CN100472784C - Light-emitting diode module and light-emitting diode bulb made of the same - Google Patents
Light-emitting diode module and light-emitting diode bulb made of the same Download PDFInfo
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- CN100472784C CN100472784C CNB2004100522188A CN200410052218A CN100472784C CN 100472784 C CN100472784 C CN 100472784C CN B2004100522188 A CNB2004100522188 A CN B2004100522188A CN 200410052218 A CN200410052218 A CN 200410052218A CN 100472784 C CN100472784 C CN 100472784C
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- emitting diode
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Abstract
A LED module is prepared by a dozens of LED chips to intensify its luminous effect and lamp bulb prepared by said module is featured as adding ceramic heat radiating component with perfect heat radiation property and excellent insulation effect on normal lamp head; sticking LED module closely to said ceramic heat radiation component for carrying out heat radiation of LED module effectively; enabling to apply parallel, series or parallel first then series connection between LED chips in LED module.
Description
Technical field
The present invention relates to illuminating device, more particularly, relate to a kind of light-emitting diode (LED) module and with its light emitting diode bulb of making.
Background technology
Traditional illuminating lamp has incandescent lamp, fluorescent lamp etc., and the work of these lamps is generally 110V or 220V, has characteristics such as power consumption is big, light is dazzling a bit, the life-span is not long.Because LED (light-emitting diode) can work under lower voltage, and its power consumption is little, the life-span is long, so available a plurality of LED is combined into an illuminating lamp.
But, in the existing LED Assembled lamp, normally adopting diameter is bullet cut encapsulated LED about 5mm, its volume ratio LED wafer is much bigger, and (size of LED wafer is by being 12mil*12mil, suitable 0.3mm*0.3mm, its thickness is then littler), the LED number that can put in an Assembled lamp is more limited; In addition, the luminosity of LED is directly proportional with the electric current that flows through usually, and caloric value then can increase along with the increase of electric current, owing to be subjected to the restriction of radiating condition, the number of LED can not be too many, and electric current can not be excessive, otherwise the temperature during its work can cause LED to damage.
Owing to be subjected to the restriction of above-mentioned size, operating current and radiating condition; usually have only several in the common LED Assembled lamp or tens LED, its illumination effect is not ideal enough, and usually also needs to dispose reduction voltage circuit and come to provide suitable operating voltage for it; overall cost is higher, and volume is bigger.
Summary of the invention
Fall at the above-mentioned of prior art, the present invention will solve existing light emitting diode bulb because the light-emitting diode number that produced by the radiating condition restriction is limited, illumination effect is not ideal enough, need dispose problem such as corresponding reduction voltage circuit.
For solving the problems of the technologies described above, first-selection of the present invention provides a kind of light-emitting diode (LED) module, comprises circuit board and is contained in a plurality of luminescent devices on the described circuit board; Wherein, described luminescent device is that described each LED wafer is welded on the described circuit board not with the LED wafer of shell; Also be laid with the printing opacity colloid that one deck is used for fixing and protects described each LED wafer at described circuit board surface.
In the light-emitting diode (LED) module of the present invention, also can set up a heat dissipation metal plate, the back side of described sheet metal and described circuit board is close to.A plurality of LED wafer in the described light-emitting diode (LED) module can be by multiple mode parallel connection, series connection or and string mixing connection.
The present invention also provides a kind of usefulness light emitting diode bulb that above-mentioned light-emitting diode (LED) module is made, comprising being used to introduce the lamp holder of power supply and the light-emitting diode (LED) module that is electrically connected with described lamp holder; Also comprise the heat sink of being close to described light-emitting diode (LED) module, described heat sink is contained in the bottom of described lamp holder, and the lead through passing described heat sink between described lamp holder and the light-emitting diode (LED) module is electrically connected.
In the light emitting diode bulb of the present invention, described lamp holder is preferably standard lamp head, and described heat sink is preferably ceramic heat-dissipating spare, and the top of described ceramic heat-dissipating spare is connected with the bottom of described lamp holder, and the bottom then is close to described light-emitting diode (LED) module.Preferably also set up a transparent lamp shade, described lampshade is contained in the bottom of described heat sink, and described light-emitting diode (LED) module is covered on its inside.The profile of described lampshade can be identical with the ordinary incandescent lamp profile; Also can be spheroidal, oval sphere, cuboid or diamond; Also can coat non-light transmissive material, make the illumination effect of lampshade be numeral, letter or literal shape in the appropriate location of described lampshade.
In the light emitting diode bulb of the present invention, also protective circuit be can set up, current-limiting circuit and antistatic circuit comprised; Described protective circuit is located on the block protection circuit board, and described protective circuit plate is loaded in the space between described lamp holder and the heat sink.
From such scheme as can be seen, the light-emitting diode (LED) module that a kind of volume is small and exquisite, the density of arranging is higher is provided among the present invention, and provide a kind of usefulness bulb that this module is made, wherein on the basis of normal lamp holder, set up heat dispersion good, insulation effect and lower-cost ceramic heat-dissipating spare arranged, and light-emitting diode (LED) module and this ceramic heat-dissipating spare be close to, thereby can carry out good heat radiation to light-emitting diode (LED) module, therefore, the dozens of light-emitting diode can be set, to strengthen its illumination effect in this light-emitting diode (LED) module; In addition, can connect mutually between these the light-emitting diode, perhaps first parallel connection is connected again, if the work pressure drop sum of all series diodes slightly equals the civil power alternating voltage, then civil power can be exchanged and directly put on this light-emitting diode (LED) module, thereby can save reduction voltage circuit, to reach the purpose that reduces cost.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the schematic appearance of LED bulb in the one embodiment of the invention;
Fig. 2 is the decomposing schematic representation of the bulb of LED shown in Fig. 1;
Fig. 3 is the center line cutaway view of the bulb of LED shown in Fig. 1;
Fig. 4 is the design sketch of looking up after the transparent lamp shade of the bulb of LED shown in Fig. 1 is removed;
Be illustrated in figure 5 as the electrical connection schematic diagram between the LED shown in Fig. 4;
Fig. 6 is the upward view of LED bulb in another embodiment of the present invention.
Embodiment
A preferred embodiment of the present invention as shown in Figures 1 to 4, as can be seen from the figure, the transparent lamp shade 13 that this LED bulb is used to introduce the standard lamp head 11 of power supply, the ceramic heat-dissipating spare 12 that is connected with lamp holder and is connected with ceramic heat-dissipating spare.Wherein, heat sink is connected with lamp holder by helicitic texture, and lampshade also is connected with heat sink by helicitic texture, certainly, also can connect by buckle structure between them.
The luminous element of this LED bulb is a led module 14, comprises aluminium flake 141 and a circuit board 142 in this led module, and the top of aluminium flake and the bottom of ceramic heat-dissipating spare are close to, and the bottom then is close to circuit board, thereby can strengthen radiating effect.
As can be seen from Figure 4, on the circuit board 142 of led module 14, be provided with a plurality of LED143, they all are small-sized LED wafer, and volume is little, and illumination effect is good.
As can be seen from Figure 3, the lead through passing heat sink 12 15 is realized being electrically connected between lamp holder 11 and the led module 14.As shown in Figure 5, when specifically implementing, a plurality of LED in the led module preferably take following connected mode: one or more branch road is set, and parallel with one another on circuit between each many branch road, be connected to the common source line that is used to introduce working power; A plurality of lamp groups are arranged, series connection successively between each lamp group in each bar branch road; In each lamp group, be provided with two LED, parallel with one another on circuit between these two LED.
As can be seen from Figure 5, excessive in order to prevent electric current, wherein also be serially connected with current-limiting resistance R1, certainly, can also adopt other current-limiting circuits; In addition, at white light, pure green, purple light, and blue-ray LED easily by the situation of electrostatic damage, wherein also and meet a general-purpose diode D1, for example model is the diode of 1N4001,1N4002 etc.Because this bulb can directly be connected with alternating current circuit, in order to strengthen illumination effect, also can set up full-wave rectifying circuit.Aforementioned protective circuit and full-wave rectifying circuit can be located on the block protection circuit board (not drawing in the drawings), and this protective circuit plate can be loaded in the space between lamp holder and the heat sink.
In the above-described embodiments, the profile of lampshade is identical with the ordinary incandescent lamp profile, and available transparent plastic or glass are made.According to needs attractive in appearance, this lampshade 13 also can be that spheroidal, oval sphere, cuboid, diamond or other have the profile of aesthetic.In addition, as shown in Figure 6, also can coat non-light transmissive material in the appropriate location of lampshade, make the illumination effect of lampshade be numeral, letter or literal shape, the illumination effect among the figure is alphabetical A, can also comprise digital 0-9, letter A-Z, wait for, get several moneys wherein, can the composite door trade mark, bar signboard etc.
Claims (10)
1, a kind of light-emitting diode (LED) module comprises circuit board and is contained in a plurality of luminescent devices on the described circuit board; It is characterized in that,
Described luminescent device is that described each LED wafer is welded on the described circuit board not with the LED wafer of shell; Also be laid with the printing opacity colloid that one deck is used for fixing and protects described each LED wafer at described circuit board surface.
2, light-emitting diode (LED) module according to claim 1 is characterized in that, wherein also comprises a heat dissipation metal plate, and the back side of described sheet metal and described circuit board is close to.
3, light-emitting diode (LED) module according to claim 2, it is characterized in that, a plurality of LED wafer in the described light-emitting diode (LED) module are formed one or more branch road, parallel with one another on circuit between described each many branch road, be connected to the common source line that is used to introduce working power;
In each bar branch road, comprise a plurality of lamp groups, series connection successively between described a plurality of lamp groups;
In each lamp group, comprise at least two LED wafer, parallel with one another on circuit between described each LED wafer.
4, light-emitting diode (LED) module according to claim 3 is characterized in that, is provided with 1-4 LED wafer on the circuit board of each square centimeter.
5, a kind ofly it is characterized in that, comprise being used to introduce the lamp holder of power supply and the light-emitting diode (LED) module that is electrically connected with described lamp holder with the light emitting diode bulb that light-emitting diode (LED) module is made described in each among the claim 1-4; Also comprise the heat sink of being close to described light-emitting diode (LED) module, described heat sink is contained in the bottom of described lamp holder, and the lead through passing described heat sink between described lamp holder and the light-emitting diode (LED) module is electrically connected.
6, light emitting diode bulb according to claim 5, it is characterized in that described lamp holder is a standard lamp head, described heat sink is a ceramic heat-dissipating spare, the top of described ceramic heat-dissipating spare is connected with the bottom of described lamp holder, and the bottom then is close to described light-emitting diode (LED) module.
7, light emitting diode bulb according to claim 6 is characterized in that, also comprises a transparent lamp shade, and described lampshade is contained in the bottom of described heat sink, and described light-emitting diode (LED) module is covered on its inside.
8, light emitting diode bulb according to claim 7 is characterized in that, the profile of described lampshade is identical with the ordinary incandescent lamp profile, perhaps is spheroidal, oval sphere, cuboid or diamond.
9, light emitting diode bulb according to claim 7 is characterized in that, the appropriate location of described lampshade scribbles non-light transmissive material, makes the illumination effect of lampshade be numeral, letter or literal shape.
10, according to each described light emitting diode bulb in the claim 5, it is characterized in that, wherein also comprise protective circuit, comprise current-limiting circuit and antistatic circuit; Described protective circuit is located on the block protection circuit board, and described protective circuit plate is loaded in the space between described lamp holder and the heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100522188A CN100472784C (en) | 2004-11-12 | 2004-11-12 | Light-emitting diode module and light-emitting diode bulb made of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100522188A CN100472784C (en) | 2004-11-12 | 2004-11-12 | Light-emitting diode module and light-emitting diode bulb made of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1773702A CN1773702A (en) | 2006-05-17 |
| CN100472784C true CN100472784C (en) | 2009-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100522188A Expired - Fee Related CN100472784C (en) | 2004-11-12 | 2004-11-12 | Light-emitting diode module and light-emitting diode bulb made of the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100472784C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI392826B (en) * | 2010-08-02 | 2013-04-11 | Foxsemicon Integrated Tech Inc | Led bulb |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8545033B2 (en) | 2009-05-28 | 2013-10-01 | Koninklijke Philips N.V. | Illumination device with an envelope enclosing a light source |
| CN106322150B (en) * | 2016-08-23 | 2019-12-17 | 厦门市朗星节能照明股份有限公司 | Spherical bulb capable of displaying characters |
-
2004
- 2004-11-12 CN CNB2004100522188A patent/CN100472784C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI392826B (en) * | 2010-08-02 | 2013-04-11 | Foxsemicon Integrated Tech Inc | Led bulb |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1773702A (en) | 2006-05-17 |
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Granted publication date: 20090325 Termination date: 20131112 |