KR100910959B1 - Lighting apparatus - Google Patents

Abstract

assignment

To provide an illuminating device capable of illuminating an object under almost uniform illumination and miniaturizing the overall size of the device.

Resolution

A plurality of first light emitting elements 10, a first mounting substrate 12 on which the plurality of first light emitting elements 10 are mounted, a plurality of second light emitting elements 14, and a plurality of second light emitting elements ( 14) is provided with a second mounting substrate 16 on which is mounted, and each of the plurality of first and second light emitting elements 10, 14 is composed of a side view type chip LED. The plurality of first and second light emitting elements 10, 14 are mounted side by side at one end of the first and second mounting substrates 12, 16, respectively, with their light emitting portions 18, 20 facing outwards. The first and second mounting substrates 12, 16 are arranged to face each other, and the plurality of first and second light emitting elements 10, 14 are alternately arranged side by side.

Lighting device

Description

Lighting device {LIGHTING APPARATUS}

TECHNICAL FIELD This invention relates to the illuminating device used for illuminating a to-be-tested object, for example in image processing inspection.

Background Art Conventionally, when inspecting the quality of industrial products such as printed wiring boards and semiconductors, for example, defects in soldering, adhesion of foreign matters, printing mistakes such as manufacturing date printed on beverage cans, etc. Image processing inspection using imaging with a camera or the like is performed. In this image processing inspection, an illumination device for illuminating the inspection object arranged in the illumination region is used.

Such a lighting apparatus is provided with the some light emitting element and the mounting board | substrate with which the some light emitting element is mounted (for example, refer patent document 1). The light emitting element is composed of a shell type LED or a chip type LED having a light emitting portion on an upper surface thereof, and the plurality of light emitting elements are arranged in a line at predetermined intervals on one side of the mounting substrate. When a plurality of light emitting elements emit light, the light from the plurality of light emitting elements is irradiated toward the inspected object disposed in the illumination region, whereby the inspected object is illuminated in a line.

Patent Document 1: Japanese Patent Application Laid-Open No. 9-130545

However, in the conventional lighting apparatus as described above, there are the following problems. When the plurality of light emitting elements are mounted on one side of the mounting substrate using the electronic component mounting apparatus (when mounted), the arrangement interval of the plurality of light emitting elements cannot be made very small due to problems on the electronic component mounting apparatus. There exists a problem that the mounting density of a some light emitting element falls and the illumination intensity nonuniformity generate | occur | produces when illuminating an inspection object with the light from a some light emitting element. In order to solve such a problem, for example, when a plurality of light emitting elements are arranged in a plurality of rows (for example, two rows) on one side of a mounting substrate, for example, light emitting elements having a diameter of about 3 mm are used. If it consists of a shell type LED, the magnitude | size of the width direction of a lighting apparatus needs to ensure about 6 mm or more, and there exists a problem that the magnitude | size of the whole apparatus becomes large.

An object of the present invention is to provide an illuminating device capable of illuminating an inspection object with almost uniform illuminance and miniaturizing the size of the entire apparatus.

In the illumination device according to claim 1 of the present invention, a plurality of first light emitting elements, a first mounting substrate on which the plurality of first light emitting elements are mounted, a plurality of second light emitting elements, and the plurality of second light emitting elements And a lighting device unit having a second mounting substrate on which is mounted.

Each of the plurality of first and second light emitting elements of the lighting device unit is constituted of a side view type chip LED having a light emitting surface that emits light in substantially parallel to the mounting surface thereof, and the plurality of first and second light emitting elements. The two light emitting elements are mounted side by side at one end portion on one side of the first and second mounting substrates, with their light emitting portions facing outwards, respectively.

One side of each of the first and second mounting substrates is disposed to face each other, and the plurality of first light emitting elements and the plurality of second light emitting elements are alternately arranged side by side.

In addition, in the illumination device according to claim 2 of the present invention, a plurality of first light emitting elements, a first mounting substrate on which the plurality of first light emitting elements are mounted, a plurality of second light emitting elements, and the plurality of seconds A lighting device unit having a second mounting substrate on which a light emitting element is mounted;

Each of the plurality of first and second light emitting elements of the lighting device unit is constituted of a side view type chip LED having a light emitting surface that emits light in substantially parallel to the mounting surface thereof, and the plurality of first and second light emitting elements. The two light emitting elements are mounted side by side at one end portion on one side of the first and second mounting substrates, with their light emitting portions facing outwards, respectively.

The other surfaces of each of the first and second mounting substrates are disposed to face each other, and the plurality of first light emitting elements and the plurality of second light emitting elements are alternately disposed in directions opposite to each other.

Moreover, in the illuminating device of Claim 3 of this invention, the said illuminating device unit is formed in multiple numbers continuously in the thickness direction, It is characterized by the above-mentioned.

Further, in the lighting apparatus according to claim 4 of the present invention, a plurality of the lighting apparatus units are formed, and the light emitting portions of each of the plurality of first and second light emitting elements are arranged so as to face a specific region. do.

Moreover, in the illuminating device of Claim 5 of this invention, the said light emission part of each of the said 1st and 2nd light emitting element respectively protrudes outward from the one side edge part of the said 1st and 2nd mounting board | substrate, It is characterized by the above-mentioned. do.

Moreover, the illuminating device of Claim 6 of this invention is equipped with the lighting means which has a some light emitting element and the mounting board | substrate with which the said some light emitting element is mounted,

The lighting means is provided in plural arrangements, and each of the plurality of light emitting elements of the lighting means is composed of a side view type chip LED having a light emitting surface that emits light in substantially parallel to the mounting surface thereof, and the plurality of light emitting elements Is mounted side by side at one end of the mounting substrate with its respective light emitting portions facing outward.

Moreover, in the illuminating device of Claim 7 of this invention, the said some lighting means is arrange | positioned so that the said light emission part of each of these some light emitting elements may face a specific area | region, It is characterized by the above-mentioned.

Moreover, in the illuminating device of Claim 8 of this invention, the said light emitting part of each of the said some light emitting element protrudes outward from the one side edge part of the said mounting substrate, It is characterized by the above-mentioned.

In addition, in the lighting apparatus according to claim 9 of the present invention, a mounting member for holding the plurality of lighting means is further provided, and the mounting member is provided with a plurality of mounting recesses, and each of the plurality of mounting recesses. It is characterized in that the other end of the mounting substrate is inserted into the mounting.

According to the illuminating device of the present invention, the plurality of first and second light emitting elements composed of side view type chip LEDs respectively have one end portion on one side of the first and second mounting substrates with their light emitting portions facing outwards. Are mounted side by side, one side of each of the first and second mounting substrates are disposed to face each other, and a plurality of first light emitting elements and a plurality of second light emitting elements are alternately arranged side by side, and thus a plurality of first and second The arrangement interval of the light emitting elements is small, and the plurality of first and second light emitting elements can be arranged in a line with a high mounting density, thereby illuminating the inspection object by light from the plurality of first and second light emitting elements. In this case, unevenness in illuminance can be prevented, and the inspected object can be illuminated with almost uniform illuminance. Moreover, the magnitude | size of the thickness direction of a lighting device unit can be suppressed small, and it becomes possible to reduce the size of the whole lighting device by this. Further, since a plurality of first and second light emitting elements are disposed between the first mounting substrate and the second mounting substrate, a heat dissipation space is formed between the first mounting substrate and the second mounting substrate, and flows through the heat dissipation space. Air can dissipate heat from the plurality of first and second light emitting elements, and it becomes possible to enhance the heat dissipation effect.

Moreover, according to the illuminating device of this invention, the other surface of each of the above-mentioned 1st and 2nd mounting board | substrates is arrange | positioned facing each other, and the direction in which the some 1st light emitting element and the some 2nd light emitting element oppose each other. Since it is alternately arrange | positioned toward, the several 1st and 2nd light emitting element can be arrange | positioned with a high mounting density on a line, and it becomes possible to illuminate a to-be-tested object with substantially uniform illumination. Moreover, the magnitude | size of the thickness direction of a lighting device unit can be suppressed small, and it becomes possible to reduce the size of the whole lighting device by this.

In addition, according to the illuminating device of the present invention, since a plurality of illuminating device units are formed in succession in the thickness direction, the plurality of first and second light emitting elements can be arranged in a plane at a high mounting density, and the inspection object can be arranged. It becomes possible to obtain the illuminating device which can illuminate in plan view with substantially uniform illuminance.

In addition, according to the lighting apparatus of the present invention, a plurality of lighting apparatus units are formed, and the light emitting portions of each of the plurality of first and second light emitting elements are arranged to face a specific region, and thus, a plurality of lighting apparatus units are provided. Light from the first and second light emitting elements is focused on a specific area, thereby making it possible to illuminate the inspection object with a substantially uniform illuminance and a high illuminance.

In addition, according to the lighting apparatus of the present invention, the light emitting portions of the plurality of first and second light emitting elements respectively protrude outward from one end portions of the first and second mounting substrates, and thus, the plurality of first and second light emitting elements. The light from each light emitting portion of the element is not blocked by each one end of the first and second mounting substrates, thereby making it possible to condense the amount of light from the plurality of first and second light emitting elements without waste.

In addition, according to the lighting apparatus of the present invention, a plurality of lighting means are provided, and a plurality of light emitting elements constituted of side view type chip LEDs respectively have one light emitting element facing one side thereof, and one end portion on one side of the mounting substrate. Since it is mounted side by side, the arrangement interval of a plurality of light emitting elements becomes small, and a plurality of light emitting elements can be arranged at a high mounting density on a line, whereby when illuminating the inspection object by light from the plurality of light emitting elements Unevenness in illuminance can be prevented, and the inspected object can be illuminated with almost uniform illuminance. Moreover, the magnitude | size of the thickness direction of a lighting device unit can be suppressed small, and it becomes possible to reduce the size of the whole lighting device by this.

In addition, according to the lighting apparatus of the present invention, since the plurality of lighting means are arranged so that the light emitting portions of each of the plurality of light emitting elements are directed toward the specific region, the light from the plurality of light emitting elements of the respective lighting means is focused on the specific region. This makes it possible to illuminate the inspected object with a substantially uniform illuminance and with a high illuminance.

In addition, according to the lighting apparatus of the present invention, since the light emitting portions of each of the plurality of light emitting elements project outward from one end of the mounting substrate, light from each light emitting portion of the plurality of light emitting elements is directed by one end of the mounting substrate. It is not blocked, and it becomes possible to condense the light quantity of the light from a some light emitting element without waste.

Moreover, since the lighting apparatus of this invention is equipped with the mounting member for holding a some lighting means, it inserts and mounts the other end part of a mounting board in each of the several mounting recessed parts of a mounting member, and it provides a some lighting means. Can be easily arranged and formed as necessary.

EMBODIMENT OF THE INVENTION Hereinafter, various embodiment of the lighting apparatus which concerns on this invention is described with reference to an accompanying drawing.

[First embodiment]

First, the illuminating device of 1st Embodiment is demonstrated with reference to FIGS. 1 is a perspective view showing a lighting device according to a first embodiment of the present invention, FIG. 2 is a view showing one end portion of the lighting device of FIG. 1, and FIG. 3 is a lighting device by the AA line in FIG. 2. It is a schematic sectional drawing of FIG. 4: is a figure which shows the 1st (second) illumination means of FIG.

1 to 4, the illustrated lighting device 2 includes a lighting device unit 8 having first and second lighting means 4, 6. The 1st lighting means 4 is equipped with the 1st light emitting element 10 of several (7 in this embodiment), and the 1st mounting board 12 in which the some 1st light emitting element 10 is mounted, In addition, the second lighting means 6 includes a plurality of second light emitting elements 14 (in this embodiment, seven) and a second mounting substrate 16 on which the plurality of second light emitting elements 14 are mounted. Equipped.

The first and second light emitting elements 10, 14 respectively emit light 18, 20 which emit light substantially parallel to their mounting surfaces (i.e., single-sided surfaces of the first and second mounting substrates 12, 16). It is composed of side view type chip LED with). This light emitting portion 18 (20) is formed on one side of the first (second) light emitting element 10 (14) (see Fig. 4), and the first (second) light emitting element 10 (14). The light from the light emitting portion 18 (20) of the light-emitting portion forms a light distribution enlarged in three-dimensional shape around the optical axis, and the light emitting portion 18 (20) of the first (second) light emitting element 10 (14). Among the light from the light, most of the light is emitted within a predetermined range of solid angles (ie, effective light emission angles) with respect to the optical axis. When a pair of lead frame portions (not shown) are formed on the bottom surface of the first (second) light emitting element 10 (14), and predetermined power is supplied to each of the pair of lead frame portions, The light emitting portion 18 (20) of the first (second) light emitting element 10 (14) emits light. In addition, the height H of the 1st and 2nd light emitting elements 10 (14) is comprised by about 0.4 mm, for example.

The 1st and 2nd mounting board | substrates 12 and 16 are each formed with glass epoxy resin etc., for example, and are comprised by the horizontally long flat plate shape. The sizes of the first and second mounting substrates 12, 16 are configured substantially the same, and their thickness D1 is configured, for example, about 0.5 mm. On one side of the first (second) mounting substrate 12 (16), a wiring pattern (not shown) and a plurality of electrode pad portions 22 (14 in this embodiment) electrically connected to the wiring pattern. 24)) and a pair of electrode terminals (not shown) are formed. As shown in FIG. 4, the some electrode pad part 22 (24) is formed in the one side edge part in the single side | surface of the 1st (2nd) mounting board 12 (16) at predetermined intervals, and is formed. The lead frame portions of the plurality of first (second) light emitting elements 10 (14) are electrically connected to the plurality of electrode pad portions 22 (24) by soldering, respectively. As a result, the plurality of first (second) light emitting elements 10 (14) are configured so that the light emitting portions 18 (20) face the outside (upper side in FIG. 4), and thus the first (second) mounting substrates. It is mounted side by side at an arrangement | positioning interval L1 (for example, about 3.8 mm) at the one side edge part on the single side | surface of 12 (16), and each of the some 1st (2nd) light emitting element 10 (14) The light emitting portion 18 (20) projects outward from one end of the first (second) mounting substrate 12 (16). In addition, one end of a power cable (not shown) extending from a power supply device (not shown) is electrically connected to the pair of electrode terminals, respectively.

The lighting device unit 8 is comprised as follows using the 1st and 2nd lighting means 4 and 6 mentioned above. One side of the first mounting substrate 12 and one side of the second mounting substrate 16 are disposed to face each other, and the first mounting substrate 12 is disposed at a distance L2 in the longitudinal direction with respect to the second mounting substrate 16. (I.e., the distance of about half of the separation distance L1 of the adjacent pair of first or second light emitting elements 10, 14), the plurality of first light emitting elements 10 and the plurality of The two light emitting elements 14 are arranged side by side alternately at an arrangement interval L2 (for example, about 1.9 mm) (see Fig. 2). When disposed in this manner, one end of the first mounting substrate 12 extends outward from the one end of the second mounting substrate 16 by a distance L2, and the other end of the second mounting substrate 16 is the first mounting substrate. The upper surface of each of the plurality of first and second light emitting elements 10 and 14 extends outward from the other end of the second end 12 by a distance L2, and the one side of the second and first mounting substrates 16 and 12 respectively. In this way, the lighting device unit 8 is configured.

In addition, between the first mounting substrate 12 and the second mounting substrate 16, a heat dissipation space 26 having a height corresponding to the height H of the first (second) light emitting element 10 (14) is formed. All. The thickness D2 of the lighting device unit 8 is obtained by adding the height H of the first (second) light emitting element 10 14 and the thickness D1 of the first and second mounting substrates 12, 16 to each other. Size, for example, about 1.4 mm.

The 1st and 2nd illumination means 4 and 6 of the illuminating device unit 8 comprised as mentioned above are made into the following using the attachment member 28 of plurality (two in this embodiment) as follows. It is fixed. The mounting member 28 is formed in a plate shape, and at one end thereof, a pair of mounting recesses 30a and 30b are formed corresponding to the other ends of the first and second mounting substrates 12 and 16, respectively. have. The pair of mounting recesses 30a and 30b extend perpendicularly to one end of the mounting member 28, respectively, and the separation distance between the pair of mounting recesses 30a and 30b is the first mounting substrate 12. ) And the distance between the second mounting substrate 16, that is, substantially the same as the height H of the first (second) light emitting element 10 14, and the width of the mounting recesses 30a and 30b. Silver is substantially equal to or much larger than the thickness D1 of the first (second) mounting substrate 12 (16). The other end of the first mounting substrate 12 is inserted into the mounting concave portion 30a of one of the mounting members 28, and the other end of the second mounting substrate 16 is mounted on the other mounting concave portion ( By inserting into and attaching to 30b), the 1st and 2nd lighting means 4 and 6 are fixed in the state in which it was arrange | positioned as mentioned above.

Next, the illuminating method by the illuminating device 2 of this 1st Embodiment is demonstrated. An object to be inspected (not shown) disposed in an illumination area at one end of the lighting device unit 8, that is, in front of the light emitting portions 18, 20 of each of the plurality of first and second light emitting elements 10, 14. Is arranged, and the predetermined power is supplied to the pair of electrode terminals of the first and second mounting substrates 12 and 16 through the power cable, respectively, and the predetermined power is supplied to the first and second. The plurality of first and second light emitting elements 10 and 14 are respectively supplied through the wiring patterns and the plurality of electrode pad portions 22 and 24 of the mounting substrates 12 and 16, respectively, thereby providing a plurality of first and second components. The light emitting portions 18, 20 of the two light emitting elements 10, 14 emit light. When light is emitted in this manner, light from the light emitting portions 18, 20 of each of the plurality of first and second light emitting elements 10, 14 is irradiated toward the inspected object, whereby the inspected object is illuminated in a line.

In the illuminating device 2 of the first embodiment, since the arrangement interval L2 of the plurality of first and second light emitting elements 10 and 14 can be reduced, the plurality of first and second light emitting elements 10, It is possible to increase the mounting density of 14), thereby preventing occurrence of uneven illuminance when illuminating the inspected object and illuminating the inspected object with almost uniform illuminance.

In addition, as described above, each of the light emitting portions 18, 20 of the plurality of first and second light emitting elements 10, 14 is respectively formed from one end of the first and second mounting substrates 12, 16. Since it protrudes outward, the light from each light emitting part 18,20 of the some 1st and 2nd light emitting element 10,14 is each one edge part of the 1st and 2nd mounting board | substrate 12,16. This light can be efficiently contributed to the illumination of the inspected object without being blocked by.

In addition, heat generated when the plurality of first and second light emitting elements 10 and 14 emit light, respectively, is radiated as follows. The outside air of the lighting device 2 flows into the heat dissipation space 26 between the first mounting substrate 12 and the second mounting substrate 16 from the other end of the lighting device unit 8, and the introduced air Flows through the heat dissipation space 26 and is discharged to the outside from one end of the lighting device unit 8 (see FIG. 3), and by the flow of such air, the plurality of first and second light emitting elements 10, 14. The heat from the heat can be efficiently dissipated.

In addition, as described above, the plurality of first and second light emitting elements 10 and 14 are alternately arranged side by side, thereby increasing the mounting density of the plurality of first and second light emitting elements 10 and 14. Since the thickness D2 of the illuminating device unit 8 can be reduced, the size of the entire illuminating device 2 can be reduced.

In addition, in this 1st Embodiment, although the case where only one illumination device unit 8 was formed was demonstrated, the some illumination device unit 8 mutually mutually extends in the longitudinal direction, for example according to the magnitude | size of an inspection object. In this case, as shown in FIG. 2, for example, the second lighting device unit 8b is connected to one end of the first lighting device unit 8a, and the third end is connected to the third end. The lighting device unit 8c is connected. When connected in this way, one end of the first (second) mounting substrate 12a (16a) of the first lighting device unit 8a and the first (second) mounting substrate (of the second lighting device unit 8b ( The other end of 12b (16b) is connected to each other, and the other end of the first (second) mounting substrate 12a (16a) of the first lighting device unit 8a and the third lighting device unit 8c. One end of the first (second) mounting substrate 12c (16c) is connected to each other, whereby the length of the lighting device 2 can be appropriately set. Moreover, also in the connection part of a pair of adjacent lighting apparatus units 8a, 8b (8a, 8c), the some 1st and 2nd light emitting element 10, 14 will be arrange | positioned with high mounting density, and this It is possible to prevent the illuminance of light from the plurality of first and second light emitting elements 10 and 14 disposed in the connecting portion from being lowered.

In addition, although this 1st Embodiment was comprised so that the some 1st (2nd) light emitting element 10 (14) may be attached to the single side | surface of the 1st (2nd) mounting substrate 12 (16), 1st (2nd) You may be comprised so that the some 1st (2nd) light emitting element 10 (14) may be attached to both surfaces of the mounting substrate 12 (16), respectively, and is the same also in each embodiment shown below.

Second Embodiment

Next, with reference to the schematic diagram of FIG. 5, the illuminating device of 2nd Embodiment is demonstrated. In addition, in 2nd-5th embodiment shown below, the same code | symbol is attached | subjected to the component which is substantially the same as the said 1st embodiment, and the description is abbreviate | omitted.

In 2 A of illuminating devices of 2nd Embodiment, the illuminating device unit 8 of the said 1st Embodiment is arrange | positioned in multiple numbers (7 in this embodiment) continuously in the width direction. The other surface of one of the first mounting substrates 12 of the pair of adjacent lighting device units 8 and the other surface of the second mounting substrate 16 of the other pair abut each other, so that one of the lighting device units 8 One end of the first mounting substrate 12 extends outward from the one end of the second mounting substrate 16 of the other lighting device unit 8 by a distance L2.

In addition, the plurality of lighting device units 8 are respectively fixed by a plurality of mounting members 28A (two in this embodiment). At one end of the mounting member 28A, a plurality of mounting recesses (not shown) are formed corresponding to the other ends of the first and second mounting substrates 12, 16 of the respective lighting device units 8, respectively. As in the first embodiment, the other end portions of the first and second mounting substrates 12 and 16 of the respective lighting device units 8 are inserted and mounted in the plurality of mounting recesses, respectively.

In the lighting apparatus 2A of the second embodiment, the plurality of first and second light emitting elements 10 and 14 are arranged in a plane at a high mounting density, and a plurality of each of the plurality of lighting apparatus units 8 is formed. An illuminator (not shown) is illuminated in plane by light from the first and second light emitting elements 10, 14, thereby providing an illuminating device 2A capable of illuminating the inspected object in plane with almost uniform illuminance. You can get it.

For example, the number of the lighting device units 8 connected in the width direction may be appropriately set depending on the size of the inspected object or the like, whereby the size in the width direction of the lighting device 2A can be appropriately set. In addition, as described above, for each of the plurality of lighting device units 8 connected in the width direction, the other lighting device units 8 may be connected in their longitudinal direction, thereby providing the illumination device 2A. The length in the longitudinal direction can be appropriately set.

[Third Embodiment]

Next, the lighting apparatus of 3rd Embodiment is demonstrated with reference to FIG. 6 and FIG. FIG. 6: is a perspective view which shows the lighting device which concerns on 3rd Embodiment of this invention, and FIG. 7: is schematic sectional drawing of the lighting device by the B-B line | wire in FIG.

In the lighting apparatus 2B of 3rd Embodiment, the some (3 in this embodiment) lighting apparatus units 8a-8c of 1st Embodiment are arrange | positioned, and these some lighting apparatus units 8a- 8c) is respectively fixed by the mounting member 28B of two (two in this embodiment). At one end of this mounting member 28B, a plurality of (in this embodiment) corresponding to the other end of each of the 1st and 2nd mounting boards 12a-12c, 16a-16c of each lighting device unit 8a-8c, Six mounting recesses 30Aa to 30Af are formed. In the center part at one end of the mounting member 28B, a pair of mounting recesses 30Ac and 30Ad are formed to extend substantially perpendicular to one end of the mounting member 28B, and the mounting member 28B. At one end (the other end) at one end of the pair, a pair of mounting recesses 30Aa, 30Ab (30Ae, 30Af) are provided at a predetermined angle θ (for example, with respect to one end of the mounting member 28B). , About 6 degrees). The pair of mounting recesses 30Aa, 30Ab (30Ac, 30Ad) (30Ae, 30Af) include the first and second mounting substrates 12a, 16a (of each lighting device unit 8a (8b) 8c). The other end of each of 12b, 16b (12c, 16c)) is inserted and mounted.

When it is attached in this way, the lighting device units 8a and 8c of both sides are arrange | positioned and inclined with respect to the central lighting device unit 8b by the predetermined angle (theta), and, thereby, the several lighting device units 8a-8c, The light emitting portions 18a to 18c and 20a to 20c of each of the plurality of first and second light emitting elements 10a to 10c and 14a to 14c respectively have specific regions (one end of each lighting device unit 8a to 8c). It is arranged to face the area disposed in front; (not shown). Therefore, the light from the plurality of first and second light emitting elements 10a to 10c, 14a to 14c of each of the plurality of lighting device units 8a to 8c is focused toward a specific area, whereby it is arranged in this specific area. The inspected object (not shown) can be illuminated with almost uniform illumination and also with high illumination.

In addition, in this 3rd Embodiment, although it comprised so that the three lighting apparatus units 8a-8c may be formed and arrange | positioned, it is not limited to this, For example, two may be sufficient and 4 or more may be sufficient, for example, a lighting apparatus The number can be set suitably according to the use of (2B), etc. In addition, the inclination angle θ of each of the lighting device units 8a to 8c can be appropriately set depending on, for example, the distance between the lighting device 2B and the inspection object.

Fourth Embodiment

Next, the illuminating device of 4th Embodiment is demonstrated with reference to schematic sectional drawing of FIG. In the lighting apparatus 2C of the fourth embodiment, a plurality of lighting means 32a to 32c are arranged and formed, and the mounting substrates 34a to 34c of the lighting means 32a to 32c are arranged. Through holes 36a to 36c for insertion are formed at predetermined portions of the other portions, and the other configuration of the lighting means 32a to 32c is the first (second) lighting means 4 (6) of the first embodiment. Is the same as).

Each of these lighting means 32a-32c is being fixed by the spacer member 38a-38d of several (4 in this embodiment), respectively. The spacer members 38a to 38d are formed in a block shape, for example, and one end surface of the spacer members 38a to 38d is inclined with respect to the axis by a predetermined angle θ (for example, about 6 degrees). Moreover, the other end surface is extended perpendicular to the axis. In addition, through-holes 40a to 40d extending in the axial direction from one end face to the other end face are formed in the spacer members 38a to 38d.

The some lighting means 32a-32c is arrange | positioned so that one side edge part may adjoin each other and those other edge part spaced apart from each other. One end surface of the spacer member 38a on one side of the mounting substrate 34a of the lighting means 32a formed on one side (upper side in FIG. 8) such that the insertion through hole 36a and the through hole 40a correspond to each other. Is mounted, and similarly, one end surface of the spacer member 38d is mounted on the other surface of the mounting substrate 34c of the lighting means 32c disposed on the other side (lower side in FIG. 8). In addition, the spacer member 38b is interposed between the mounting substrate 34a of the lighting means 32a disposed on one side and the mounting substrate 34b of the lighting means 32b disposed in the center, and the spacer member 38b is provided. One end surface is mounted on the other surface of the mounting substrate 34a, and the other end surface is mounted on one side of the mounting substrate 34b. Similarly, a spacer member 38c is interposed between the mounting substrate 34c of the lighting means 32c disposed on the other side and the mounting substrate 34b of the lighting means 32b disposed in the center. The bolt 42 is passed through the through holes 40a to 40d of each of the spacer members 38a to 38d mounted in this way, and the through holes 36a to 36d of the respective mounting substrates 34a to 34d. The plurality of lighting means 32a to 32c are fixed by inserting the nut 44 by screwing the nut 44 to the distal end of the bolt 42.

When the plurality of lighting means 32a to 32c are fixed in this manner, the lighting means 32a and 32c on both sides are inclined to extend by a predetermined angle θ with respect to the central lighting means 32b, and the plurality of lighting means ( 32a-32c are arrange | positioned so that the light emission part 48a-48c of each of these some light emitting elements 46a-46c may face a specific area | region (not shown). Therefore, similarly to the third embodiment, the light from the plurality of light emitting elements 46a to 46c is focused toward a specific area, thereby allowing the inspected object (not shown) disposed in this specific area to have a substantially uniform illuminance. Can illuminate with high illumination.

Moreover, similarly to the said 3rd Embodiment, you may comprise so that the some illumination means 32a-32c may be fixed by the some attachment member. In addition, the number of lighting means 32a-32c and their inclination-angle (theta) can be set suitably, respectively. For example, when the inclination angle [theta] = about 0 degrees is set, the plurality of lighting means are arranged so as to face substantially parallel to each other.

[Fifth Embodiment]

Next, the illuminating device of 5th Embodiment is demonstrated with reference to schematic sectional drawing of FIG. In the illuminating device 2D of the fifth embodiment, the illuminating device unit 8D having the first and second illuminating means 4 and 6 of the first embodiment is provided, and the first and second mounting substrates ( 12, 16. The other surface of each other opposes each other, and the some 1st light emitting element 10 and the some 2nd light emitting element 14 are alternately arrange | positioned toward the mutually opposite direction.

The lighting device unit 8D is fixed by the plurality of mounting members 28D, and at one end of the mounting member 28D, a mounting recess 30D is formed corresponding to the other end of the lighting device unit 8D. In the same manner as described above, the other end of the lighting device unit 8D is inserted into the mounting recess 30D.

Therefore, also in this 5th Embodiment, the effect similar to what was mentioned above is achieved. In addition, you may make it apply the illumination device unit 8D of this 5th embodiment instead of the illumination device units 8; 8a-8c of the said 2nd and 3rd embodiment.

[Sixth Embodiment]

Next, the illumination device of 6th Embodiment is demonstrated with reference to the perspective view of FIG. 10, and the schematic sectional drawing of FIG. The lighting device 2E of the sixth embodiment includes a plurality of lighting means 32E (five in the present embodiment) and a mounting member 28E for holding the plurality of lighting means 32E. A pair of insertion holes 36E are formed in a predetermined portion of the mounting substrate 34E, and the light emitting portions 48E of each of the plurality of light emitting elements 46E are inside the one end of the mounting substrate 34E. It is formed in the arrangement. The other structure of this lighting means 32E is substantially the same as that of the said 4th Embodiment.

The mounting member 28E is formed in a block shape, and a plurality of mounting recesses 30E into which the other ends of the plurality of mounting substrates 34E are inserted are formed at one end thereof. Each of these mounting recesses 30E is formed in a slit shape and extends substantially perpendicular to one end of the mounting member 28E. When the other end of the mounting substrate 34E is inserted into the mounting recess 30E, a gap 50 is formed between the mounting recess 30E and the other end of the mounting substrate 34E. Moreover, in this mounting member 28E, a pair of through-holes 52 are formed corresponding to a pair of insertion holes 36E formed in the mounting substrate 34E, and this through-hole 52 is It extends from one end surface to the other end surface of the mounting member 28E. The fixing screw 42E is inserted through the through hole 52 of the mounting member 28E and the insertion hole 36E of each of the plurality of mounting substrates 34E, and the tip end of the fixing screw 42E is inserted. By screwing the nut 44 to the screw, a plurality of lighting means 32E is fixed.

When it is fixed in this way, the some illumination means 32E is arrange | positioned so as to oppose substantially parallel to each other. Therefore, the mounting density of the plurality of light emitting elements 46E is increased, whereby uneven illuminance unevenness can be prevented when illuminating the inspected object (not shown), thereby illuminating the inspected object with almost uniform illuminance.

In addition, the mounting substrate 34E is made of aluminum, whereby heat from the plurality of light emitting elements 46E is transferred to the mounting substrate 34E, and heat is radiated from the mounting substrate 34E. The outside air of the lighting device 2E flows through the heat dissipation space 26 formed between the plurality of lighting means 32E and the gap 50 formed between the mounting recess 30E and the other end of the mounting substrate 34E. By the flow of such air, heat from the plurality of light emitting elements 46E can be efficiently dissipated. Alternatively, a cooling fan (not shown) may be disposed at one end of the plurality of lighting means 32E, and the wind from the cooling fan may be sent to the heat dissipation space 26 and the gap 50 to dissipate heat.

Although not shown, the plurality of lighting devices 2E may be connected to each other in the longitudinal direction thereof, whereby the plurality of light emitting elements 46E can be arranged in line. In this case, the plurality of light emitting elements 46E are also arranged at a high mounting density even in a pair of adjacent lighting device 2E connections. Alternatively, the plurality of lighting devices 2E may be arranged to be disposed continuously in the width direction, whereby the plurality of light emitting elements 46E can be arranged in a plane shape.

In addition, the mounting substrate 34E is preferably formed of a metal having high heat dissipation, such as aluminum or copper, and can thereby efficiently dissipate heat from the plurality of light emitting elements 46E.

[Seventh Embodiment]

Next, the lighting apparatus of 7th Embodiment is demonstrated with reference to schematic sectional drawing of FIG. In the illuminating device 2F of the seventh embodiment, a heat conductive sheet (not shown) is provided on the other surface of the mounting substrates 34Fa to 34Fe (that is, the surface on which the plurality of light emitting elements 46E are not mounted). The heat sink 54 formed with aluminum, copper, etc. is attached. Further, at one end of the mounting member 28F, a plurality of mounting recesses 30Fa to 30Fe in which the other end of each of the plurality of mounting substrates 34Fa to 34Fe are inserted are formed. . A mounting recess 30Fc extends almost perpendicularly to one end of the mounting member 28F at a central portion at one end of the mounting member 28F, and on both sides of the mounting recess 30Fc. The pair of mounting recesses 30Fb and 30Fd are formed to be inclined by a predetermined angle θ1 with respect to one end of the mounting member 28F, and on both sides of the pair of mounting recesses 30Fb and 30Fd, The pair of mounting recesses 30Fa and 30Fe are formed to be inclined with respect to one end of the mounting member 28F by a predetermined angle θ2 larger than the predetermined angle θ1. The mounting member 28F is made of aluminum, and a plurality of pin portions 56 are formed at the other end thereof.

When the plurality of mounting substrates 34Fa to 34Fe are inserted into and mounted in the plurality of mounting recesses 30Fa to 30Fe, respectively, the plurality of lighting means 32Fa to 32Fe are directed toward the specific region. Since the light from the plurality of light emitting elements 46E is condensed toward a specific region, it is possible to illuminate the inspected object (not shown) arranged in this specific region with a substantially uniform illuminance and a high illuminance. .

In addition, heat from the plurality of light emitting elements 46E is transmitted to the heat sink 54 through the heat conduction sheet, is radiated from the heat sink 54, and is transferred to the mounting member 28F through the heat sink 54. And heat radiation from the plurality of fin portions 56 of the mounting member 28F.

In the present embodiment, the heat dissipation plate 54 is mounted on the other surface of the mounting substrates 34Fa to 34Fe via a heat conductive sheet. However, one side of the mounting substrates 34Fa to 34Fe (that is, the plurality of light emitting elements 46E). ) May be configured to mount the heat sink 54 via the heat conductive sheet on both the surface) or the both surfaces thereof.

[Eighth Embodiment]

Next, the illuminating device of 8th Embodiment is demonstrated with reference to schematic sectional drawing of FIG. The lighting apparatus 2G of the eighth embodiment includes a housing 60 having an opening 58, a plurality of lighting means 32E disposed in the housing 60, and an opening of the housing 60. 58 is provided with the cylindrical lens 62 formed. The some lighting means 32E is comprised similarly to the said 6th Embodiment. The light from the plurality of lighting means 32E is incident on the cylindrical lens 62, is bent by the cylindrical lens 62 in a direction close to the optical axis thereof, and exits from the cylindrical lens 62. Thus, the light from the physical lens 62 is focused toward a specific area.

Although not shown, a Fresnel lens may be formed in the opening 58 of the housing 60 instead of the physical lens 62. Alternatively, the diffuser plate may be formed in the opening 58 of the housing 60. In this case, the light from the plurality of lighting means 32E is diffused by the diffuser plate, thereby viewing the inspected object (not shown). Illumination with uniform illumination

As mentioned above, although embodiment of the various lighting apparatus which concerns on this invention was described, this invention is not limited to this embodiment, A various deformation | transformation and correction are possible without deviating from the range of this invention.

1 is a perspective view showing a lighting apparatus according to a first embodiment of the present invention.

FIG. 2 is a view showing one end portion of the lighting apparatus of FIG. 1. FIG.

3 is a schematic cross-sectional view of the lighting device taken along the line A-A in FIG.

4 is a view showing a first (second) lighting means of FIG. 1.

It is a figure which shows the lighting apparatus which concerns on 2nd Embodiment of this invention.

6 is a perspective view showing a lighting apparatus according to a third embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of a lighting device taken along line B-B in FIG. 6.

8 is a schematic cross-sectional view showing a lighting apparatus according to a fourth embodiment of the present invention.

9 is a schematic cross-sectional view showing a lighting apparatus according to a fifth embodiment of the present invention.

10 is a perspective view of the lighting apparatus according to a sixth embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view of the lighting apparatus by the C-C line in FIG. 10.

12 is a schematic cross-sectional view showing a lighting apparatus according to a seventh embodiment of the present invention.

It is a schematic sectional drawing which shows the lighting apparatus which concerns on 8th Embodiment of this invention.

Explanation of the sign

2, 2A, 2B, 2C, 2D, 2E, 2F, 2G Lighting

8, 8a to 8c, 8D lighting unit

10, 10a to 10c first light emitting device

12, 12a-12c first mounting substrate

14, 14a-14c second light emitting element

16, 16a-16c second mounting substrate

18, 18a-18c light emitting part

20, 20a to 20c light emitting part

32a to 32c, 32E, 32Fa to 32Fe lighting means

34a to 34c, 34E, 34Fa to 34Fe mounting board

46a to 46c, 46E light emitting device

48a to 48c, 48E light emitting part

Claims (9)

A lighting device having a plurality of first light emitting elements, a first mounting substrate on which the plurality of first light emitting elements are mounted, a plurality of second light emitting elements, and a second mounting substrate on which the plurality of second light emitting elements are mounted. With a unit, Each of the plurality of first and second light emitting elements of the lighting device unit is constituted of a side view type chip LED having a light emitting surface that emits light in substantially parallel to the mounting surface thereof, and the plurality of first and second light emitting elements. The two light emitting elements are mounted side by side at one end portion on one side of the first and second mounting substrates, with their light emitting portions facing outwards, respectively. One side of each of the first and second mounting substrates is disposed to face each other, and the plurality of first light emitting elements and the plurality of second light emitting elements are alternately arranged side by side, The illuminating device is formed in plural, and is arranged so that the light emitting portion of each of the plurality of first and second light emitting elements faces a specific area. A lighting device having a plurality of first light emitting elements, a first mounting substrate on which the plurality of first light emitting elements are mounted, a plurality of second light emitting elements, and a second mounting substrate on which the plurality of second light emitting elements are mounted. With units, Each of the plurality of first and second light emitting elements of the lighting device unit is constituted of a side view type chip LED having a light emitting surface that emits light in substantially parallel to the mounting surface thereof, and the plurality of first and second light emitting elements. The two light emitting elements are mounted side by side at one end portion on one side of the first and second mounting substrates, with their light emitting portions facing outwards, respectively. The other surfaces of each of the first and second mounting substrates are disposed to face each other, and the plurality of first light emitting elements and the plurality of second light emitting elements are alternately disposed in directions opposite to each other. The illuminating device is formed in plural, and is arranged so that the light emitting portion of each of the plurality of first and second light emitting elements faces a specific area. delete delete delete delete delete delete The side view type chip LED which has a mounting board which consists of a heat dissipation metal, and the light emitting part which emits light substantially parallel with respect to the mounting surface of this mounting board, The said side view type chip LED is the one side in the one side of the said mounting board. At the end, a plurality of light emitting units are mounted side by side so as to face the outside of one end surface of the mounting substrate to form a line-shaped lighting means, A plurality of illuminating means on the line are formed in the thickness direction of the mounting substrate to form a heat dissipation space between adjacent illuminating means and to provide a plurality of illuminating means on the surface; And a mounting member for holding the plurality of lighting means, wherein the mounting member is provided with a plurality of mounting recesses, and each of the plurality of mounting recesses is inserted with the other end of the mounting substrate. A lighting device characterized by the above.

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