JP3530417B2 - LED light source device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED light source device suitable for performing illumination with light of a plurality of types of wavelengths such as illumination for growing plants.

[0002]

2. Description of the Related Art The use of an LED lamp as a light source for growing plants has been proposed, for example, in Japanese Patent Application Laid-Open No. 8-228599. This publication describes a plurality of LEDs.
It is shown that the lamp is incorporated into a substrate into a unit, a power cord is connected to one end of each unit, and the LED lamp is arranged so as to be inserted into the recess of the acrylic panel.

In some cases, one kind of wavelength is necessary for plant cultivation, but in some cases, plural kinds of wavelengths are necessary. In such a case, it is desirable to prepare a plurality of types of LED units having different emission wavelengths and use them in a mixed manner.

[0004]

When a plurality of types of LED units are selectively used as described above, it is required to easily attach and detach the LED units. Further, when the power supply to be supplied to the LED unit is prepared in accordance with the type of the lamp, it is required to surely connect the LED unit and the power supply suitable for the power supply.

Therefore, one of the objects of the present invention is to facilitate the attachment and detachment of the LED unit. One of the challenges is to prevent connection errors. Another object is to simplify the structure. Further, it is an object to improve the light utilization efficiency of the light source.

[0006]

According to a first aspect of the present invention, there is provided an LED light source device comprising a mother unit and an LED unit detachable from the mother unit, wherein the mother unit is a window. And a pair of connectors arranged to face each other with the LED unit interposed therebetween,
An LED lamp and a pair of connectors corresponding to the pair of connectors are provided on one surface of the circuit board, and the LED unit side connector is attached to the mother unit side connector so that the LED unit is electrically connected to the mother unit. It is characterized in that the LED unit is held by the mother unit at the same time as being electrically connected.

As described in claim 2, the LED light source device of the present invention comprises a mother unit having a window in the center and a plurality of mother units mounted on the mother unit so that the LED lamps arranged on the circuit board face the window. In the LED light source device including an LED unit, the mother unit is configured such that a frame body serving as a skeleton of the mother unit is combined with L-shaped angles, and a part of the L-shaped angles is reflected to reflect light of an LED lamp. It is characterized by being used as a surface.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing an embodiment of the device of the present invention, and FIG. 2 is a circuit diagram thereof. As shown in FIG. 1, the LED light source device 1 includes a mother unit 2 and an LED unit 3 that is detachably attached to the mother unit 2. The mother unit 2 is formed by combining four L-shaped angles 4 made of aluminum to form a frame body 5 that is a skeleton thereof. The frame body 5 has a window 6 for exposing the lamp portion of the LED unit 3 in the center, so that the planar shape thereof is a square shape.

On the peripheral edge of the window 6 of the frame body 5, a standing piece 7 of the L-shaped angle 4 is located facing the rear side. The standing piece 7 functions as a reflecting surface that reflects the light traveling toward the side of the LED lamp 11. The upright piece 7 may be formed with a predetermined inclination so that the tip of the upright piece 7 may fall inside the window 6, and such an inclined surface can enhance the reflection function. A pair of circuit boards 8 and 8 are arranged on the horizontal planes of the angles 4 and 4 located at the opposite portions of the frame body 5, respectively. The circuit board 8 is composed of a printed board in which a circuit pattern for a power supply path is formed on an insulating board such as glass epoxy, and on the upper surface thereof,
One of the connectors 9L, 9L or the connectors 9R, 9R of the connector 9 is mounted along the longitudinal direction of the substrate 8. Connector 9 composed of a pair of connectors 9L and 9R
Have the same shape. Each circuit board 8 is supplied with a plurality of types of power sources from a power source unit as shown in FIG. 3, in this example, three types of power sources VB, VR and VI corresponding to three types of blue, red and infrared LED units. To be done. Then, on each circuit board 8, three circuit patterns connected to one power supply terminal of the three power supplies are formed.

The pair of connectors 9L, 9R has terminals 9B +, 9R +, 9I + connected to one (a positive electrode) of a plurality of power sources arranged in one connector 9L and the other connector 9R.
9B-, 9 connected to the other (negative electrode) of the plurality of power supplies
R- and 9I- are arranged. These terminals are the power supply terminal pair (9B +, 9B-) (9R +,
9R-) (9I +, 9I-).

The LED unit 3 has a plurality of LED lamps 11 of the same type mounted on one surface of a long circuit board 10 having rigidity. Three types of LED lamps 11 are prepared: blue, red, and infrared. By selectively incorporating these into the circuit board 10, three types of LED units 3B, 3R, 3I are prepared. At both ends of the circuit board 10, a pair of left and right connectors 12L, 1
A connector 12 made of 2R is attached. The LED unit 3 can be freely attached to and detached from the mother unit 2 by attaching and detaching the left and right connectors 12L and 12R to and from arbitrary connectors 9L and 9R on the mother unit side. Since the connector 12 is mounted on the same surface as the surface on which the LED lamp 11 is mounted, the thicknesses of the LED unit 3 and the light source device 1 can be made smaller than when mounted on the opposite side. . Also, the left and right connectors 12L, 12R
Since the standing pieces 7, 7 are positioned between the LED lamp 11 and the LED lamp 11, the standing pieces 7, 7 can effectively reflect the light of the LED lamp, and the standing pieces 7, 7 It is also possible to cover the connectors 9 and 12 so that the internal circuit cannot be seen through the window.

As shown in FIG. 2, each LED unit 3 includes a plurality of (18) LEDs arranged in a line on a circuit board.
The lamp 11 is divided into a certain number of blocks connected in series to each other, and each block is connected in parallel, and both ends thereof are connected to the terminals of the connectors 12L and 12R. Here, the number of blocks of the red and infrared LED units 3R and 3I is set to 2, and the number of blocks of the blue LED unit 3B is set to 3. The left and right connectors 12L and 12R are
Similar to the connectors 9L and 9R on the mother unit side, one connector 12L has terminals 12B corresponding to three power sources.
+, 12R +, 12I + are arranged, and the other connector 12
Terminals 12B-, 12R-, and 12I- are arranged at R. These terminals are the power supply terminal pairs (12B +, 12B-) (12R +, 12R-) (12
I +, 12I-). Here, the center terminal is preset for red, and the terminals on both sides thereof are preset for blue and infrared. Then, an appropriate power supply terminal is selected in advance according to the type of the LED lamp 11 mounted on the LED unit 3,
Both ends of blocks connected in parallel are connected only to the selected power supply terminals. That is, the plurality of power supply terminal pairs (12
B +, 12B-) (12R +, 12R-) (12I +,
One of 12I-) is selected according to the type of the LED unit 3 and is connected to the power supply path of the LED lamp 11.

The power supply unit 13 is, as shown in FIG.
The DC power supply circuit 14 and three constant current circuits 15 that supply constant currents corresponding to three types of blue, red, and infrared based on the DC power supply supplied from the DC power supply circuit 14 are provided. Each constant current circuit 15 can set the number of the LED units 3 mounted on the mother unit 2 for each type of the unit 3, and the current value for driving can be switched and output according to the set number. It has become. As the constant current circuit 15, a current output terminal corresponding to the number of the mountable LED units 3 is provided, and this output terminal is selectively switched by a selection circuit, for example, a rotary switch RS or the like, and a predetermined constant current output is provided on the circuit board. 9 can be used. It should be noted that a constant current circuit having another configuration may be used as long as it is possible to switch the setting of the number of mounted pieces and the setting of the desired current accordingly.

The power supply unit 13 may be formed separately from the mother unit 2 and connected to the mother unit 2 via an electric cord, or may be integrally attached to the mother unit 2.

The LED light source device 1 having the above-mentioned configuration is an LED
The LED unit 3 is mounted on the mother unit 2 from the back side so that the lamp 11 faces the window 6.
Here, the LED units 3 are mounted and used in an arbitrary arrangement. For example, a predetermined number (for example, 5) of red LED units 3B are mounted in the center, and infrared and blue L units are provided on both sides thereof.
A predetermined number (for example, one each) of the ED units 3I and 3B can be attached and used. Of course, all the same L
You can also use it with the ED unit 3 attached, 1
It is also possible to mount and use only the LED unit 3 of the book.

The LED unit 3 is electrically connected to the mother unit 2 by inserting the connector 12 into the connector 9 on the mother unit 2 side, and at the same time positioned and held in the mother unit 2. To be done. In this way, the connectors 9 and 12 are connected to the LED unit 3
Since it is also used for holding, it is possible to simplify the structure by sharing the components.

The LED unit 3 mounted on the mother unit 2 is supplied with power through the left and right connectors 12L and 12R by connecting the left and right connectors 12L and 12R to the left and right connectors 9L and 9R of the mother unit. receive. Here, three power supplies V are connected to the mother unit 2 side connector and the LED unit side connector connected thereto.
Although B, VR and VI are supplied, only one preselected power source is supplied to the lamp 11 of the LED unit 3. That is, the LED unit 3 side connector 12
Only one of the three power terminals of the LED lamp 11
According to the type, the LED 11 is connected to both ends of the block, and the remaining two terminals are in an open state. Therefore, the optimum power is automatically supplied only by mounting the LED unit 3. Become. Therefore, even when the LED units 3 are similar in appearance and difficult to distinguish, the LED units 3 can be mounted and used without being aware of the difference, and for example, malfunction due to misuse by the operator (overcurrent supply or insufficient current). ) Can be prevented in advance.

The power supply unit 13 is set according to the type and the number of the LED units 3 mounted on the mother unit 2. For example, if the number of red LED units 3R mounted is 5, the output selection switch RS of the constant current circuit (red) 15R is switched to "scale 5". Infrared, blue L
If the number of mounted ED units is 1, the output selection switch RS of each constant current circuit (infrared) (blue) 15I, 15B is switched to "scale 1". By doing so, it is possible to set an appropriate output state of the power supply according to the type of the LED unit 3 and the number of mounted LED units 3, and it is possible to improve operability.

In the above description, the case where the plurality of LED units 3 are detachably attached to the mother unit 2 has been taken as an example, but when the number of the LED units 3 attached to the mother unit 2 is one. The present invention can also be applied. In addition, one LED unit 3 has the same type of LED
Although the case where the lamp 11 is mounted has been described as an example, the present invention can also be applied to a case where a plurality of types of LED lamps are mixed in the LED unit 3.

[0020]

As described above, according to the present invention, L
The ED unit can be easily attached and detached, and the attachment / detachment structure can be simplified. Further, it is possible to reduce the thickness of the unit and the light source device and improve the light utilization efficiency.

[Brief description of drawings]

FIG. 1 shows an embodiment of the device of the present invention (viewed from the back side).
It is a perspective view.

FIG. 2 is a circuit diagram of the same embodiment.

FIG. 3 is a circuit diagram of the power supply unit of the same embodiment.

[Explanation of symbols] 1 LED light source device 2 mother unit 3 LED unit 9 connectors 11 LED lamp 12 connectors 13 power supply unit 15 constant current circuit

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-6-60708 (JP, A) JP-A-8-228599 (JP, A) JP-A-60-148001 (JP, A) JP-A-9- 259624 (JP, A) Actual Kaihei 3-112744 (JP, U) Actual Kaihei 4-123841 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F21V 19/00 330 F21V 19/00 H01L 33/00

Claims (2)

(57) [Claims] 1. An LED light source device comprising a mother unit and an LED unit that is detachable from the mother unit, wherein the mother unit includes a pair of connectors arranged to face each other with a window interposed therebetween, and the LED unit comprises a circuit board. An LED lamp and a pair of connectors corresponding to the pair of connectors are provided on one surface, and the LED unit is electrically connected to the mother unit by attaching the LED unit side connector to the mother unit side connector. At the same time, the LED unit is configured to be held by the mother unit.
D light source device. 2. An LED light source device comprising a mother unit having a window in the center and a plurality of LED units mounted on the mother unit so that LED lamps arranged on a circuit board face the window, the mother unit comprising:
The frame that is the frame is constructed by combining L-shaped angles, and a part of the L-shaped angles is LE.
An LED light source device characterized by being used as a reflecting surface for reflecting the light of a D lamp.