eye fatigue, especially when performing gel and acrylic manicures. LED and fluorescent lamps consume energy sparingly, so they are profitable to buy. If you choose the right power, then any lamp will create a luminous flux that is suitable for performing cosmetic procedures, manicures and pedicures.

How to choose an LED light bulb?

More details!

Professional table lamps for nail salons and beauty salons, functional and modern, can be bought in Brille lighting stores, which are located in Kyiv, Kharkov, Poltava, Zaporozhye and other cities of Ukraine. Here you will see how the models work, evaluate their technical capabilities, and select the required power and brightness. You can also order goods in the online store. We offer a convenient payment method and delivery of orders.